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Mathematics
Nathan Portland's user avatar
Nathan Portland's user avatar
Nathan Portland's user avatar
Nathan Portland
  • Member for 11 years, 8 months
  • Last seen more than a week ago
Profile Activity
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1,973
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80k
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14
answers
23
questions
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21
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68
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11
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30
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65
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6
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16
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28
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9
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24
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26
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8
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22
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8
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4
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11
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Top posts
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All Questions Answers
Score Newest
answer
58
Do matrices $ AB $ and $ BA $ have the same minimal and characteristic polynomials?
Feb 22, 2013
question
20
$A_6 \simeq \mathrm{PSL}_2(\mathbb{F}_9) $ only simple group of order 360
Sep 19, 2011
answer
20
Order of product of two elements in an abelian group
Oct 10, 2011
question
12
Embeddings of finite groups into $\mathrm{GL}_n(\mathbb{Z})$
Oct 8, 2011
question
11
Eigenvalues of doubly stochastic matrices
Nov 9, 2011
question
10
$\mathcal{O}(n,\mathbb R)$ spans $\mathcal{M}(n,\mathbb R)$
Oct 25, 2011
question
10
Algebraically closed field with characteristics $0$ versus $\mathbb{C}$
Feb 16, 2012
question
8
Number of factors of $2^{p_1\cdots p_n}+1$
Nov 1, 2019
question
7
Matrix restoring (modulo n)
Jul 14, 2014
question
6
Generalization to higher dimension of $e^r \not \in \mathbb Q$
Jan 31, 2017
Top network posts
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25
Non-isomorphic finite simple groups
23
EGZ theorem (Erdős-Ginzburg-Ziv)
17
Textbook for Etale Cohomology
14
The maximum order of finite subgroups in $GL(n,Q)$
13
Cyclic Sylow $p$-subgroup in finite simple groups

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