Re: [sage-support] Re: bug: derivatives as dictionary keys

2009-11-23 Thread Burcin Erocal
Hi Alex, On Sun, 22 Nov 2009 18:30:35 -0800 (PST) Alex Raichev tortoise.s...@gmail.com wrote: Sweet, Burcin. I'll check out your patch. Can you increase the derivative orders to 20 something? Sorry, I won't have more time to play with this in the next two weeks. If you still run into

Re: [sage-support] Re: bug: derivatives as dictionary keys

2009-11-22 Thread Burcin Erocal
Hi, On Sat, 21 Nov 2009 14:02:16 +0100 Burcin Erocal bur...@erocal.org wrote: I can't believe I'm looking at these hashes for the third time. I finally took some time to think about this, and found an (almost) perfect hash function to replace my previous braindead implementation. I hope we

[sage-support] Re: bug: derivatives as dictionary keys

2009-11-22 Thread Alex Raichev
Sweet, Burcin. I'll check out your patch. Can you increase the derivative orders to 20 something? Alex On Nov 23, 7:30 am, Burcin Erocal bur...@erocal.org wrote: Hi, On Sat, 21 Nov 2009 14:02:16 +0100 Burcin Erocal bur...@erocal.org wrote: I can't believe I'm looking at these hashes for

Re: [sage-support] Re: bug: derivatives as dictionary keys

2009-11-21 Thread Burcin Erocal
Hi Alex, On Fri, 20 Nov 2009 11:51:57 -0800 (PST) Alex Raichev tortoise.s...@gmail.com wrote: Thanks, William. I'll check that out. Also, for those interested in the bug i reported, i'd like to rephrase the description of my situation, because i stated it a little confusingly above. Take

[sage-support] Re: bug: derivatives as dictionary keys

2009-11-20 Thread Alex Raichev
Thanks, William. I'll check that out. Also, for those interested in the bug i reported, i'd like to rephrase the description of my situation, because i stated it a little confusingly above. Take two. I have a big symbolic expression E involving lots of derivatives. I want to replace the

[sage-support] Re: bug: derivatives as dictionary keys

2009-11-19 Thread Alex Raichev
Thanks for the workaround, William. I was thinking the same thing as a temporary fix but am having difficulties with that approach. Here's my situation. I have a big symbolic expression E involving lots of derivatives. I want to substitute the derivatives with other symbolic expressions, and

Re: [sage-support] Re: bug: derivatives as dictionary keys

2009-11-19 Thread William Stein
On Thu, Nov 19, 2009 at 7:45 PM, Alex Raichev tortoise.s...@gmail.com wrote: Thanks for the workaround, William.  I was thinking the same thing as a temporary fix but am having difficulties with that approach. Here's my situation.  I have a big symbolic expression E involving lots of