#16844: matrix constructor of free Z-module homomorphism
------------------------------+----------------------------
Reporter: pooja | Owner: pooja
Type: enhancement | Status: new
Priority: minor | Milestone: sage-6.4
Component: linear algebra | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
------------------------------+----------------------------
{{{
H = Hom(ZZ^2, ZZ^2)
sage: H.an_element()
Free module morphism defined by the matrix
[2 0]
[0 2]
Domain: Ambient free module of rank 2 over the principal ideal domain
Integer Ring
Codomain: Ambient free module of rank 2 over the principal ideal domain
Integer Ring
sage: f = H.an_element()
sage: f.matrix
<bound method FreeModuleMorphism.matrix of Free module morphism defined by
the matrix
[2 0]
[0 2]
Domain: Ambient free module of rank 2 over the principal ideal domain
Integer Ring
Codomain: Ambient free module of rank 2 over the principal ideal domain
Integer Ring>
sage: matrix(f)
---------------------------------------------------------------------------
ValueError Traceback (most recent call
last)
<ipython-input-5-2da0ca3992a5> in <module>()
----> 1 matrix(f)
/Applications/sage/local/lib/python2.7/site-
packages/sage/matrix/constructor.pyc in _matrix_constructor(*args, **kwds)
711 entries = args[0]
712 else:
--> 713 raise ValueError("Invalid matrix constructor.
Type matrix? for help")
714 else:
715 raise ValueError("Invalid matrix constructor. Type
matrix? for help")
ValueError: Invalid matrix constructor. Type matrix? for help"
}}}
To modify matrix constructor of morphism of free modules
--
Ticket URL: <http://trac.sagemath.org/ticket/16844>
Sage <http://www.sagemath.org>
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