[isabelle-dev] HOL/Computational_Algebra/Polynomial.thy

Florian Haftmann florian.haftmann at informatik.tu-muenchen.de
Thu Jun 28 18:03:48 CEST 2018

> Is it right for this theory to base itself on HOL.Deriv rather than Complex_Main?
> Larry
> section ‹Polynomials as type over a ring structure›
> theory Polynomial
> imports
>   HOL.Deriv
>   "HOL-Library.More_List"
>   "HOL-Library.Infinite_Set"
>   Factorial_Ring
> begin

I don't think so, especially the combination of theories from
HOL-Library with a non-canonical theory entry is weird.

I am unable to tell on the spot how this has emerged.  Are there any
suspicious things when HOL.Deriv is replaces by Complex_Main?

I guess that theory uses some analytical results and hence cannot build
on Main alone.



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