# Questions tagged [topology]

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### KnotTheory` Passing PD Encoding of a Knot Diagram to Kh

I have a bunch of knot diagrams I would like to use the Kh function in KnotTheory to compute the Khovanov homology for. Almost ...
• 133
1 vote
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### Persistent homology and Mathematica

I have a cloud of roughly 200 points in the plane. I would like to use Mathematica to draw the barcode corresponding to the corresponding persistent homology. There is a resource function ...
• 193
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### How to make an efficient SimplyConnectedQ (check for abscence of holes)?

I would like to find an efficient way to detect whether a region has a hole regardless of how many it has. This question (Separate boundaries of multiply connected region) shows some methods but it ...
• 5,637
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### Generating a non-convex polyhedron from polygons and normals

I am working on developing "directional offset" module, which requires pretty tricky mesh generation: offset values vary in different directions. Suppose I have list of points and polygons, ...
• 333
251 views

### Animating a Sphere Eversion (Turning a sphere inside out)

I'm interested in animating a sphere eversion like the one shown in the following gif. The full video is here: https://www.youtube.com/watch?v=OI-To1eUtuU Normally, I would offer my own code as a ...
• 5,377
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### MorphologicalEulerNumber misbehaving in 3D?

Context I would like to compute the MorphologicalEulerNumber of 3D GaussianRandomField as a function of height above a given threshold. Attempt I proceed as follows:...
• 22.5k
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### Running Mathematica in 'SpouseMode'

In this previous question I looked into a deprecated capability of Mathematica from Version 2. Mathematica command that allows it to read my intentions Thanks to all for your answers. I note that ...
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