implement magnitude homology for graph

[fchapoton]

As an interesting homology theory for graphs.

CC: @tscrim

Component: graph theory

Author: Frédéric Chapoton

Branch/Commit: u/chapoton/21410 @ 0749e2a

Issue created by migration from https://trac.sagemath.org/ticket/21410

[fchapoton]

Commit: 11b8e3a

[fchapoton]

comment:1

work in progress

---

New commits:

909b1d9	first step, towards inclusion
1b84b5e	Merge branch 'new_magnitude' into 7.4.b2
11b8e3a	Merge branch 'magnitude' into 7.4.b3

[fchapoton]

Branch: u/chapoton/21410

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

5a31e37	Merge branch 'u/chapoton/21410' in 7.5.b2
f96b9fc	trac 21410 add some missing imports, plus py3 range, other details

[sagetrac-git]

Changed commit from 11b8e3a to f96b9fc

[sagetrac-git]

Changed commit from f96b9fc to 271c6e4

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

b2a2413	Merge branch 'u/chapoton/21410' in 7.5.rc3
271c6e4	trac 21410 some details, python3 code, more doc

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

7ac0c4f

trac 21410 more doc

[sagetrac-git]

Changed commit from 271c6e4 to 7ac0c4f

[fchapoton]

Author: Frédéric Chapoton

[tscrim]

comment:6

Just a quick comment: I don't see the need to have a class as there is not really any state being stored. Instead, I think these should be Graph methods with merging in compute_generators and differential into chains.

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. This was a forced push. New commits:

0749e2a

first step, towards inclusion

[sagetrac-git]

Changed commit from 7ac0c4f to 0749e2a