I am writing a calculator for various 'q' quantities, and often find that I need to manipulate symbols more flexibly. For example, I have to deal with the expression
( q + q^(-1) ) ^ (1/2) ------------------ (*) But currently I could not find any way to achieve this. A naive attempt gives a failure: sage: q = Frac(ZZ['q']).gen() sage: q ^ (1/2) ---> ValueError: not a 2nd power sage: power(q, 1/2) NotImplementedError: non-integral exponents not supported Leave alone the expression I need! Indeed, one might have to define a larger parent for the expression (*) to live in. So this might require implementing a new algebraic structure. If that's the case, I'm willing to write it. The problem is that implementing a new structure seems a bit complicated to me.. I might take some time, and need some guides. Thank you so much! PS. Weirdly enough, exp(sin(q)) is already implemented as in the class <class 'sage.symbolic.expression.Expression'>. Perhaps what I need might not be too hard to implement? -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/a8d98cd1-03f6-4c86-8248-3733d697ca59%40googlegroups.com.
