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2023-06-17 12:04:25 +0100 asked a question Python class for the ring $\mathbb{Z}[\sqrt{d}]$ ?

Python class for the ring $\mathbb{Z}[\sqrt{d}]$ ? How to define and use the ring $\mathbb{Z}[\sqrt{d}]$ in Python? Is t

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2020-07-30 01:38:39 +0100 asked a question What construct for cyclic group?

What is the proper Sage construct for working with cyclic group $\mathbb{Z} / n \mathbb{Z}$ ? I cannot see any in group theory manual page. Yes, we have Integers(n), but it cannot be asked like a group about, say, subgroup().