User SOUL

4 votes

1 answer

443 views

Is a Noetherian graded ring also a finitely generated $R_0$-module?

asked Jan 2, 2021 at 4:57

3 votes

1 answer

2k views

Definition of subcomplex

asked May 10, 2021 at 7:38

3 votes

1 answer

102 views

Prove that, $\mathbb{C}P^{n} \setminus \mathbb{C}P^{n-1}$ is homeomorphic to $\mathbb{C}^{n}$

asked Apr 9, 2021 at 17:54

3 votes

1 answer

338 views

Intuition for Homology group

asked Aug 4, 2021 at 14:52

2 votes

1 answer

184 views

Infinite concatenation of homotopy

asked Aug 9, 2021 at 16:53

2 votes

1 answer

129 views

Calculating the derivative of the map $T\to T^{-1}$

asked Apr 5, 2021 at 3:05

2 votes

1 answer

232 views

What is the reduced suspension of $I=[0,1]$?

asked Oct 14, 2020 at 15:58

2 votes

0 answers

36 views

Prove that, the product space $I^I$ is separable

asked Nov 22, 2020 at 15:42

2 votes

4 answers

76 views

Geometry behind $\int_{0}^{2π}\frac{e^{ix}}{e^{ix}-z}~dx=2\pi(|z|<1)$

asked May 27, 2020 at 20:29

2 votes

0 answers

77 views

a motivating proof that continuously differentiable complex function is infinitely differentiable

asked May 29, 2020 at 15:23

2 votes

1 answer

561 views

Intersection of decreasing sequence of compact connected set is connected.

asked Jun 7, 2020 at 16:48

2 votes

1 answer

298 views

Supremum and infimum of $\sum_{k=1}^{n}\frac{a_k}{a_{k}+a_{k+1}+a_{k+2}}$

asked Sep 10, 2018 at 2:20

2 votes

1 answer

40 views

Can we make a convergent series absolutely convergent under certain conditions? [closed]

asked Nov 20, 2018 at 2:41

2 votes

2 answers

162 views

If $f$ is a derivative then is $|f|$ also a derivative?

asked Jan 24, 2019 at 4:23

2 votes

0 answers

58 views

Motivation behind the definition of compact sets. [duplicate]

asked Mar 19, 2019 at 13:41

1 vote

0 answers

163 views

Proving $\pi$ is irrational without arguing by contradiction

asked May 10, 2020 at 13:24

1 vote

1 answer

612 views

If $H$ is of finite index, Prove that, there is a subgroup $N$ of $H$ and of finite index in $G$ such that $aNa^{-1}= N$ for all $a$ in $G$

asked Dec 10, 2018 at 17:28

1 vote

1 answer

63 views

Does the relation $\exp(\log T)=T(\|T-I\|<1)$ hold in a Banach space?

asked Dec 25, 2020 at 15:47

1 vote

0 answers

956 views

Torus as CW complex

asked May 7, 2021 at 5:17

1 vote

1 answer

118 views

Is the injective map $f: X^{n-1}\to X^n$ an embedding?

asked May 16, 2021 at 6:51

0 votes

1 answer

260 views

Are all compact, connected, oriented level sets homeomorphic to sphere or disk?

asked May 24, 2021 at 16:47

0 votes

0 answers

107 views

Understanding Example 0.13 Of Hatcher

asked Jun 2, 2021 at 1:56

0 votes

1 answer

135 views

Higher derivatives of multilinear map

asked Jan 21, 2021 at 7:07

0 votes

1 answer

858 views

Does every continuous random variable have a pdf?

asked Jul 17, 2020 at 18:53

0 votes

1 answer

315 views

Understanding wedge sum

asked Oct 13, 2020 at 11:48

0 votes

1 answer

44 views

Is $C(A)+C(B)=C(A+B)$, if $C(A)\cap C(B)= \{0\}\,$?

asked Jan 16, 2019 at 16:14

0 votes

1 answer

52 views

Integral $\int {\left(b\left(\frac{1}{x}-\frac{1}{a}\right)+\frac{c}{2}\left(\frac{1}{a^2}-\frac{1}{x^2}\right)\right)}^{-\frac{1}{2}} dx$

asked Aug 25, 2018 at 7:47

0 votes

1 answer

27 views

Differentiation in Higher Dimension

asked Apr 26, 2020 at 15:55

-1 votes

5 answers

147 views

Is sum of the reciprocal of any subsequence of natural number divergent?

asked Dec 6, 2018 at 5:31

Stack Exchange Network

29 Questions

Is a Noetherian graded ring also a finitely generated $R_0$-module?

Definition of subcomplex

Prove that, $\mathbb{C}P^{n} \setminus \mathbb{C}P^{n-1}$ is homeomorphic to $\mathbb{C}^{n}$

Intuition for Homology group

Infinite concatenation of homotopy

Calculating the derivative of the map $T\to T^{-1}$

What is the reduced suspension of $I=[0,1]$?

Prove that, the product space $I^I$ is separable

Geometry behind $\int_{0}^{2π}\frac{e^{ix}}{e^{ix}-z}~dx=2\pi(|z|<1)$

a motivating proof that continuously differentiable complex function is infinitely differentiable

Intersection of decreasing sequence of compact connected set is connected.

Supremum and infimum of $\sum_{k=1}^{n}\frac{a_k}{a_{k}+a_{k+1}+a_{k+2}}$

Can we make a convergent series absolutely convergent under certain conditions? [closed]

If $f$ is a derivative then is $|f|$ also a derivative?

Motivation behind the definition of compact sets. [duplicate]

Proving $\pi$ is irrational without arguing by contradiction

If $H$ is of finite index, Prove that, there is a subgroup $N$ of $H$ and of finite index in $G$ such that $aNa^{-1}= N$ for all $a$ in $G$

Does the relation $\exp(\log T)=T(\|T-I\|<1)$ hold in a Banach space?

Torus as CW complex

Is the injective map $f: X^{n-1}\to X^n$ an embedding?

Are all compact, connected, oriented level sets homeomorphic to sphere or disk?

Understanding Example 0.13 Of Hatcher

Higher derivatives of multilinear map

Does every continuous random variable have a pdf?

Understanding wedge sum

Is $C(A)+C(B)=C(A+B)$, if $C(A)\cap C(B)= \{0\}\,$?

Integral $\int {\left(b\left(\frac{1}{x}-\frac{1}{a}\right)+\frac{c}{2}\left(\frac{1}{a^2}-\frac{1}{x^2}\right)\right)}^{-\frac{1}{2}} dx$

Differentiation in Higher Dimension

Is sum of the reciprocal of any subsequence of natural number divergent?