I was responding to Edwin's comment about "X^2 + 1", in which I am provisionally interpreting "1" as the identity matrix in the relevant ring. On Thu, Nov 1, 2018 at 1:13 PM Dan Asimov <dasimov@earthlink.net> wrote:
The context I've been asking about has the constant term of the polynomial be any constant matrix in whatever ring M is considered.
<< P(X) = X^k + A_(k-1) X^(k-1) + ... + A_1 X + A_0
(Not sure if this answers the question.)
—Dan
Allan Wechsler wrote: ----- When we say something like "X^2 + 1" does the 1 mean the identity matrix? In general, does a ring element in this context mean that ring element times the identity matrix? -----
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