The enumerated set of non negative integers

[hivert]

The following patch implement the set of non-negative integers in the category EnumeratedSets(). This is needed when making the unions of a family of enumerated sets such has Permutations() being defined as the union of Permutations(n) for all n.

Depends on the category framework #5891.

Florent

CC: @sagetrac-sage-combinat

Component: combinatorics

Keywords: Non negative integers

Author: Florent Hivert

Reviewer: Nicolas M. Thiéry

Merged: sage-4.3.alpha0

Issue created by migration from https://trac.sagemath.org/ticket/7395

[hivert]

comment:1

Attachment: trac_7395_non_neg_integer_enumset-fh.patch.gz

[nthiery]

comment:2

Attachment: trac_7395_non_neg_integer_enumset-fh.2.patch.gz

The updated patch fixes 3 typos which have been cross-reviewed by Florent

[mwhansen]

Merged: sage-4.3.alpha0