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25 votes

Math books for advanced high school students

soft-question big-list teaching textbook-recommendation asked Nov 5, 2014 at 8:18
mathoverflow.net

19 votes

Is it possible that both a graph and its complement have small connectivity?

co.combinatorics graph-theory discrete-geometry asked Oct 2, 2018 at 8:33
mathoverflow.net

15 votes

Is this lower bound for a norm of some complex matrices true?

matrices cv.complex-variables matrix-analysis global-optimization asked Jun 9, 2018 at 15:37
mathoverflow.net

14 votes

An inequality on some pairs of orthogonal vectors

matrices inequalities asked Sep 28, 2020 at 6:30
mathoverflow.net

11 votes

Convex hull of the Stiefel manifold with non-negativity constraints

matrices convex-geometry convex-optimization convexity convex-hulls asked Apr 3, 2018 at 15:24
mathoverflow.net

10 votes

Asymptotic behavior of an integral depending on an integer

real-analysis ca.classical-analysis-and-odes integration asymptotics asked Jun 22, 2018 at 14:57
mathoverflow.net

9 votes

Linear transformation of a polyhedron

discrete-geometry convex-polytopes convex-geometry asked Jun 28, 2014 at 15:25
mathoverflow.net

8 votes

Distance from nonnegativity of some orthonormal vectors

linear-algebra matrices inequalities nonnegative-matrices asked Apr 15, 2018 at 8:28
mathoverflow.net

6 votes

An Optimization Problem with Complex Variables, regarding Eigenvalues of Circulant Matrices

matrices cv.complex-variables polynomials analytic-number-theory circulant-matrices asked Jun 16, 2018 at 21:06
mathoverflow.net

5 votes

The number of facets of a polyhedron under linear transformation

discrete-geometry convex-polytopes convex-geometry asked Jul 1, 2014 at 6:38
mathoverflow.net

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