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Eugene Zhang's user avatar
Eugene Zhang's user avatar
Eugene Zhang
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55
Frobenius norm of product of matrix
Aug 11, 2015
50
How to prove limit of measurable functions is measurable
Jun 16, 2015
40
A ring in which the two operations are equal is {0}
Nov 1, 2016
26
How to integrate $\int_0^{\infty} \frac{e^{ax} - e^{bx}}{(1 + e^{ax})(1+ e^{bx})}dx$ where $a,b > 0$.
Jul 12, 2015
14
Eigenvalues of $A^TA$
May 10, 2015
13
Suppose $a_n>0$ and $\sum_{n=1}^{\infty}{a_n}$ diverges. Determine convergence of $\sum_{n=1}^{\infty}{\frac{a_n}{s_n^2}}$, where $s_n=\sum^n a_n$.
May 24, 2015
12
How to prove that algebraic numbers form a field? [duplicate]
May 11, 2015
11
Proving the inequality $|e^z-1|\leq e^{|z|}-1$
Oct 19, 2015
10
Proof that $\partial(A\times B) = ((\partial A)\times B)\cup (A\times(\partial B))$
Apr 11, 2016
10
Prove that a regular Lindelöf topological space is normal
Nov 23, 2016
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23
Error in converting a PDF to a PNG in ImageMagick
22
How do teaching buy outs work?
17
Intuition behind stability and instability in model theory
13
Who are the top mathematicians who were ignored due to their unconventional approach?
10
Examples of $\aleph_0$-categorical nonhomogeneous structures