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seen May 16 at 0:21

merge delete


Jul
2
awarded  Curious
Mar
18
awarded  Yearling
Feb
25
revised Prime polynomials over GF(q)
adding relevant tag
Feb
25
suggested suggested edit on Prime polynomials over GF(q)
Feb
25
asked co-idempotents: algebraic dual of an idempotent element?
Feb
24
answered Comultiplication of sum
Feb
16
revised dimension of tensor products over a submodule
added 16 characters in body; edited tags
Feb
16
awarded  Tumbleweed
Feb
9
asked dimension of tensor products over a submodule
Jan
26
comment Category of $\textbf{Ring}$.
it's sometimes easier to have a convention that excludes slightly trivial or slightly pathological examples. Dummit and Foote just take a ring to mean something with a unit, they never deal with unit-less rings, and it's extra baggage to carry that around when you aren't using it.
Jan
26
comment Univariate and Matrix Representation of Affine Transformation
the map $\phi$ is implicit in what I'm doing, it's essentially a change-of-basis matrix. if you let $e_i$ be the canonical basis (a column with all 0s except on the i-th row, that's a 1) for $\mathbb{F}^n$, then $\phi : \mathbb{F}^n \to \mathbb{E}^n$ by $e_i \mapsto \{\text{some expression in the t basis I gave}\}$ then it'll do the trick.
Jan
25
comment Univariate and Matrix Representation of Affine Transformation
I'm not 100% sure I'm correct on the last step, but hopefully you see the idea now? :)
Jan
25
revised Univariate and Matrix Representation of Affine Transformation
expanding a lot
Jan
25
comment Application of Category Theory
you might look at these questions: math.stackexchange.com/questions/312605/… and mathoverflow.net/questions/19325/… (heavier maths there)
Jan
25
revised Univariate and Matrix Representation of Affine Transformation
missing a key detail about the finite field.
Jan
25
answered Univariate and Matrix Representation of Affine Transformation
Jan
25
suggested suggested edit on Univariate and Matrix Representation of Affine Transformation
Jan
25
revised Univariate and Matrix Representation of Affine Transformation
grammar, correction of definitions.
Jan
25
suggested suggested edit on Univariate and Matrix Representation of Affine Transformation
Jan
23
asked kernel of maps associated to the root of an irreducible polynomial