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Top Questions
31
votes
Need verification - Prove a Hermitian matrix $(\textbf{A}^\ast = \textbf{A})$ has only real eigenvalues
homework
linear-algebra
proof-verification
asked Aug 8, 2013 at 17:37
math.stackexchange.com
19
votes
Strictly diagonally dominant matrices are non singular
linear-algebra
matrices
asked Jul 31, 2013 at 20:40
math.stackexchange.com
18
votes
What is the difference between linear transformation and linear operator?
linear-algebra
operator-theory
linear-transformations
asked Sep 9, 2013 at 0:49
math.stackexchange.com
9
votes
$\sqrt{2\sqrt{2\sqrt{2\cdots}}}=2$
homework
calculus
asked Dec 10, 2013 at 7:14
math.stackexchange.com
5
votes
Need proofread for deriving quadratic equation formula
homework
algebra-precalculus
asked Aug 7, 2013 at 8:36
math.stackexchange.com
5
votes
If the determinant and the trace of a matrix are the same, then can we show they have the same eigenvalues?
homework
linear-algebra
matrices
asked Aug 10, 2013 at 22:06
math.stackexchange.com
5
votes
A better proof for $\det(P) = \pm1$ if $P$ is an orthogonal matrix
linear-algebra
matrices
determinant
asked Oct 11, 2013 at 3:15
math.stackexchange.com
5
votes
Is Complex Numbers the biggest field? If yes, is there any easy proof to understand it?
abstract-algebra
complex-numbers
field-theory
extension-field
asked Nov 22, 2013 at 19:37
math.stackexchange.com
Top Answers
12
How to rotate a N x N matrix by 90 degrees?
stackoverflow.com
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