Status: Valid
Owner: ----
CC: [email protected]
Labels: Type-Defect Priority-Medium
New issue 4008 by [email protected]: geometric algebra doesn't seem to work
http://code.google.com/p/sympy/issues/detail?id=4008
from sympy.galgebra import *
metric = '1 0 0,0 1 0,0 0 1'
gamma_x,gamma_y,gamma_z = MV.setup('gamma_x gamma_y gamma_z',metric,True)
gamma_x
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<ipython-input-3-a2ef903bc529> in <module>()
1 from sympy.galgebra import *
2 metric = '1 0 0,0 1 0,0 0 1'
----> 3 gamma_x,gamma_y,gamma_z = MV.setup('gamma_x gamma_y
gamma_z',metric,True)
4 gamma_x
/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/galgebra/ga.py in
setup(basis, metric, coords, rframe, debug, curv)
1924 mv.igrade = 1
1925 MV.blades_MV.append(mv)
-> 1926 MV.build_reciprocal_basis(debug)
1927
1928 MV.blades_MV = tuple(MV.blades_MV)
/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/galgebra/ga.py in
build_reciprocal_basis(debug)
1736
1737 result = S.Zero
-> 1738 for (coef, rbase) in zip(MV.coords, MV.rcpr_bases_MV):
1739 nbase_obj = rbase.obj / MV.rcpr_norm
1740 term = coef * rbase
TypeError: zip argument #1 must support iteration
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