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seen Aug 14 at 18:01

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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
Jan
18
revised Prove $\ker {T^k} \cap {\mathop{\rm Im}\nolimits} {T^k} = \{ 0\}$
correct def of Im
Jan
18
suggested suggested edit on Prove $\ker {T^k} \cap {\mathop{\rm Im}\nolimits} {T^k} = \{ 0\}$
Jan
15
revised when is a ring a free module over a subring?
edited tags
Jan
15
revised when is a ring a free module over a subring?
added 3 characters in body
Jan
15
awarded  Critic
Jan
14
asked when is a ring a free module over a subring?
Jan
14
comment most efficient way to find distinct complimenting subspaces over a finite field
is there an algorithmically efficient way to complete $\{v_{n-k+1},\ldots, v_n\}$ to a basis $\{v_1,\ldots,v_n\}$. Your description solves the problem wonderfully (though I no longer need such a solution!), but I might be too silly to see an way to complete the basis.
Jan
14
revised most efficient way to find distinct complimenting subspaces over a finite field
fixed error in denom.
Jan
14
comment most efficient way to find distinct complimenting subspaces over a finite field
you're correct, my bad. changed question.
Dec
31
comment Is there a discrete version of non-commutative geometry (yet)?
you might be interested in a paper from Majid arxiv.org/abs/1011.5898 Noncommutative riemannian geometry on graphs. This is not NCG in the manner of connes, though.
Dec
20
asked most efficient way to find distinct complimenting subspaces over a finite field
Dec
15
awarded  Organizer
Dec
15
revised the split of two quantum dice
not quantum groups.
Dec
15
suggested suggested edit on the split of two quantum dice
Dec
9
asked What's the connection between irreducible polynomials and fixed-frobenius elements in a finite ring?
Dec
9
accepted finding fixed points of frobenius endomorphism of a ring of char > $p$ (not a domain)
Dec
9
comment finding fixed points of frobenius endomorphism of a ring of char > $p$ (not a domain)
this is a very good answer. but it leaves me with a lot of nagging questions: why does the number of cycles = the number of distinct irreducible factors of $x^{p^n} -x$? Why does the number of cycles of length $d$ = the number of such factors of degree $d$? I suppose these things deserve separate questions and I should accept your answer - is that the proper etiquette here?
Nov
28
revised finding fixed points of frobenius endomorphism of a ring of char > $p$ (not a domain)
edited body