ASKSAGE: Sage Q&A Forum - RSS feedhttps://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Mon, 07 Feb 2022 02:58:51 +0100How to define group actions on sagemath?https://ask.sagemath.org/question/60980/how-to-define-group-actions-on-sagemath/Hello everyone, I hope you are well.
I have the following problem and I'm having difficulties to make this implementation in sage.
Problem:
Consider $f \in \mathbb{R}[x,y]$ and $M \in M_{2}(\mathbb{R})$.
How can I implement the $M \cdot f (x,y)=f(M^{-1}(x,y))$ group action in Sage?
I took a look at the link:
- [https://doc.sagemath.org/html/en/reference/coercion/sage/categories/action.html](https://doc.sagemath.org/html/en/reference/coercion/sage/categories/action.html)
but I couldn't understand much.
I thank you for your attention.rafaelMon, 07 Feb 2022 02:58:51 +0100https://ask.sagemath.org/question/60980/