Opened 3 years ago

Closed 2 years ago

#22174 closed enhancement (fixed)

Interface expression conversion to gamma() and normalization

Reported by: rws Owned by:
Priority: major Milestone: sage-7.6
Component: symbolics Keywords:
Cc: Merged in:
Authors: Ralf Stephan Reviewers: Travis Scrimshaw
Report Upstream: N/A Work issues:
Branch: 648e498 (Commits) Commit: 648e498e71c4e106ceafe7a6aa0e221fe0b33e85
Dependencies: Stopgaps:

Description

Pynac-0.7.4 provides functionality for conversion of factorial, binomial, and Pochhammer symbols to the resp. gamma expression. Also it provides gamma normalization, i.e., rewriting e.g. gamma(x-1) and gamma(x+2) within one expression to gamma(x-1) and (x-1)*x*(x+1)*gamma(x-1) and subsequent rational normalization, such that fractions can be canceled.

The ticket should add the Python interface and doctests.

Change History (6)

comment:1 Changed 3 years ago by rws

  • Branch set to u/rws/interface_expression_conversion_to_gamma___and_normalization

comment:2 Changed 3 years ago by git

  • Commit set to 648e498e71c4e106ceafe7a6aa0e221fe0b33e85

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

648e49822174: Interface expression conversion to gamma() and normalization

comment:3 Changed 2 years ago by rws

  • Authors set to Ralf Stephan
  • Status changed from new to needs_review

comment:4 Changed 2 years ago by tscrim

  • Reviewers set to Travis Scrimshaw
  • Status changed from needs_review to positive_review

LGTM.

comment:5 Changed 2 years ago by rws

Thanks, this will speed up simplification as well (other ticket).

comment:6 Changed 2 years ago by vbraun

  • Branch changed from u/rws/interface_expression_conversion_to_gamma___and_normalization to 648e498e71c4e106ceafe7a6aa0e221fe0b33e85
  • Resolution set to fixed
  • Status changed from positive_review to closed
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