Question

For which $c$ do the surfaces $x^2+y^2+z^2=1$ and $x^2+y^2+c=z$ intersect tangentially? Orthogonally?

score 141 · Answer 1 · 2023-07-28 03:59:06

141

Views

For which $c$ do the surfaces $x^2+y^2+z^2=1$ and $x^2+y^2+c=z$ intersect tangentially? Orthogonally?

Published on 28 Jul 2023 - 3:59

score 71 · Answer 2 · 2026-03-27 18:38:12

71

Views

Surfaces in $\mathbb{R}^n$ locally isometric to $S^{n-1}$

Published on 27 Mar 2026 - 18:38

score 125 · Answer 3 · 2026-03-29 12:40:44

125

Views

Two surfaces with same homology groups but different fundamental group

Published on 29 Mar 2026 - 12:40

score 17 · Answer 4 · 2026-03-14 03:47:17

17

Views

rational points in singular quartic surface

Published on 14 Mar 2026 - 3:47

score 47 · Answer 5 · 2023-08-06 19:49:38

47

Views

Preimage of a point in differential geometry of surfaces.

Published on 06 Aug 2023 - 19:49

score 30 · Answer 6 · 2023-08-15 14:22:45

30

Views

Does there exist a regular parametrisation $x:U \to \mathbb{E}^3$ such that $E=G=l=n=1$ and $F=m=0$

Published on 15 Aug 2023 - 14:22

score 50 · Answer 7 · 2026-03-28 04:34:25

50

Views

Parametric Surfaces Appearing completely different in graphing software than in original paper

Published on 28 Mar 2026 - 4:34

score 13 · Answer 8 · 2026-03-25 22:25:16

13

Views

Linear fitting of values on non-uniformly parametrized B-spline surface

Published on 25 Mar 2026 - 22:25

score 37 · Answer 9 · 2026-03-28 16:58:07

37

Views

Estimating mean curvature of a surface by two perpendicular curves of the surface

Published on 28 Mar 2026 - 16:58

score 75 · Answer 10 · 2026-02-23 10:07:21

75

Views

Divergence theorem with normal component of a curl to a surface

Published on 23 Feb 2026 - 10:07

score 56 · Answer 11 · 2026-03-25 06:30:33

56

Views

Classification of good foliations of a pair of pants

Published on 25 Mar 2026 - 6:30

score 34 · Answer 12 · 2026-03-25 17:43:32

34

Views

Orientable surface $M\subset\mathbb{R^{m+n}}$ such that has no normal linearly independent vector fields

Published on 25 Mar 2026 - 17:43

score 65 · Answer 13 · 2023-08-27 11:42:06

65

Views

Find $\epsilon$ such that $\varphi^{\epsilon} = \sigma + \epsilon(\cos t \mathbf{n} + \sin t \mathbf{b})$ is injective ($\sigma$ biregular curve) .

Published on 27 Aug 2023 - 11:42

score 34 · Answer 14 · 2023-08-31 12:17:45

34

Views

Which surface do these conditions determine (and how to visualize it)?

Published on 31 Aug 2023 - 12:17

score 52 · Answer 15 · 2023-09-01 18:52:12

52

Views

How to calculate intersection of two surfaces in parametric form

Published on 01 Sep 2023 - 18:52

List Question

For which $c$ do the surfaces $x^2+y^2+z^2=1$ and $x^2+y^2+c=z$ intersect tangentially? Orthogonally?

Surfaces in $\mathbb{R}^n$ locally isometric to $S^{n-1}$

Two surfaces with same homology groups but different fundamental group

rational points in singular quartic surface

Preimage of a point in differential geometry of surfaces.

Does there exist a regular parametrisation $x:U \to \mathbb{E}^3$ such that $E=G=l=n=1$ and $F=m=0$

Parametric Surfaces Appearing completely different in graphing software than in original paper

Linear fitting of values on non-uniformly parametrized B-spline surface

Estimating mean curvature of a surface by two perpendicular curves of the surface

Divergence theorem with normal component of a curl to a surface

Classification of good foliations of a pair of pants

Orientable surface $M\subset\mathbb{R^{m+n}}$ such that has no normal linearly independent vector fields

Find $\epsilon$ such that $\varphi^{\epsilon} = \sigma + \epsilon(\cos t \mathbf{n} + \sin t \mathbf{b})$ is injective ($\sigma$ biregular curve) .

Which surface do these conditions determine (and how to visualize it)?

How to calculate intersection of two surfaces in parametric form

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