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Feature #354

New function BinRepr (was BinExp, also known as Macaulay representation)

Added by Anna Maria Bigatti almost 11 years ago. Updated almost 11 years ago.

Status:
Closed
Priority:
Normal
Assignee:
John Abbott
Category:
New Function
Target version:
CoCoALib-0.9953
Start date:
23 May 2013
Due date:
% Done:

100%

Estimated time:
Spent time:
10.25 h

Description

port the binomial representation into CoCoALib, and then to CoCoA-5.
It was called "BinExp" in CoCoA-4, but Exp reminds "exponent".

Related issues

Related to CoCoA-5 - Design #474: Eliminate package BinReprIn Progress2014-03-14

History

#1 Updated by Anna Maria Bigatti almost 11 years ago

  • Subject changed from New function BinRepr (also known as Macaulay representation) to New function BinRepr (was BinExp, also known as Macaulay representation)

#2 Updated by John Abbott almost 11 years ago

  • Status changed from In Progress to Feedback
  • % Done changed from 0 to 90

I have implemented BinomialRepr and BinomialReprShift in CoCoALib, and made them accessible from CoCoA-5. The documentation has been updated.

The impl is a compromise between simplicity and speed; anyway, noticeably faster than CoCoA-4 for larger inputs.

Note: we have decided to declare EvalBinExp obsolete because the new function BinomialReprShift is fast enough.

#3 Updated by John Abbott almost 11 years ago

  • Status changed from Feedback to Closed
  • % Done changed from 90 to 100

I'm closing this even though strictly speaking there are no tests for BinomialRepr.

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