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2018-09-17 08:09:37 -0500 | answered a question | What is a 'CoxeterGroup'? Okay, here are the minimal steps that you need to take (for a complete working example, see here): Create a class representing the groupThis class should look as follows: The requirements on the semantics of these methods are implicit, but can be gathered quite easily from the source file of Subclassing from (given that I don't exactly know how subclassing from Create a class representing elements of the groupThis should look like this: I won't go into all details here, but Note that it's really important that which can evaluate to |
2018-09-07 08:33:59 -0500 | commented answer | What is a 'CoxeterGroup'? This does not seem to answer my question. |
2018-09-06 05:27:53 -0500 | asked a question | What is a 'CoxeterGroup'? Hi, I'm trying to implement a certain Coxeter group in Sage, for the purpose of building the corresponding Iwahori-Hecke algebra over it using Afaict, the methods of |
2018-06-13 11:59:54 -0500 | commented answer | PARI stack overflows Would computing the kernel of an integer matrix of size about 2000x2000 be "heavy"? |
2018-06-12 11:38:18 -0500 | asked a question | PARI stack overflows Trying to determine the kernel of a map between free How do I adjust the maximum PARI stack size from within Sage? Edit: Strangely, whether this problem occurs does not only depend on the total memory used. In one case, the computation used up to 14 GB and ran just fine, in another case this error occured when only 8 GB had been used. |
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2018-06-12 09:13:50 -0500 | asked a question | Running several commands from command line You can make Sage evaluate a given Python expression by running |
2018-05-24 11:47:26 -0500 | commented answer | free module changes dimensions after base change The map that I want to base change is not multiplication by two. In fact, trying to base change the map in question throws an exception, precisely because the dimension of the codomain changes. |
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2018-05-23 09:07:45 -0500 | commented answer | free module changes dimensions after base change I have a homomorphism between two free modules and what to base change it to a finite field. |
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2018-05-21 18:15:27 -0500 | commented answer | free module changes dimensions after base change So, |
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2018-05-21 15:46:30 -0500 | asked a question | free module changes dimensions after base change Hi, I have a free module of rank 1 over the integers However, when I base change it to the field with two elements, it changes dimension! What's going on? P.S.: What does Sage mean by "degree"? |
2018-05-21 15:46:30 -0500 | asked a question | free module changes dimensions after base change Hi, I have a free module of rank 1 over the integers However, when I base change it to the field with two elements, it changes dimension! What's going on? P.S.: What does Sage mean by "degree"? |