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visits member for 2 years, 6 months
seen Sep 8 at 17:01

Aug
5
comment Use of Strassen's algorithm
@TysonWilliams: BLAS does use Strassen in DGEMMS*. But Daniel's description of why to avoid that algorithm for floating-point calculations is apt.
Jul
2
awarded  Curious
May
28
awarded  Nice Question
May
22
comment How do I get Mathematica to return a function call unevaluated?
Hah! So at least I wasn't too far off the mark, just careless. Thanks for pointing this out!
May
22
awarded  Yearling
May
22
comment How do I get Mathematica to return a function call unevaluated?
@gpap: What do you get for AlgebraicQ /@ {7, Pi, Pi + E, I}?
May
22
comment How do I get Mathematica to return a function call unevaluated?
@gpap: I can't imagine how, honestly. I mean, clearly that should work if I gave it a non-Real, but for a Real it should return Element[x, Algebraics] because that's what you're telling it to return. Very strange, I'd be interested to learn more about this case.
May
22
revised How do I get Mathematica to return a function call unevaluated?
final answer
May
22
revised How do I get Mathematica to return a function call unevaluated?
flesh out
May
22
accepted How do I get Mathematica to return a function call unevaluated?
May
22
comment How do I get Mathematica to return a function call unevaluated?
@m_goldberg: The built-in AlgebraicIntegerQ has precisely the same behavior I'm describing. (How could a function possibly guarantee to return True or False when the answer is not even known to mathematicians?)
May
22
revised How do I get Mathematica to return a function call unevaluated?
add image
May
22
asked How do I get Mathematica to return a function call unevaluated?
May
22
comment Constructible numbers
Sorry, confusing it with something else. :x
May
22
comment Constructible numbers
I'm not sure what you mean -- surely for every integer $n>0$ there is a constructible number with minimal polynomial of degree $n$?
May
21
comment Constructible numbers
This is interesting (+1) but I was actually hoping for something that could tell me, "no, this number is not constructible" which your approach can't.
May
20
asked Constructible numbers
May
20
revised Solving Thue equations
should not take so long
May
14
revised Solving Thue equations
Tzanakis-de Weger algorithm
May
12
revised Solving Thue equations
added 60 characters in body