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Nick R's user avatar
Nick R's user avatar
Nick R's user avatar
Nick R
  • Member for 9 years, 3 months
  • Last seen more than 5 years ago
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6
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Top posts
question
66
Is $\mathbb{R}^3 \setminus \mathbb{Q}^3$ simply connected?
Aug 29, 2015
question
14
Inequalities on elementary symmetric polynomials
Nov 2, 2017
question
8
Combinatorial identity with connection coefficients and falling factorial $\langle i x\rangle_n$
Dec 2, 2016
question
7
Measure of chords from a cantor set
Oct 5, 2015
question
7
Positive Semidefinite Polynomial with Bounded Degree in each Variable
Aug 24, 2016
question
4
Principal Minors of the Resultant
Sep 13, 2016
answer
1
Maximizing trace of $\mathrm V^T \mathrm A \mathrm V$ for $\mathrm A$ symmetric (alternate proof with min/max-theorem)
Aug 24, 2016
answer
1
A linear/Lie algebra problem
Aug 25, 2016
Top network posts
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9
Show that orthogonal matrices are diagonalizable
7
Irrationality of $\sqrt{24}$
6
Show that $\text{dim}(U) + \text{dim}(W) = \text{dim}(U + W) + \text{dim}(U \cap W)$
5
Find all linear transformations of $\mathbb{R}^3$ that preserve the hyperboloid $x^2+y^2− z^2 = 1$