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Labels: Type-Defect Priority-Medium
New issue 2020 by chr.schu...@gmx.de: Symbols & Matrices
http://code.google.com/p/sympy/issues/detail?id=2020
Hi,
I was wondering whether it is planned to implement matrix support for
symbols. I often use symbolic calculation for mat
Updates:
Cc: mrock...@gmail.com
Comment #13 on issue 2020 by asmeu...@gmail.com: Symbols & Matrices
http://code.google.com/p/sympy/issues/detail?id=2020
Is there anything left to do in this issue now that we have MatrixExpr?
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Comment #15 on issue 2020 by mrock...@gmail.com: Symbols & Matrices
http://code.google.com/p/sympy/issues/detail?id=2020
No, inclusion of the MatrixExpr class does not handle all of the desired
cases.
In particular MatrixExprs do not play nice with the SymPy Matrix object.
This desire was
Updates:
Status: Fixed
Comment #16 on issue 2020 by mrock...@gmail.com: Symbols & Matrices
http://code.google.com/p/sympy/issues/detail?id=2020
Now that ImmutableMatrix is in I think we have covered all requests made in
this issue.
wanted
a = sympy.Symbol('a', commutative=False, shape
Updates:
Status: Accepted
Cc: christian.muise
Labels: Matrices Assumptions
Comment #1 on issue 2020 by asmeurer: Symbols & Matrices
http://code.google.com/p/sympy/issues/detail?id=2020
For eq1, yes, I think we should add support for that. As the third thing
suggests, t
Comment #2 on issue 2020 by christian.muise: Symbols & Matrices
http://code.google.com/p/sympy/issues/detail?id=2020
Depends on what you define the "new assumptions model" to be -- since
they're just symbols, they should be dispatching the is_commutative to the
global_assumptions to check
Comment #3 on issue 2020 by chr.schu...@gmx.de: Symbols & Matrices
http://code.google.com/p/sympy/issues/detail?id=2020
I started writing a first draft of a test script for matrices and symbols.
It could be used as a guideline for implementing these features.
Please feel free to add any function
Updates:
Status: Started
Cc: -christian.muise
Comment #4 on issue 2020 by asmeurer: Symbols & Matrices
http://code.google.com/p/sympy/issues/detail?id=2020
If you decorate the ones that don't work with XFAIL (so that it passes the
test runner), something like this could be push
Comment #5 on issue 2020 by chr.schu...@gmx.de: Symbols & Matrices
http://code.google.com/p/sympy/issues/detail?id=2020
I created a patch with the test script in sympy/matrices/tests and all
functions decorated with @XFAIL
Attachments:
test_sym_matrices.py 6.2 KB
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Comment #6 on issue 2020 by ronan.l...@gmail.com: Symbols & Matrices
http://code.google.com/p/sympy/issues/detail?id=2020
I don't think adding a shape argument to Symbol is a good idea, it would
severely dilute the meaning of the class Symbol and force all code using it
to add checks for the
Comment #7 on issue 2020 by chr.schu...@gmx.de: Symbols & Matrices
http://code.google.com/p/sympy/issues/detail?id=2020
I like the idea of adapting the Indexed class. Is there any description
available what Indexed should be used for? Is the interaction with Matrix
and Symbol a part of it?
Comment #8 on issue 2020 by ellisonbg: Symbols & Matrices
http://code.google.com/p/sympy/issues/detail?id=2020
I agree that adding shape attribute to Symbol or Expr is a bad idea. We
need to get away from adding logic to the core to support new subclasses of
Expr. What we really need are c
Comment #9 on issue 2020 by asmeurer: Symbols & Matrices
http://code.google.com/p/sympy/issues/detail?id=2020
What we really need are custom Add, Mul, Pow, etc. classes that know how
to handle these things.
Really, the default Mul, Add, etc. should be smart enough to do it so that
they are
Comment #10 on issue 2020 by jensen.oyvind: Symbols & Matrices
http://code.google.com/p/sympy/issues/detail?id=2020
In this branch: http://github.com/jegerjensen/sympy/tree/gsoc_result the
Indexed class is more developed.
There is already a shape attribute for the IndexedBase class (which is
Comment #11 on issue 2020 by chr.schu...@gmx.de: Symbols & Matrices
http://code.google.com/p/sympy/issues/detail?id=2020
I really like the Indexed class, and I will have a look at the _op_priority
feature.
What is the general opinion on allowing Symbol/Indexed to interact with
Matrix, i.e.
Comment #12 on issue 2020 by jensen.oyvind: Symbols & Matrices
http://code.google.com/p/sympy/issues/detail?id=2020
About "a - sympy.Matrix(...)":
It would be a well defined operation if the Indexed framework got support
for broadcasting. I think it would be cool to implement exactly the same
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