Question

Am I forgetting a factor of $2$ in calculating the area of $S=\{(x,y,z)\in\mathbb{R}^3 | x^2+y^2+z^2=25, 2x^2+y^2\leq 25\}$?

score 47 · Answer 1 · 2024-01-30 17:44:30

47

Views

Am I forgetting a factor of $2$ in calculating the area of $S=\{(x,y,z)\in\mathbb{R}^3 | x^2+y^2+z^2=25, 2x^2+y^2\leq 25\}$?

Published on 30 Jan 2024 - 17:44

score 50 · Answer 2 · 2024-02-01 13:10:58

50

Views

Determine the smoothly-varying principal directions of a regular surface

Published on 01 Feb 2024 - 13:10

score 71 · Answer 3 · 2026-03-26 07:58:53

71

Views

Example of a homeomorphism that is not a diffeomorphism between two diffeomorphic surfaces in $\mathbb{R}^3$

Published on 26 Mar 2026 - 7:58

score 35 · Answer 4 · 2024-02-03 13:56:15

35

Views

tangent curves on a surface

Published on 03 Feb 2024 - 13:56

score 34 · Answer 5 · 2026-03-29 17:25:47

34

Views

Normal curvatures of differentiable curves on a surface with zero Gaussian curvature

Published on 29 Mar 2026 - 17:25

score 161 · Answer 6 · 2026-03-29 17:25:20

161

Views

Principal curvature of a surface defined by an equation

Published on 29 Mar 2026 - 17:25

score 54 · Answer 7 · 2026-03-26 04:36:21

54

Views

How do I compute the action of an automorphism on the Néron-Severi group of a projective variety?

Published on 26 Mar 2026 - 4:36

score 72 · Answer 8 · 2026-03-26 17:53:43

72

Views

Find the control points in 3D space of a 2D Bézier mapped on the parametric space of a (3D) Bézier patch

Published on 26 Mar 2026 - 17:53

score 101 · Answer 9 · 2026-03-27 23:57:30

101

Views

Isometry of surface

Published on 27 Mar 2026 - 23:57

score 39 · Answer 10 · 2024-02-05 17:20:28

39

Views

Area of a surface that is a graph of a function

Published on 05 Feb 2024 - 17:20

score 79 · Answer 11 · 2026-03-25 20:41:47

79

Views

Tensor product of a very ample line bundle with a torsion line bundle

Published on 25 Mar 2026 - 20:41

score 47 · Answer 12 · 2024-02-07 13:04:48

47

Views

An exercise of R. Friedman's Algebraic Surfaces and Holomorphic Vector Bundles.

Published on 07 Feb 2024 - 13:04

score 109 · Answer 13 · 2024-02-07 18:20:35

109

Views

Explicit example of an algebraic surface of Kodaira dimension 1 that is not a product of two curves.

Published on 07 Feb 2024 - 18:20

score 38 · Answer 14 · 2024-02-11 03:09:57

38

Views

Calculate Up Vector of Object on Surface Given Points and Normals

Published on 11 Feb 2024 - 3:09

score 31 · Answer 15 · 2024-02-13 03:52:42

31

Views

How can I find the coefficients of a quadric surface, knowing only its basic form and several points it contains?

Published on 13 Feb 2024 - 3:52

List Question

Am I forgetting a factor of $2$ in calculating the area of $S=\{(x,y,z)\in\mathbb{R}^3 | x^2+y^2+z^2=25, 2x^2+y^2\leq 25\}$?

Determine the smoothly-varying principal directions of a regular surface

Example of a homeomorphism that is not a diffeomorphism between two diffeomorphic surfaces in $\mathbb{R}^3$

tangent curves on a surface

Normal curvatures of differentiable curves on a surface with zero Gaussian curvature

Principal curvature of a surface defined by an equation

How do I compute the action of an automorphism on the Néron-Severi group of a projective variety?

Find the control points in 3D space of a 2D Bézier mapped on the parametric space of a (3D) Bézier patch

Isometry of surface

Area of a surface that is a graph of a function

Tensor product of a very ample line bundle with a torsion line bundle

An exercise of R. Friedman's Algebraic Surfaces and Holomorphic Vector Bundles.

Explicit example of an algebraic surface of Kodaira dimension 1 that is not a product of two curves.

Calculate Up Vector of Object on Surface Given Points and Normals

How can I find the coefficients of a quadric surface, knowing only its basic form and several points it contains?

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