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18 votes

basic difference between canonical isomorphism and isomorphims

group-isomorphism asked Apr 26, 2019 at 9:11
math.stackexchange.com

18 votes

Is it a reasonable way to write a research article assuming truth of a conjecture?

soft-question conjectures mathematical-writing asked Feb 13, 2021 at 4:00
mathoverflow.net

12 votes

Finding polynomial without constant term that commutes with $f(x)=x^3+3x$

abstract-algebra elementary-number-theory polynomials ring-theory asked Dec 21, 2021 at 6:41
math.stackexchange.com

9 votes

Ideal characterization of almost convergence

fa.functional-analysis gn.general-topology sequences-and-series limits-and-convergence asked Sep 2, 2019 at 11:45
mathoverflow.net

8 votes

Show that $ \mathbb{Q}_3(i)$ is an unramified extension

abstract-algebra algebraic-number-theory p-adic-number-theory asked Oct 9, 2018 at 11:50
math.stackexchange.com

7 votes

Continued fraction of $\sqrt{67} - 4$

continued-fractions asked Apr 3, 2017 at 12:54
math.stackexchange.com

6 votes

Show that $ h(x)=\max \{f(x,y) : y \in [0,1] \} $ is continuous

real-analysis continuity epsilon-delta asked Oct 5, 2017 at 7:34
math.stackexchange.com

6 votes

Which Hecke algebra is used in representation theory?

number-theory representation-theory hecke-algebras langlands-program asked Jan 10, 2021 at 15:06
math.stackexchange.com

5 votes

If J is a 101×101 matrix with all entries equal to 1 and let I denote the identity matrix of order 101. Then what is the determinant of J-I?

linear-algebra matrices determinant asked Dec 3, 2015 at 13:14
math.stackexchange.com

5 votes

Example of a manifold satisfying some Ricci curvature condition

differential-geometry riemannian-geometry asked Aug 9, 2021 at 6:57
math.stackexchange.com

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