ASKSAGE: Sage Q&A Forum - Latest question feedhttp://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Sun, 17 Dec 2017 04:36:39 -0600how to define Skew Polynomial Ring over Cyclotomic Fieldhttp://ask.sagemath.org/question/40199/how-to-define-skew-polynomial-ring-over-cyclotomic-field/how to define Skew Polynomial Ring in x over Cyclotomic Field of order 7 and degree 6 twisted by zeta7 |--> zeta7^2
when i execute those commands
K = CyclotomicField(7)
sigma = K.hom([K.gen()^2])
S.< x > = K['x',sigma]
I have this message error
> AssertionError: coercion from
> Cyclotomic Field of order 7 and degree
> 6 to Skew Polynomial Ring in x over
> Cyclotomic Field of order 7 and degree
> 6 twisted by zeta7 |--> zeta7^2
> already registered or discoveredBouzidi AhmedSun, 17 Dec 2017 04:36:39 -0600http://ask.sagemath.org/question/40199/