User user26857 - MathOverflow Meta

user26857

Member for 11 years, 4 months
Last seen more than 3 years ago

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Apr 25, 2020

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Feb 3, 2016
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Aug 17, 2014
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Jan 26, 2016

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59

Is Pythagoras the only relation to hold between $\cos$ and $\sin$?

32

Is quotient of a ring by a power of a maximal ideal local?

21

The number of ring homomorphisms from $\mathbb{Z}_m$ to $\mathbb{Z}_n$

21

Integral domain with a finitely generated non-zero injective module is a field

20

Let $n$ be an integer greater than $1$. In a ring in which $x^n = x$ for all $x$, show that $ab=0$ implies $ba = 0$.