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Mathematics
Adam Zalcman's user avatar
Adam Zalcman's user avatar
Adam Zalcman's user avatar
Adam Zalcman
  • Member for 14 years, 1 month
  • Last seen more than a week ago
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Quantum Software Engineer

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12
Can covariance be negative?
Nov 12, 2021
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9
How to show a Hilbert matrix is invertible?
Nov 17, 2021
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9
Why are sine and cosine identities always true (and thus sentences) even though they have free variables?
Dec 8, 2020
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6
Conjecture: $\prod\limits_{k=0}^{n}\binom{2n}{k}$ is divisible by $\prod\limits_{k=0}^n\binom{2k}{k}$ only if $n=1,2,5$.
Dec 3, 2023
answer
5
Find all the polynomials $f$ that satisfy $f(x^2)+f(x)f(x+1)=0$.
Dec 5, 2023
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5
Matrix logarithm not in Lie algebra
Jul 3, 2020
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5
Interpreting combinatorics: how are these not the same question?
Jan 8, 2023
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5
Is $\frac{ab}{dc}<1$ if $0<a<c<d<b$ and $a+b<c+d$
Dec 19, 2020
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5
Why differentiate between continuous on $[a,b]$ and differentiable on $(a,b)$?
Feb 16, 2021
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5
Is every orthogonal matrix orthogonally diagonalizable?
Dec 14, 2020

Top network posts

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318
How can I execute `date` inside of a crontab job?
119
rsync not synchronizing .htaccess file
91
Returning value from Thread
70
What is a Lorentz boost and how to calculate it?
63
Definition of "synchronization primitive"