Restriction and Tensor Products for Supercharacters of $U_n(2)$

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Restriction and Tensor Products for Supercharacters of $U_n(2)$ #6924

Open bbce994c-d8c4-4a0f-a112-dc3ce7f5c8f7 opened 15 years ago

bbce994c-d8c4-4a0f-a112-dc3ce7f5c8f7 commented 15 years ago

I have implemented the rules for restriction and tensor products found in Thm 4.5 and Cor 4.7 (pages 15 and 18):

http://arxiv.org/abs/0812.2268

The backbone is a recursive algorithm to compute tensor products.

CC: @tscrim

Component: algebra

Keywords: supercharacters, q-set partitions

Branch/Commit: u/chapoton/supercharacters @ 99a4eb9

Issue created by migration from https://trac.sagemath.org/ticket/6924

aghitza commented 14 years ago

comment:1

Will you be submitting a patch?

fchapoton commented 9 years ago

comment:3

There is a branch around there:

u/chapoton/supercharacters

containing Franco's rather complete implementation. It almost works and needs more documentation.

fchapoton commented 9 years ago

New commits:

`3faa5ff`	`Hopf algebra of supercharacters, also known as NCSym or WSym`
`6a42075`
`66637b7`	`Update categories; no more ImportError on startup`
`ac4b04e`	`All doctests pass!`
`4d1d5c0`	`Merge branch 'u/saliola/combinat/supercharacters' into 6.7.b3`
`b828c0e`	`supercharacters : pep8 standard for code, and general refreshing`

fchapoton commented 9 years ago

Branch: u/chapoton/supercharacters

fchapoton commented 9 years ago

Commit: b828c0e

7ed8c4ca-6d56-4ae9-953a-41e42b4ed313 commented 8 years ago

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

`3e977e7`	`Merge branch 'u/chapoton/supercharacters' into 7.2`
`00ec22e`	`python3 print`

7ed8c4ca-6d56-4ae9-953a-41e42b4ed313 commented 8 years ago

Changed commit from b828c0e to 00ec22e

7ed8c4ca-6d56-4ae9-953a-41e42b4ed313 commented 8 years ago

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

`e21aa26`	`Merge branch 'u/chapoton/supercharacters' into 7.3.b0`
`30fae7e`	`trac 6924 fixing import and refs`

7ed8c4ca-6d56-4ae9-953a-41e42b4ed313 commented 8 years ago

Changed commit from 00ec22e to 30fae7e

7ed8c4ca-6d56-4ae9-953a-41e42b4ed313 commented 8 years ago

Changed commit from 30fae7e to ea10f89

7ed8c4ca-6d56-4ae9-953a-41e42b4ed313 commented 8 years ago

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

ea10f89 fixing more imports

7ed8c4ca-6d56-4ae9-953a-41e42b4ed313 commented 4 years ago

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

`26df1b7`	`Merge branch 'u/chapoton/supercharacters' in 9.2.b2`
`beb67c7`	`adaptation to python3 (broken !)`

7ed8c4ca-6d56-4ae9-953a-41e42b4ed313 commented 4 years ago

Changed commit from ea10f89 to beb67c7

7ed8c4ca-6d56-4ae9-953a-41e42b4ed313 commented 4 years ago

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

99a4eb9 less broken, but still

7ed8c4ca-6d56-4ae9-953a-41e42b4ed313 commented 4 years ago

Changed commit from beb67c7 to 99a4eb9