I posted this question to the Sage community on Google+ a while back,
but didn't get a response so I'll try here.
I'm getting behavior that seems wrong from deepcopying symbolic expressions:
$ sage
┌────────────────────────────────────────────────────────────────────┐
│ Sage Version 5.12, Release Date: 2013-10-07 │
│ Type "notebook()" for the browser-based notebook interface. │
│ Type "help()" for help. │
└────────────────────────────────────────────────────────────────────┘
sage: s = symbolic_expression( 'a(x)' )
sage: s.substitute_function(
sage.symbolic.function_factory.function('a'),
sage.symbolic.function_factory.function('A') )
A(x)
sage: t = deepcopy( s )
sage: t.substitute_function(
sage.symbolic.function_factory.function('a'),
sage.symbolic.function_factory.function('A') )
a(x)
The symbolic expression no longer handles substitutions correctly.
Please advise me as to whether I'm wrong about this, or how to report it
as a bug.
Thank you,
Lee Worden
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