#6851: hashes for derivatives of symbolic functions still collide
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Reporter: burcin | Owner: burcin
Type: defect | Status: new
Priority: major | Milestone: sage-4.1.2
Component: symbolics | Keywords:
Reviewer: | Author:
Merged: |
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It seems that #6243 didn't fix things properly:
{{{
Thanks to those who worked on closing ticket 6243 regarding
derivatives as dictionary keys for the release of Sage 4.1.1. It
appears that there's still a bug, though (see below).
Alex
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| Sage Version 4.1.1, Release Date: 2009-08-14
|
| Type notebook() for the GUI, and license() for information.
|
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sage: f= function('f',x)
sage: d= {}
sage: for i in [1..5]:
....: print diff(f,x,i)
....: d[diff(f,x,i)] = i
....:
D[0](f)(x)
D[0, 0](f)(x)
<boom>
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6851>
Sage <http://sagemath.org/>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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