Opened 5 years ago

Closed 17 months ago

#7812 closed enhancement (duplicate)

Compute Bell numbers using mpmath by default (instead of GAP)

Reported by: jbandlow Owned by: sage-combinat
Priority: major Milestone: sage-duplicate/invalid/wontfix
Component: combinatorics Keywords: bell numbers
Cc: jbandlow, ncohen Merged in:
Authors: Reviewers: Ben Salisbury
Report Upstream: N/A Work issues:
Branch: Commit:
Dependencies: Stopgaps:

Description

Fredrick Johansson discusses here his implementation of generalized Bell numbers in mpmath. I've verified that this function is present in the version of mpmath shipped with sage 4.3. Benchmarks show it is faster than GAP (currently used by sage) and even mathematica. This should be very easy to wrap.

Change History (3)

comment:1 Changed 18 months ago by tscrim

  • Cc ncohen added
  • Milestone set to sage-duplicate/invalid/wontfix
  • Status changed from new to needs_review

I've exposed (wrapped) mpmath's bell() in #10170.

comment:2 Changed 17 months ago by bsalisbury1

  • Reviewers set to Ben Salisbury
  • Status changed from needs_review to positive_review

comment:3 Changed 17 months ago by jdemeyer

  • Resolution set to duplicate
  • Status changed from positive_review to closed
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