Prove that, if G is a bipartite graph with an odd number of vertices, then G is non-Hamiltonian

Strictly speaking, is it true that $\zeta(-1)\ne1+2+3+\cdots$?

Simple normal crossings divisor and locally monomial functions

How to find the value of an unknown exponent?

How to find the solution to this system of integer variables?

How to derive the power series solution for Associated Legendre Differential Equation

Prove the inequality $\left|\frac{m}{n}-\frac{1+\sqrt{5}}{2}\right|<\frac{1}{mn}$

A simple mathematical expression for the periodic sequence $(1, -2, -1, 2, 1, -2, -1, 2,\dots)$

Cardinality of the Set of all finite subset of $\mathbb{R}$

Why do we want complete spaces? We don't we just use closed spaces?

Does there exists a finite abelian group $G$ containing exactly $60$ elements of order $2$?

Inverse laplace transform $1/(s^2+9)^2$

Geodesics of hyperbolic plane

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