Mathematics
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Mark
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View all questions and answers
All Questions Answers
Score Newest
answer
28
How can I prove this statement about subsets?
Sep 26, 2018
answer
23
Does swapping columns of a matrix cause the rows of the inverse matrix to be swapped?
Sep 29, 2018
answer
19
Does the Cayley–Hamilton theorem work in the opposite direction?
Feb 5, 2019
answer
13
Misunderstanding of Sylow theory
Apr 19, 2019
answer
11
Is this proof of $H\le G, [G:H] =2 \implies a^2\in H \forall a\in G$ correct?
Apr 16, 2019
answer
11
Can the sum of a differentiable and a non differentiable function be differentiable?
May 5, 2019
answer
10
How many numbers are there which only contain digits $4$ and $7$ in them?
Oct 5, 2018
answer
10
Is there a finite abelian group which is not isomorphic to either the additive or multiplicative group of a field?
Jul 4
answer
10
Every group with order prime power $p^n$ then it has subgroup of order $p^k$ for $0\leq k \leq n$
Sep 30, 2018
answer
9
How can I find the residue of this removable singularity?
Sep 18, 2018

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