Do constant functions have absolute or local max/mins?

De Morgan laws of linear logic

Evaluating $\lim_{n \to +\infty}\frac{1}{n}\left({\frac{n}{n+1} + \frac{n}{n+2} + \cdots + \frac{n}{2n}}\right)$

Why are projective spaces and varieties preferable?

Different definitions for semisimple Lie group

Prove with induction that $11$ divides $10^{2n}-1$ for all natural numbers.

Why is an infinite dimensional space so different than a finite dimensional one?

Number of choices of signs: $\pm 1 \pm 2 \pm ... \pm n=0$

How to apply triangle inequality in a probability statement?

Are all series with analytic continuation to a point resulting in Grandi's series equal to 1/2 at that point?

Can a symmetric matrix become non-symmetric by changing the basis?

Distribution theory and differential equations.

Prove that: $\sqrt[3]{a_1^3+ a_2^3 +\cdots+a_n^3} \le \sqrt{a_1^2 + a_2^2 +\cdots+a_n^2}$

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