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 Jan19 asked Prove that if complete graph K_n is edge-colored with n colors, there exists a cycle with each edge different color Jul17 asked Inequality: $2\sqrt{xz}+2\sqrt{yz}+2\sqrt{xy}\geq 3x+3y+3z-3$ Jun27 answered What do I not understand about one-to-one functions? Jun27 asked Ways to study mathematics while commuting Jun25 asked If $4k^3+6k^2+3k+l+1$ and $4l^3+6l^2+3l+k+1$ are powers of two, how to conclude $k=1, l=2$ Jun23 asked When is $(a^2+b)(b^2+a)$ a power of $2$? Jan25 asked Maximum number of different diagonals obtained by column permutations May1 asked Definable with parameters (Example) Apr27 asked (Logic) Formally writing a rational number in logic Apr26 asked Gödel's Paradox — Every set of formulas is consistent Apr25 asked How to show that the property of being algebraically closed is reflected by elementary extensions? Apr24 answered Logic question linking $\omega$-categoricalness to completeness Apr24 asked How to show that a theory T union a sentence $\varphi$ is consistent. Apr24 asked Difference between elementary submodel and elementary substructure Apr22 asked Logic automorphism question about $(\mathbb{R},0,1,+,\cdot,<)$. Apr22 asked Logic question linking $\omega$-categoricalness to completeness Apr20 asked Prove that two structures are elementarily equivalent (Logic) Apr6 asked Logic: Maximally consistent and validity Apr6 asked Logic: Equivalence Relation Feb27 asked Predicate vs function