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grayQuant
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University student studying math and economics.

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25
Is Lewis Carroll's reasoning correct?
Mar 17, 2014
11
What are the prerequisites for taking introductory abstract algebra? [closed]
Dec 13, 2012
6
If there is a bijection $f: X\rightarrow Y$, prove that there exists an isomorphism $\phi :S_X\rightarrow S_Y$
Feb 20, 2015
6
Infinite intersection of compact, path connected, nested sets is path connected?
Mar 4, 2016
5
Proving that $ f: [a,b] \to \Bbb{R} $ is Riemann-integrable using an $ \epsilon $-$ \delta $ definition.
Apr 28, 2015
5
For which fields is $\left\{\begin{pmatrix} a & -b \\ b & a \end{pmatrix} \,\middle |\, a, b \in F\right\} \subset M_2(F)$ a field?
Sep 10, 2015
5
What is the cardinality of the set of all infinite sequences?
Mar 11, 2014
5
Necessary and sufficient conditions for an abelian group to be a vector space over $\mathbb{Q}$
Nov 29, 2015
5
Find all Pythagorean triples $a<b<c$, where $c=65$.
Feb 16, 2014
5
How to compute the center of $SU(2)$?
Mar 7, 2016
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What is the policy on archiving old questions?
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42
Why did Greeks and Romans dilute their wine?
19
Storing food without refrigerator during the winter
13
Song school vs. Han school of Confucian thought in the Qing dynasty
10
What was the social status of a man who failed the civil service exams in Imperial China ( 1200 - 1800 AD )?
10
How can we explain the decline of Buddhism in India around the 12th century?