Mathematics
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daw
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Score Newest
question
25
Inner product on $C(\mathbb R)$
May 30, 2014
answer
25
Is every Hilbert space separable?
Sep 28, 2017
answer
20
Orthogonal Projection of $ z $ onto the Affine set $ \left\{ x \mid A x = b \right\} $
Jun 10, 2015
answer
17
Is KKT conditions necessary and sufficient for any convex problems?
Nov 10, 2017
answer
14
Ensuring that a symmetric matrix with nonnegative elements is positive semidefinite
May 7, 2015
answer
13
How to show that $A^2=AB+BA$ implies $\det(AB-BA)=0$ for $3\times3$ matrices?
Jan 26, 2015
answer
12
Union of closed convex sets
May 17, 2021
answer
12
Using the Bolzano's theorem to prove that exists only one solution in the interval.
Jun 16, 2014
answer
12
Proof of Linear independence of generalized eigenvectors without applying generalized eigenspace decomposition.
Nov 27, 2014
answer
11
Eigenvectors and eigenvalues from $X^TX$ to $XX^T$?
Apr 23, 2015
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Prime number snake (2)
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Knights and knaves not on an island
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Knights attacking exactly three knights
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The Twelve Apostles
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Queens attacking exactly four queens

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