Opened 15 years ago

Last modified 7 weeks ago

#237 new enhancement

Add inverse expression/equation identifier capability to Sage — at Version 8

Reported by: was Owned by: was
Priority: minor Milestone: sage-wishlist
Component: interfaces Keywords:
Cc: kini, slelievre Merged in:
Authors: Reviewers:
Report Upstream: N/A Work issues:
Branch: Commit:
Dependencies: Stopgaps:

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Description (last modified by kcrisman)

It would be nice to have some sort of inverse expression finder that takes a real number and returns possible identities it might be, like the identify Maple command or the Inverse Symbolic Calculator of yore. This could be via a web interface or by having an spkg (perhaps optional) for such functionality.


Old summary was "create an interface to the "Inverse Symbolic Calculator"

Write a function that queries this web pge and gives the result:

http://oldweb.cecm.sfu.ca/projects/ISC/ISCmain.html

See sage/databases/sloane.py for ideas for how to do this.

Change History (8)

comment:1 Changed 15 years ago by was

  • Description modified (diff)

comment:2 Changed 15 years ago by nbruin

This interface is running on a heavily ageing SGI server. The software providing the interface is completely unmaintained. When this server dies, the Inverse Symbolic Calculator will be gone.

comment:3 Changed 14 years ago by mabshoff

  • Milestone set to sage-wishlist

comment:4 follow-up: Changed 12 years ago by kcrisman

  • Report Upstream set to N/A

There is a new version of this, apparently supported by both Maplesoft and NSERC, at this link. So maybe this is doable after all - we already have an interface for Wolfram integrator, for instance.

comment:5 in reply to: ↑ 4 Changed 12 years ago by nbruin

Replying to kcrisman:

There is a new version of this, apparently supported by both Maplesoft and NSERC, at this link.

I am sure that their names are only there because the work was done on grants funded by them. Jon Borwein is no longer at Dalhousie and I don't think there is much of his group left there either. You'll be interfacing with unmaintained code.

comment:6 Changed 10 years ago by jason

Indeed, the "new version" seems to not be up now.

comment:7 Changed 10 years ago by jason

See also RIES: http://groups.google.com/group/sage-devel/browse_thread/thread/339a2a5fce57814d for another option for this functionality.

comment:8 Changed 9 years ago by kcrisman

  • Cc kini added
  • Description modified (diff)
  • Summary changed from create an interface to the "Inverse Symbolic Calculator" to Add inverse expression/equation identifier capability to Sage

Indeed, kini made an spkg for that. Let's change this summary.

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