implementation of shuffle operads

[fchapoton]

There is a Grobner basis theory for operads (Dotsenko-Koroshkin).

As a first step, one needs to have shuffle operads.

Depends on #15634

Component: combinatorics

Keywords: trees, operads

Branch/Commit: u/chapoton/15633 @ 016f100

Issue created by migration from https://trac.sagemath.org/ticket/15633

[fchapoton]

Dependencies: #15634

[sagetrac-vbraun-spam]

comment:2

Attachment: shuffle-operads-fc.patch.gz

[fchapoton]

Changed keywords from trees to trees, operads

[fchapoton]

Branch: u/chapoton/15633

[fchapoton]

comment:5

I made a git branch

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New commits:

628d2c6	No Subject. Modified: free_shuffle_operad.py
a085dce	trac #15633 little more doc

[fchapoton]

Commit: a085dce