Question

Why this function appears to have a singularity at each positive integer?

score 48 · Answer 1 · 2022-07-06 13:09:32

48

Views

Why this function appears to have a singularity at each positive integer?

Published on 06 Jul 2022 - 13:09

score 44 · Answer 2 · 2026-03-23 23:12:26

44

Views

Does integration give a morphism out of the diffeological space of smooth maps?

Published on 23 Mar 2026 - 23:12

score 123 · Answer 3 · 2022-07-10 04:05:35

123

Views

Every ring homomorphism $C^\infty(M)\rightarrow \mathbb{R}$ is an $\mathbb{R}$-algebra homomorphism.

Published on 10 Jul 2022 - 4:05

score 95 · Answer 4 · 2022-07-15 09:15:06

95

Views

Formal properties of Gaussian kernel smoother?

Published on 15 Jul 2022 - 9:15

score 41 · Answer 5 · 2026-02-24 09:24:30

41

Views

The Support of Differential Forms defined by Pulling-Back on Complex Manifolds of the Same Dimension

Published on 24 Feb 2026 - 9:24

score 67 · Answer 6 · 2022-07-20 15:04:20

67

Views

$f,g \in C^\infty$ agree on a n-hood, yet are different?

Published on 20 Jul 2022 - 15:04

score 25 · Answer 7 · 2026-03-28 04:34:11

25

Views

Find four smooth $C^{\infty}$ real functions satisfying a certain property around the origin

Published on 28 Mar 2026 - 4:34

score 112 · Answer 8 · 2026-03-26 16:07:09

112

Views

Under what conditions can we push-forward the differential forms on a manifold $M$ to differential forms on a manifold $N$ by a smooth map $f$?

Published on 26 Mar 2026 - 16:07

score 131 · Answer 9 · 2022-08-05 23:47:02

131

Views

Smooth function satisfying $f^{-1}(x)=f(x+1/2)-1/2$

Published on 05 Aug 2022 - 23:47

score 208 · Answer 10 · 2022-08-10 16:29:44

208

Views

Why is it said that Laplacians "smooth solutions"?

Published on 10 Aug 2022 - 16:29

score 52 · Answer 11 · 2022-08-10 20:44:54

52

Views

Is $f: S^1 \rightarrow \Bbb{R}$ an embedding, submersion, or immersion? Defined via $f(x,y)=y$.

Published on 10 Aug 2022 - 20:44

score 348 · Answer 12 · 2022-08-17 12:10:12

348

Views

Visualizing vector fields "multiplied" by a function

Published on 17 Aug 2022 - 12:10

score 143 · Answer 13 · 2022-08-20 23:15:52

143

Views

Step in the proof of $f^{\epsilon}=\eta_{\epsilon}\ast f$ is $C^{\infty}$

Published on 20 Aug 2022 - 23:15

score 105 · Answer 14 · 2022-08-22 19:44:37

105

Views

Is there a Constant Rank Theorem for codomains with nonempty boundary?

Published on 22 Aug 2022 - 19:44

score 299 · Answer 15 · 2022-08-26 22:12:06

299

Views

Can a smooth map be extended to an open set?

Published on 26 Aug 2022 - 22:12

List Question

Why this function appears to have a singularity at each positive integer?

Does integration give a morphism out of the diffeological space of smooth maps?

Every ring homomorphism $C^\infty(M)\rightarrow \mathbb{R}$ is an $\mathbb{R}$-algebra homomorphism.

Formal properties of Gaussian kernel smoother?

The Support of Differential Forms defined by Pulling-Back on Complex Manifolds of the Same Dimension

$f,g \in C^\infty$ agree on a n-hood, yet are different?

Find four smooth $C^{\infty}$ real functions satisfying a certain property around the origin

Under what conditions can we push-forward the differential forms on a manifold $M$ to differential forms on a manifold $N$ by a smooth map $f$?

Smooth function satisfying $f^{-1}(x)=f(x+1/2)-1/2$

Why is it said that Laplacians "smooth solutions"?

Is $f: S^1 \rightarrow \Bbb{R}$ an embedding, submersion, or immersion? Defined via $f(x,y)=y$.

Visualizing vector fields "multiplied" by a function

Step in the proof of $f^{\epsilon}=\eta_{\epsilon}\ast f$ is $C^{\infty}$

Is there a Constant Rank Theorem for codomains with nonempty boundary?

Can a smooth map be extended to an open set?

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