Question

Is there an operator that corresponds to multiplication like integration corresponds to addition?

score 51 · Answer 1 · 2018-03-28 14:05:36

51

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Is there an operator that corresponds to multiplication like integration corresponds to addition?

Published on 28 Mar 2018 - 14:05

score 159 · Answer 2 · 2026-03-29 12:11:14

159

Views

Give an example of a local homeomorphism $f:X\to Y$ and a subset $A\subset X$ such that $f|_A$ is not a local homeomorphism of $A$ onto $f(A)$.

Published on 29 Mar 2026 - 12:11

score 3.8k · Answer 3 · 2026-04-11 06:03:23

3.8k

Views

Proof of $\int_Ef\,dm=\int_Eg\,dm\implies f,\,g$ equal almost everywhere.

Published on 11 Apr 2026 - 6:03

score 107 · Answer 4 · 2026-03-27 23:28:05

107

Views

Product of convex functions with special properties

Published on 27 Mar 2026 - 23:28

score 46 · Answer 5 · 2026-03-25 07:44:49

46

Views

Under what conditions is a curve in $\mathbb{R}^2$ that assymptotes to a straight line a closed set?

Published on 25 Mar 2026 - 7:44

score 296 · Answer 6 · 2026-04-11 04:10:14

296

Views

How to show that $f$ is Riemann integrable?

Published on 11 Apr 2026 - 4:10

score 121 · Answer 7 · 2018-03-29 06:23:09

121

Views

Sequence $(\frac{a_n}{n})$ is convergent.

Published on 29 Mar 2018 - 6:23

score 45 · Answer 8 · 2026-04-11 01:53:52

45

Views

Weighted products based on purchase dates

Published on 11 Apr 2026 - 1:53

score 2k · Answer 9 · 2026-03-25 09:53:25

2k

Views

Why is the Monotone Convergence Theorem more famous than it's stronger cousin?

Published on 25 Mar 2026 - 9:53

score 37 · Answer 10 · 2026-03-27 17:53:04

37

Views

Computing the norm of the operator $T: (\Bbb R^n, \|\cdot\|_2)\to (\Bbb R^n, \|\cdot\|_1)$ with $Tx = (\delta^kx_k)_{k=1,...,n}$

Published on 27 Mar 2026 - 17:53

score 139 · Answer 11 · 2026-04-09 20:11:35

139

Views

How to find the maximum and minimum of a multivariable function?

Published on 09 Apr 2026 - 20:11

score 90 · Answer 12 · 2026-04-01 22:11:17

90

Views

dense sets and uncountable sets

Published on 01 Apr 2026 - 22:11

score 85 · Answer 13 · 2018-03-30 01:29:50

85

Views

Proving that show that $(f_n)_n$ admits a subsequence that simply converges on $\Bbb R$.

Published on 30 Mar 2018 - 1:29

score 1.6k · Answer 14 · 2018-03-30 03:36:58

1.6k

Views

Evaluate $\int_{0}^{\frac{\pi}{2}}\frac{x^2}{ \sin x}dx$

Published on 30 Mar 2018 - 3:36

score 73 · Answer 15 · 2026-03-30 03:55:44

73

Views

Can someone please verify this proof of mine relating limit points and closure of sets?

Published on 30 Mar 2026 - 3:55

List Question

Is there an operator that corresponds to multiplication like integration corresponds to addition?

Give an example of a local homeomorphism $f:X\to Y$ and a subset $A\subset X$ such that $f|_A$ is not a local homeomorphism of $A$ onto $f(A)$.

Proof of $\int_Ef\,dm=\int_Eg\,dm\implies f,\,g$ equal almost everywhere.

Product of convex functions with special properties

Under what conditions is a curve in $\mathbb{R}^2$ that assymptotes to a straight line a closed set?

How to show that $f$ is Riemann integrable?

Sequence $(\frac{a_n}{n})$ is convergent.

Weighted products based on purchase dates

Why is the Monotone Convergence Theorem more famous than it's stronger cousin?

Computing the norm of the operator $T: (\Bbb R^n, \|\cdot\|_2)\to (\Bbb R^n, \|\cdot\|_1)$ with $Tx = (\delta^kx_k)_{k=1,...,n}$

How to find the maximum and minimum of a multivariable function?

dense sets and uncountable sets

Proving that show that $(f_n)_n$ admits a subsequence that simply converges on $\Bbb R$.

Evaluate $\int_{0}^{\frac{\pi}{2}}\frac{x^2}{ \sin x}dx$

Can someone please verify this proof of mine relating limit points and closure of sets?

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