List questions from surfaces

Published on 27 Oct 2015 - 23:45

63

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Relation between curves in a complete linear system contained in another

Published on 02 Apr 2026 - 10:40

3.3k

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Why does $ds=\frac{dxdy}{|n\cdot k|}$ for surface integrals?

Published on 01 Nov 2015 - 0:02

644

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Pullback of line bundles and divisors

Published on 02 Apr 2026 - 15:13

624

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Geometrically ruled surface, sections and intersection numbers.

Published on 26 Mar 2026 - 12:09

4.4k

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Stokes's theorem outer unit normal for a hemisphere

Published on 27 Mar 2026 - 20:32

66

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Is equal curved surface areas a coincidence

Published on 02 Apr 2026 - 15:42

71

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$\mathbb P^1\times \mathbb P^1$ is minimal

Published on 07 Nov 2015 - 11:22

921

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The Hirzebruch surface $\mathbb F_n$ contains a unique irreducible curve with negative self-intersection.

Published on 09 Nov 2015 - 1:57

96

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For all unit vectors $\mathbf u$ and a positive definite $\mathbf C$, what surface do vectors $\mathbf u \mathbf u^\top \mathbf C \mathbf u$ form?

Published on 28 Mar 2026 - 9:44

432

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what is the minimum surface area shape required in order to contain a 1 meter line at all angles

Published on 10 Mar 2026 - 13:04

1.3k

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Find the Equation of the Envelope of a Family of Line (Plane) Segments

Published on 28 Mar 2026 - 9:53

165

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Path Lengths on a Sphere example.

Published on 11 Nov 2015 - 10:26

246

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Non-existence of embedded incompressible surfaces

Published on 12 Nov 2015 - 13:07

169

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Manifold is cut along hypersurfaces; how to define a connection on this?

Published on 12 Nov 2015 - 19:56

List Question

About a theorem in Beauville's book.

Relation between curves in a complete linear system contained in another

Why does $ds=\frac{dxdy}{|n\cdot k|}$ for surface integrals?

Pullback of line bundles and divisors

Geometrically ruled surface, sections and intersection numbers.

Stokes's theorem outer unit normal for a hemisphere

Is equal curved surface areas a coincidence

$\mathbb P^1\times \mathbb P^1$ is minimal

The Hirzebruch surface $\mathbb F_n$ contains a unique irreducible curve with negative self-intersection.

For all unit vectors $\mathbf u$ and a positive definite $\mathbf C$, what surface do vectors $\mathbf u \mathbf u^\top \mathbf C \mathbf u$ form?

what is the minimum surface area shape required in order to contain a 1 meter line at all angles

Find the Equation of the Envelope of a Family of Line (Plane) Segments

Path Lengths on a Sphere example.

Non-existence of embedded incompressible surfaces

Manifold is cut along hypersurfaces; how to define a connection on this?

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