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Toni Mhax

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4 Sort of positive matrix Jul 14 '19
4 If $x,y,z>0$ and $x+y+z=1$ then $\frac{xyz}{(1-x)(1-y)(1-z)}\le\frac{1}{8}$ Nov 1 '18
4 A symmetric, diagonally dominant matrix A with real positive diagonal entries is positive definite Nov 15 '19
4 On the imaginary and real part of the eigenvalues of a real normal matrix. Sep 15 '20
3 If $a^2+b^2+c^2 =3$, find the minimum value of $a+b+c$ Mar 17 '20
2 $\omega(A_{\beta})\geq \frac{1}{2}$ for all $\beta$ and $\|A_{\beta_0}\|<1$ for some $\beta_0$ Mar 17 '20
2 Prove that all the eigenvalues of $A$ are real.(Gershgorin 's Theorem) Dec 2 '19
2 Positive matrices are diagonalizable in $\mathbb C$? Sep 27 '18
2 On the greatest integer that cannot be expressed as $c_{1}a_{1}+c_{2}a_{2}$ Jul 11 '19
2 Product of positive definite and negative definite commuting matrices Jul 16 '19
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