Since 8.8beta1 there is a critical issue regarding scalar fields:
sage: M = Manifold(2, 'M')
sage: X.<x,y> = M.chart()
sage: f = M.scalar_field(x, name='f')
sage: f in M.diff_form_module(1)
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-38-9654b754d2bc> in <module>()
2 X = M.chart(names=('x', 'y',)); (x, y,) = X._first_ngens(2)
3 f = M.scalar_field(x, name='f')
----> 4 f in M.diff_form_module(Integer(1))
/home/michi/GitProjects/sage/local/lib/python2.7/site-packages/sage/structure/parent.pyx
in sage.structure.parent.Parent.__contains__
(build/cythonized/sage/structure/parent.c:9885)()
1090 return True
1091 try:
-> 1092 x2 = self(x)
1093 EQ = (x2 == x)
1094 if EQ is True:
/home/michi/GitProjects/sage/local/lib/python2.7/site-packages/sage/structure/parent.pyx
in sage.structure.parent.Parent.__call__
(build/cythonized/sage/structure/parent.c:9219)()
898 if mor is not None:
899 if no_extra_args:
--> 900 return mor._call_(x)
901 else:
902 return mor._call_with_args(x, args, kwds)
/home/michi/GitProjects/sage/local/lib/python2.7/site-packages/sage/structure/coerce_maps.pyx
in sage.structure.coerce_maps.DefaultConvertMap_unique._call_
(build/cythonized/sage/structure/coerce_maps.c:4551)()
160 print(type(C), C)
161 print(type(C._element_constructor),
C._element_constructor)
--> 162 raise
163
164 cpdef Element _call_with_args(self, x, args=(), kwds={}):
/home/michi/GitProjects/sage/local/lib/python2.7/site-packages/sage/structure/coerce_maps.pyx
in sage.structure.coerce_maps.DefaultConvertMap_unique._call_
(build/cythonized/sage/structure/coerce_maps.c:4443)()
155 cdef Parent C = self._codomain
156 try:
--> 157 return C._element_constructor(x)
158 except Exception:
159 if print_warnings:
/home/michi/GitProjects/sage/local/lib/python2.7/site-packages/sage/manifolds/differentiable/diff_form_module.pyc
in _element_constructor_(self, comp, frame, name, latex_name)
818 resu = self.element_class(self._fmodule, self._degree,
name=name,
819 latex_name=latex_name)
--> 820 if comp != []:
821 resu.set_comp(frame)[:] = comp
822 return resu
/home/michi/GitProjects/sage/local/lib/python2.7/site-packages/sage/manifolds/scalarfield.pyc
in __ne__(self, other)
1285
1286 """
-> 1287 return not (self == other)
1288
1289 ####### End of required methods for an algebra element (beside
arithmetic) #######
/home/michi/GitProjects/sage/local/lib/python2.7/site-packages/sage/manifolds/scalarfield.pyc
in __eq__(self, other)
1244 return False
1245 try:
-> 1246 other = self.parent()(other) # conversion to a scalar
field
1247 except TypeError:
1248 return False
/home/michi/GitProjects/sage/local/lib/python2.7/site-packages/sage/structure/parent.pyx
in sage.structure.parent.Parent.__call__
(build/cythonized/sage/structure/parent.c:9219)()
898 if mor is not None:
899 if no_extra_args:
--> 900 return mor._call_(x)
901 else:
902 return mor._call_with_args(x, args, kwds)
/home/michi/GitProjects/sage/local/lib/python2.7/site-packages/sage/structure/coerce_maps.pyx
in sage.structure.coerce_maps.DefaultConvertMap_unique._call_
(build/cythonized/sage/structure/coerce_maps.c:4551)()
160 print(type(C), C)
161 print(type(C._element_constructor),
C._element_constructor)
--> 162 raise
163
164 cpdef Element _call_with_args(self, x, args=(), kwds={}):
/home/michi/GitProjects/sage/local/lib/python2.7/site-packages/sage/structure/coerce_maps.pyx
in sage.structure.coerce_maps.DefaultConvertMap_unique._call_
(build/cythonized/sage/structure/coerce_maps.c:4443)()
155 cdef Parent C = self._codomain
156 try:
--> 157 return C._element_constructor(x)
158 except Exception:
159 if print_warnings:
/home/michi/GitProjects/sage/local/lib/python2.7/site-packages/sage/manifolds/scalarfield_algebra.pyc
in _element_constructor_(self, coord_expression, chart, name, latex_name)
470 coord_expression=coord_expression,
471 name=name, latex_name=latex_name,
--> 472 chart=chart)
473 return resu
474
/home/michi/GitProjects/sage/local/lib/python2.7/site-packages/sage/manifolds/differentiable/scalarfield.pyc
in __init__(self, parent, coord_expression, chart, name, latex_name)
630 """
631 ScalarField.__init__(self, parent,
coord_expression=coord_expression,
--> 632 chart=chart, name=name,
latex_name=latex_name)
633 self._tensor_type = (0,0)
634
/home/michi/GitProjects/sage/local/lib/python2.7/site-packages/sage/manifolds/scalarfield.pyc
in __init__(self, parent, coord_expression, chart, name, latex_name)
1101 self._express[ch] =
ch.function(coord_expression)
1102 else:
-> 1103 self._express[chart] =
chart.function(coord_expression)
1104 self._init_derived() # initialization of derived quantities
1105
/home/michi/GitProjects/sage/local/lib/python2.7/site-packages/sage/manifolds/chart.pyc
in function(self, expression, calc_method, expansion_symbol, order)
1087 return parent.element_class(parent, expression,
calc_method=calc_method,
1088 expansion_symbol=expansion_symbol,
-> 1089 order=order)
1090
1091 def zero_function(self):
/home/michi/GitProjects/sage/local/lib/python2.7/site-packages/sage/manifolds/chart_func.pyc
in __init__(self, parent, expression, calc_method, expansion_symbol, order)
360 calc_method = self._calc_method._current
361 self._express[calc_method] =
self._calc_method._tranf[calc_method](
--> 362
expression)
363 # Derived quantities:
364 self._der = None # list of partial derivatives (to be set by
diff()
/home/michi/GitProjects/sage/local/lib/python2.7/site-packages/sage/manifolds/calculus_method.pyc
in _Sympy_to_SR(expression)
106 # If SR cannot transform a sympy expression this is because it
is a
107 # sympy abstract function
--> 108 a = expression._sage_()
109 # As all sage objects have a ._sage_ operator, they have to be
110 # catched
AttributeError: 'list' object has no attribute '_sage_'
Code hier eingeben...
I'm not sure if tickets of beta issues are welcome.
Best Regards
Michael
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