Practice problem
Is R[x]/(x2+1)2\mathbb{R}[x]/(x^2+1)^2R[x]/(x2+1)2 isomorphic to C[y]/y2\mathbb{C}[y]/y^2C[y]/y2 as an R\mathbb{R}R-algebra?
(Source: Calvin Deng)
Yes
No
I don't know
Type a concept, like “slope” or “photosynthesis”.