dictionary substitution for elements of ExteriorAlgebra

asked 2015-01-11 08:10:29 -0500

daniele gravatar image

updated 2015-07-31 10:57:53 -0500

FrédéricC gravatar image

As a newbie for sage, I don't understand how to perform substitution for elements in, e.g., an ExteriorAlgebra.

For example, i'm trying:


and i'd expect "y", instead getting "x". It seems substitution in this case is not possible... So, where am i getting wrong, and what is the correct way to perform such an operation?


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