List questions from smooth-functions

Published on 18 Mar 2019 - 21:46

129

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Smooth functions with equal derivatiesof all orders in one point

Published on 25 Mar 2019 - 17:38

201

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Perimeter of level sets of a smooth function

Published on 25 Mar 2026 - 12:40

85

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Transformation between two measures

Published on 07 Apr 2019 - 14:01

419

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Is the Cartesian product of $C^\infty$ functions a $C^\infty$ function?

Published on 08 Apr 2019 - 5:23

66

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If a real multi-variable function is analytic along all analytic curves passing through $0$, is it real-analytic?

Published on 25 Mar 2026 - 4:57

113

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Differential and manifold, concrete example of a calculation

Published on 12 Apr 2019 - 12:31

524

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Determining the linear independence of tangent vectors at a point on the manifold

Published on 25 Mar 2026 - 3:03

122

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Smooth approximation of $f(x)=\begin{cases}0&\text{if}\;x<0\\x&\text{if}\;x \geq 0 \end{cases}$

Published on 20 Apr 2019 - 2:58

73

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Prove the set of linear continuous inversible operators is open

Published on 30 Apr 2019 - 18:06

950

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The identity theorem at the boundary (complex analysis)

Published on 26 Mar 2026 - 4:49

1.5k

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Smooth images of manifolds are immersed?

Published on 25 Mar 2026 - 6:04

938

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How can I create a cubic spline to connect these two line segments?

Published on 25 Mar 2026 - 4:57

645

Views

Examples of smooth functions 1

Published on 13 May 2019 - 11:10

159

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Chain rule and smooth functions

Published on 26 Mar 2026 - 4:50

List Question

Smooth, approximately space-filling curves in high dimensions

Smooth functions with equal derivatiesof all orders in one point

Perimeter of level sets of a smooth function

Transformation between two measures

Is the Cartesian product of $C^\infty$ functions a $C^\infty$ function?

If a real multi-variable function is analytic along all analytic curves passing through $0$, is it real-analytic?

Differential and manifold, concrete example of a calculation

Determining the linear independence of tangent vectors at a point on the manifold

Smooth approximation of $f(x)=\begin{cases}0&\text{if}\;x<0\\x&\text{if}\;x \geq 0 \end{cases}$

Prove the set of linear continuous inversible operators is open

The identity theorem at the boundary (complex analysis)

Smooth images of manifolds are immersed?

How can I create a cubic spline to connect these two line segments?

Examples of smooth functions 1

Chain rule and smooth functions

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