<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
    <url>
        <loc>https://mathsclub.org/</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/about</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/privacy</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/problems</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/3-manifolds</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/4-manifolds</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/abc</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/additive-combinatorics</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/additive-number-theory</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/affine-geometry</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/algebraic-complexity</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/algebraic-cycles</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/algebraic-geometry</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/algebraic-topology</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/amenability</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/arithmetic-dynamics</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/arithmetic-geometry</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/automated-reasoning</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/average-case-complexity</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/blow-up</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/chromatic-number</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/coding-theory</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/combinatorial-games</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/communication-complexity</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/complexity-theory</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/computability</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/computational-number-theory</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/convex-geometry</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/convex-integration</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/cubic-graphs</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/curvature</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/decidability</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/descriptive-set-theory</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/differential-topology</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/diophantine-approximation</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/diophantine-equations</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/discrepancy-theory</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/discrete-geometry</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/distributed-computing</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/divisor-function</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/dynamical-systems</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/edge-colouring</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/egyptian-fractions</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/elementary</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/elliptic-curves</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/ergodic-theory</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/exponential-diophantine</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/extremal-combinatorics</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/fluid-dynamics</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/formalization</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/free-groups</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/geometric-group-theory</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/graph-labellings</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/graph-minors</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/graph-theory</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/group-rings</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/group-theory</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/harmonic-analysis</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/homogeneous-dynamics</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/hyperbolic-geometry</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/hypergraphs</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/independence</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/index-theory</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/jordan-curves</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/knot-theory</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/l-functions</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/lie-theory</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/mathematical-logic</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/mathematical-physics</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/mersenne-primes</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/millennium-prize</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/modular-forms</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/multiplicative-functions</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/noncommutative-algebra</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/online-algorithms</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/operator-algebras</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/operator-theory</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/pdes</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/perfect-graphs</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/polynomials</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/prime-distribution</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/prime-gaps</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/prime-numbers</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/prime-patterns</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/probabilistic-models</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/quantum-chaos</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/quantum-field-theory</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/quantum-topology</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/ramsey-numbers</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/ramsey-theory</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/regularity</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/sieve-theory</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/spectral-geometry</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/sphere-packings</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/transcendence</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/turbulence</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/universal-algebra</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/vertex-colouring</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/tags/zeta-functions</loc>
            </url>
    <url>
        <loc>https://mathsclub.org/problems/the-strong-perfect-graph-theorem</loc>
        <lastmod>2026-09-10</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-petersen-colouring-conjecture</loc>
        <lastmod>2026-09-10</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-total-colouring-conjecture</loc>
        <lastmod>2026-09-10</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-goldberg-seymour-conjecture</loc>
        <lastmod>2026-09-10</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/firoozbakht-s-conjecture</loc>
        <lastmod>2026-09-10</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-hanna-neumann-conjecture</loc>
        <lastmod>2026-09-10</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/kaplansky-s-unit-conjecture</loc>
        <lastmod>2026-09-10</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-novikov-conjecture</loc>
        <lastmod>2026-09-10</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/cannon-s-conjecture</loc>
        <lastmod>2026-09-10</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-volume-conjecture</loc>
        <lastmod>2026-09-10</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/finite-time-blow-up-for-incompressible-porous-media</loc>
        <lastmod>2026-09-09</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/finite-time-blow-up-for-the-boussinesq-system</loc>
        <lastmod>2026-09-09</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-riesel-problem</loc>
        <lastmod>2026-09-08</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-ramanujan-nagell-equation</loc>
        <lastmod>2026-09-08</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/catalan-s-conjecture-mihailescu-s-theorem</loc>
        <lastmod>2026-09-08</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/gilbreath-s-conjecture</loc>
        <lastmod>2026-09-08</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/szpiro-s-conjecture</loc>
        <lastmod>2026-09-08</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-robbins-conjecture</loc>
        <lastmod>2026-09-07</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-erdos-faber-lovasz-conjecture</loc>
        <lastmod>2026-09-07</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-polynomial-freiman-ruzsa-conjecture</loc>
        <lastmod>2026-09-07</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/amenability-of-thompson-s-group-f</loc>
        <lastmod>2026-09-07</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/quantum-unique-ergodicity</loc>
        <lastmod>2026-09-07</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-log-rank-conjecture</loc>
        <lastmod>2026-09-07</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/finite-time-blow-up-for-smooth-3d-euler</loc>
        <lastmod>2026-09-06</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/onsager-s-conjecture</loc>
        <lastmod>2026-09-06</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/residual-finiteness-of-hyperbolic-groups</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-komlos-conjecture</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-sierpinski-number-problem</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-1-2-3-conjecture</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/valiant-s-hypothesis</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/pillai-s-conjecture</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/whitehead-s-asphericity-conjecture</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/falconer-s-distance-conjecture</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/suslin-s-problem</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-berman-hartmanis-conjecture</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/hilberts-tenth-problem-over-q</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/heilbronn-s-triangle-problem</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/mahler-s-volume-conjecture</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-mds-conjecture</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-congruent-number-problem</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-chomp-first-move-problem</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/is-the-mandelbrot-set-decidable</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/van-der-waerden-numbers-exact-values</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-casas-alvero-conjecture</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-hilbert-smith-conjecture</loc>
        <lastmod>2026-09-04</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-erdos-ulam-problem</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-planted-clique-conjecture</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-jacobian-conjecture</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/does-bpp-p</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-morton-silverman-conjecture</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-stark-conjectures</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-randomized-k-server-conjecture</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/borel-s-conjecture</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-antimagic-graph-conjecture</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-free-group-factors-isomorphism-problem</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/hopf-s-curvature-conjecture</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/dixmier-s-conjecture</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/sarnak-s-mobius-disjointness-conjecture</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-tammes-problem</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/dickson-s-conjecture</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-kissing-number-problem</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/schinzel-s-hypothesis-h</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/oppermann-s-conjecture</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/andrica-s-conjecture</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/legendre-s-conjecture</loc>
        <lastmod>2026-09-03</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-existence-of-large-sets-of-disjoint-matrices</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-chromatic-number-of-the-plane-for-higher-dimensions</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-existence-of-infinitely-many-fermat-primes</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-erdos-szekeres-convex-polygon-problem-exact-values</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-existence-of-perfect-lee-codes</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-baum-connes-conjecture-with-coefficients</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-existence-of-odd-order-finite-projective-planes-of-non-prime-power-order</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-critical-percolation-exponents-in-dimensions-three-and-higher</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-self-avoiding-walk-connective-constant</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/gauss-s-class-number-one-problem</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/morley-s-trisector-theorem</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-gelfond-schneider-theorem</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-green-tao-theorem</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-prime-number-theorem</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-fermat-catalan-conjecture</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-happy-ending-problem</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-andrews-curtis-conjecture</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/vaught-s-conjecture</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-slice-ribbon-conjecture</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-kesten-harris-percolation-threshold</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-dvoretzky-theorem-low-dimensional-sections-of-high-dimensional-balls</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-classification-of-finite-simple-groups</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-riemann-hypothesis-for-function-fields-over-arbitrary-base</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-erdos-selfridge-supersingularity-problem</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-continuum-hypothesis-for-higher-cardinals-gch</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-inscribed-affine-regular-hexagon-problem</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-hadwiger-debrunner-p-q-problem</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-lonely-runner-spectrum</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-erdos-graham-conjecture</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-collatz-conjecture-for-negative-integers</loc>
        <lastmod>2026-08-24</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/lehmer-s-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/furstenberg-s-conjecture-on-x2-and-x3-invariant-sets</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-mertens-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/mordell-s-conjecture-faltings-theorem</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/hilbert-s-fifth-problem</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/whitehead-s-problem</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-modularity-theorem</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/x-versus-li-x-the-first-sign-change-skewes-number</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/brocard-s-problem</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-erdos-moser-equation</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-k-server-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/danzer-s-problem</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/furstenberg-s-x2x3-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/apery-s-theorem-3-is-irrational</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/fuglede-s-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-density-hales-jewett-theorem-polymath-one</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/conway-s-angel-problem</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-word-problem-for-groups</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-burnside-problems</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-willmore-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-kadison-singer-problem</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-weil-conjectures</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/singmaster-s-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-perfect-cuboid-problem</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-unique-games-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-sunflower-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-graceful-tree-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/lebesgue-s-universal-covering-problem</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/moser-s-worm-problem</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/transcendence-of-euler-s-constant</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/hilbert-s-twelfth-problem-kronecker-s-jugendtraum</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-tate-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/the-elliott-halberstam-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/chowla-s-conjecture-on-liouville-correlations</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/hilbert-s-sixteenth-problem-part-ii</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/einstein-aperiodic-monotile</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/hedetniemis-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/borsuks-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/sphere-packing-dimensions-eight-and-twenty-four</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/lindelof-hypothesis</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/sendovs-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/conways-thrackle-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/mersenne-primes-infinitude</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/cramers-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/erdos-distinct-distances-problem</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/jacobian-conjecture-two-variables</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/reconstruction-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/hadwigers-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/beals-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/odd-perfect-numbers</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/schanuels-conjecture</loc>
        <lastmod>2026-08-23</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/unsolvability-of-the-quintic</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/three-classical-construction-problems</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/hilberts-tenth-problem</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/continuum-hypothesis</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/erdos-discrepancy-problem</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/schur-number-five</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/kellers-conjecture</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/boolean-pythagorean-triples-problem</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/convex-pentagon-tilings</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/fifth-busy-beaver-number</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/moving-sofa-problem</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/smooth-poincare-conjecture-in-dimension-four</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/ramsey-number-r55</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/union-closed-sets-conjecture</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/matrix-multiplication-exponent</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/cap-set-problem</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/erdos-straus-conjecture</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/inscribed-square-problem</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/hadwiger-nelson-problem</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/lonely-runner-conjecture</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/abc-conjecture</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/invariant-subspace-problem</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/kakeya-conjecture</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/weak-goldbach-conjecture</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/kepler-conjecture</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/poincare-conjecture</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/four-color-theorem</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/fermats-last-theorem</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/erdos-problem-728</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/erdos-multicolor-ramsey-triangles</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/connes-rigidity-conjecture</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/non-sofic-groups</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/feige-anticoncentration-conjecture</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/sum-product-over-the-reals</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/cycle-double-cover-conjecture</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/jacobian-conjecture-three-variables</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/erdos-unit-distance-problem</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/yang-mills-existence-and-mass-gap</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/hodge-conjecture</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/birch-and-swinnerton-dyer-conjecture</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/navier-stokes-existence-and-smoothness</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/twin-prime-conjecture</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/goldbach-conjecture</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/collatz-conjecture</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/p-versus-np</loc>
        <lastmod>2026-08-22</lastmod>    </url>
    <url>
        <loc>https://mathsclub.org/problems/riemann-hypothesis</loc>
        <lastmod>2026-08-22</lastmod>    </url>
</urlset>
