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| location | ||
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| visits | member for | 2 years, 9 months |
| seen | 5 hours ago | |
| stats | profile views | 2,224 |
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1d |
awarded | matrices |
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1d |
awarded | Enlightened |
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1d |
awarded | Nice Answer |
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1d |
awarded | Nice Answer |
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1d |
answered | sum of ten squares |
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1d |
revised |
sum of ten squares added 17 characters in body |
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1d |
comment |
sum of ten squares @rahul, it is methodical, as hinted to in the last paragraph. |
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1d |
revised |
sum of ten squares added 221 characters in body |
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1d |
comment |
sum of ten squares @GerryMyerson, sorry, no. But the OP did say "If not the whole solution". |
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1d |
answered | sum of ten squares |
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2d |
accepted | Which finite groups are the group of units of some ring? |
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2d |
comment |
Given $G$, when can we find a division ring $R$ with $R^*=G$? See math.stackexchange.com/questions/384422/…. |
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2d |
comment |
What would be the immediate implications of a formula for prime numbers? There is a polynomial-time algorithm for deciding the primality of every number. See en.wikipedia.org/wiki/AKS_primality_test. |
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2d |
comment |
question on subgroups of prime order You could try using a better title. |
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2d |
comment |
$g \colon [0,1] \to [0,1]$ be a continuous map and consider the iteration $x_{n+1}=g(x_n)$. The question is not about the existence of a fixed point, which as you say is obvious, but whether the iteration of $g$ gets to it, I guess from any starting point. Perhaps you mean Banach's fixed-point theorem. |
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2d |
comment |
What is $\frac{(an)!}{n!}$? This argument is only correct if you assume that "in terms of" means "multiplicatively". In principle, there might be an expression involving addition and then other primes might show up. |
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2d |
comment |
A strange characterisation of cyclic groups This is usually part of the proof that any finite subgroup of the multiplicative group of a field is cyclic, but it stands on its own, though you may argue it's not too natural. See math.stackexchange.com/a/59911/589. |
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2d |
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Solving a congruence equation Using $\pi$ here is confusing. |
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May 14 |
comment |
Terminology for an element of a partition? Your definition of partition is the standard one: en.wikipedia.org/wiki/Partition_of_a_set. |
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May 14 |
comment |
“The whole is greater than the sum of its parts” as a mathematical expression In the context of measure theory, if you have a countable collection of pairwise disjoint parts that cover the whole, then the whole is exactly equal to the sum of its parts. |
