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Installing the ChomP package causes `ChainComplex` to give different (and basically wrong) answers. Here are two examples from the doctests:
```
sage: C = ChainComplex([matrix(ZZ, 1, 1, [2]), matr…
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Any self-edges in an edge file causes `ctree` to hang while verifying that the input graph is connected. Problem occurs [here](https://github.com/eldridgejm/denali/blob/master/ctree/ctree.cpp#L108).
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```
Add examples to tutorial in which we
(1) sample points from double torus in R^3 and reconstruct homology
(2) sample points from sphere in R^3, build the projective plane metric space,
and recons…
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This will provide a fast uniform (almost) random generator for triangulations.
This uses the algorithm via a bijection with blossoming trees due to Schaeffer and Poulalhon.
CC: @nathanncohen
Com…
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`normals.facetNormals`
https://github.com/mikolalysenko/gl-simplicial-complex/blob/master/mesh.js#L196
should be
`normals.faceNormals`
https://github.com/mikolalysenko/normals/blob/master/normals.js…
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For SRG database, we need these. This ticket implements AS(q) (q odd prime power) and T_2*(O) constructions of GQ(q-1,q+1).
Depends on #19136
Depends on #19224
CC: @nathanncohen
Component: **gr…
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When a simplicial complex has tuples as vertices, the automorphism group is wrong: it is always returned as the trivial group.
CC: @nathanncohen
Component: **algebraic topology**
Keywords: **sim…
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As discussed in https://groups.google.com/d/topic/sage-devel/os1LzBjsYnQ/discussion, here is a ticket to implement a function that returns, given a boolean monotone function `f` on the subsets of a …
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As was noticed in #14793, some sanity checks need to be disabled in Hom when called upon unpickling because the input may include an unitialized parent. Since #14793, this is achieved by looking at …
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``` rconsole
> install.packages("igraph")
Installing package into 'C:/Users/Kun/Documents/R/win-library/3.2'
(as 'lib' is unspecified)
There is a binary version available but the source version is …