List questions from surfaces

Published on 28 Mar 2026 - 10:56

420

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An orientable surface that cannot be embedded into $\Bbb R^3$?

Published on 25 Mar 2026 - 14:27

153

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Boundary of a surface z=\sin(x)\cos(y)

Published on 26 Mar 2026 - 14:31

204

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Extending a map of a surface's boundary

Published on 26 Mar 2026 - 4:52

203

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A question regarding orthogonal parametrizations

Published on 21 Apr 2020 - 14:05

124

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If $X$ is a K3 surface and $X\to C$ is an elliptic fibration, then $C\simeq \Bbb{P}^1$

Published on 21 Apr 2020 - 20:34

145

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Very simple characterisation of $(-1)$-curves

Published on 25 Mar 2026 - 13:55

99

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In "Curves and Surfaces" by Montiel and Ros, is $(dF_r)_p(e_i) = (1-rk_i(p))e_i$ correct?

Published on 22 Apr 2020 - 21:14

177

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Divergence on a parameterised surface

Published on 27 Mar 2026 - 0:01

89

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If the graph over a disc in $\Bbb{R}^2$ of radius $r$ has mean curvature $H \geq a$, then $ar \leq 1$

Published on 25 Apr 2020 - 16:07

517

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How to compute the side length of an equilateral hyperbolic triangle from its angle?

Published on 27 Mar 2026 - 21:37

36

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Does any regular surface have a sequence of inscribed polyhedra whose surface area arbitrarily exceeds the area of the surface?

Published on 25 Mar 2026 - 16:01

173

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Intuition behind orientation of a surface

Published on 28 Apr 2020 - 17:30

366

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Is there a general method to compute the area/volume enclosed by an implicit curve/surface?

Published on 23 Feb 2026 - 10:02

57

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Why can we cover a surface in $\Bbb{R}^3$ with countably many open orientable connected subsets?

Published on 29 Apr 2020 - 19:03

List Question

Umbilical points of the ellipsoid.

An orientable surface that cannot be embedded into $\Bbb R^3$?

Boundary of a surface z=\sin(x)\cos(y)

Extending a map of a surface's boundary

A question regarding orthogonal parametrizations

If $X$ is a K3 surface and $X\to C$ is an elliptic fibration, then $C\simeq \Bbb{P}^1$

Very simple characterisation of $(-1)$-curves

In "Curves and Surfaces" by Montiel and Ros, is $(dF_r)_p(e_i) = (1-rk_i(p))e_i$ correct?

Divergence on a parameterised surface

If the graph over a disc in $\Bbb{R}^2$ of radius $r$ has mean curvature $H \geq a$, then $ar \leq 1$

How to compute the side length of an equilateral hyperbolic triangle from its angle?

Does any regular surface have a sequence of inscribed polyhedra whose surface area arbitrarily exceeds the area of the surface?

Intuition behind orientation of a surface

Is there a general method to compute the area/volume enclosed by an implicit curve/surface?

Why can we cover a surface in $\Bbb{R}^3$ with countably many open orientable connected subsets?

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