User user134070

16 votes

4 answers

10k views

Is the determinant differentiable?

asked Apr 23, 2014 at 10:30

9 votes

5 answers

3k views

A proper definition of $i$, the imaginary unit [duplicate]

asked Aug 7, 2015 at 13:17

7 votes

2 answers

1k views

Classifying the groups of order 56

asked Jul 13, 2018 at 15:07

6 votes

1 answer

186 views

Classifying groups of order 585

asked Aug 2, 2018 at 9:59

6 votes

2 answers

633 views

Why is it legal to take the antiderivative of both sides of an equation?

asked Oct 10, 2015 at 19:19

5 votes

1 answer

4k views

composition sum of functions/sum of composition of functions

asked Sep 29, 2014 at 4:45

4 votes

2 answers

2k views

Dini or Right or upper derivative of Weierstrass function

asked Nov 6, 2014 at 5:29

4 votes

1 answer

2k views

Definition of Local Ring

asked May 2, 2015 at 0:27

4 votes

1 answer

201 views

Covering $\mathbb{R}$ by intervals centered at rationals

asked Jan 4, 2020 at 2:13

4 votes

2 answers

546 views

Galois group of $x^8+x^4+1$

asked Jul 12, 2018 at 18:49

4 votes

2 answers

120 views

What constitutes a direct proof?

asked Oct 17, 2023 at 17:58

3 votes

1 answer

73 views

constructibility[geometry] given special tools

asked Aug 18 at 16:09

3 votes

4 answers

199 views

Existence of Finite Fields

asked Jul 12, 2018 at 7:44

3 votes

2 answers

539 views

Perfect sets of a complete metric space

asked Jul 3, 2022 at 2:34

3 votes

1 answer

202 views

Galois group of the polynomial $(x^p-a)(x^q-a)$.

asked Jul 15, 2018 at 13:27

3 votes

1 answer

758 views

Universal property of natural number semi-ring

asked May 6, 2015 at 19:57

3 votes

1 answer

144 views

what does it mean that a subgroup self-normalizes?

asked Mar 21, 2016 at 10:01

3 votes

4 answers

3k views

closed ball in general metric space?

asked Mar 19, 2014 at 17:33

3 votes

2 answers

11k views

Is it true that the Fourier coefficient of convolution is the product of the coefficients?

asked Apr 17, 2014 at 2:42

2 votes

1 answer

215 views

series of functions and term by term differentiation

asked Apr 9, 2014 at 21:33

2 votes

0 answers

186 views

function over countable union, intersection, etc

asked Sep 11, 2014 at 7:32

2 votes

1 answer

529 views

Injective endomorphism on a finite field is surjective?

asked Sep 13, 2014 at 23:49

2 votes

1 answer

426 views

Proof of Egorov's theorem

asked Sep 25, 2014 at 5:20

2 votes

1 answer

121 views

$\sigma$-finiteness of measure

asked Jan 4, 2020 at 18:57

2 votes

1 answer

620 views

Finite abelian groups whose subgroups of the same order are all isomorphic

asked Aug 3, 2018 at 4:30

2 votes

3 answers

61 views

Interesting topologies on $\mathbb{R}$?

asked Dec 22, 2020 at 12:10

1 vote

1 answer

76 views

Terminability of an algorithm and existence of an infinite sequence

asked Jun 28, 2022 at 15:57

1 vote

1 answer

843 views

Fundamental group of $\mathbb{R}^3\setminus$ line+2 circles

asked Dec 5, 2018 at 1:21

1 vote

1 answer

290 views

(principal) sub matrix in the language of linear transformation

asked Nov 19, 2019 at 12:22

1 vote

1 answer

77 views

Critical values of the restriction

asked Sep 15, 2020 at 13:01

Stack Exchange Network

65 Questions

Is the determinant differentiable?

A proper definition of $i$, the imaginary unit [duplicate]

Classifying the groups of order 56

Classifying groups of order 585

Why is it legal to take the antiderivative of both sides of an equation?

composition sum of functions/sum of composition of functions

Dini or Right or upper derivative of Weierstrass function

Definition of Local Ring

Covering $\mathbb{R}$ by intervals centered at rationals

Galois group of $x^8+x^4+1$

What constitutes a direct proof?

constructibility[geometry] given special tools

Existence of Finite Fields

Perfect sets of a complete metric space

Galois group of the polynomial $(x^p-a)(x^q-a)$.

Universal property of natural number semi-ring

what does it mean that a subgroup self-normalizes?

closed ball in general metric space?

Is it true that the Fourier coefficient of convolution is the product of the coefficients?

series of functions and term by term differentiation

function over countable union, intersection, etc

Injective endomorphism on a finite field is surjective?

Proof of Egorov's theorem

$\sigma$-finiteness of measure

Finite abelian groups whose subgroups of the same order are all isomorphic

Interesting topologies on $\mathbb{R}$?

Terminability of an algorithm and existence of an infinite sequence

Fundamental group of $\mathbb{R}^3\setminus$ line+2 circles

(principal) sub matrix in the language of linear transformation

Critical values of the restriction