The summary says it all. See also the patch on the Sage-Combinat patch server:

http://combinat.sagemath.org/hgwebdir.cgi/patches/file/tip/trac_9280-graded-algebras-example.patch

Thanks to Jason Bandlow and Franco Saliola who participated to the improvement of the example. It now depends on #10193.

Depends on #10193
Depends on #12453

Component: categories

Keywords: graded algebra

Author: John Palmieri, Nicolas M. Thiéry

Branch/Commit: public/categories/graded_examples-9280 @ fb05e6c

Reviewer: Frédéric Chapoton, Travis Scrimshaw

Issue created by migration from https://trac.sagemath.org/ticket/9280