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2d
answered Can't argue with success? Looking for “bad math” that “gets away with it”
2d
comment Can't argue with success? Looking for “bad math” that “gets away with it”
It's possible, though, that Kepler had derived the result by some correct but circuitous method, then attempted to clean up and simplify the derivation for publication and failed.
2d
comment Can't argue with success? Looking for “bad math” that “gets away with it”
math.stackexchange.com/questions/701822/…
Sep
16
comment Efficient algorithm to find a minimum spanning set for a given vector.
Let $n = |W|$, and consider the linear map $k^n \to W$ where $e_i \mapsto w_i$. The preimage of $\{v\}$ under this linear map is some $(n-m)$-plane, so the question amounts to the following: given a linear subspace of affine space, find a point which has as many coordinates zero as possible.
Sep
9
revised Is there anywhere some explicit Bruhat decompositions are written down?
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Sep
9
revised Is there anywhere some explicit Bruhat decompositions are written down?
edited tags
Sep
9
asked Is there anywhere some explicit Bruhat decompositions are written down?
Sep
4
comment The metric identification of a pseudometric on $C(\mathbb{I})$
Okay, so let's say $x_0 = 0$ for convenience. Which functions are equivalent to $\sin(x)$, say?
Sep
4
comment The metric identification of a pseudometric on $C(\mathbb{I})$
Well, the important part is what $\sim$ is... do you know that?
Sep
4
comment The metric identification of a pseudometric on $C(\mathbb{I})$
Do you know the definition of the metric identification?
Sep
4
comment The metric identification of a pseudometric on $C(\mathbb{I})$
Well, how many distinct points will there be in the metric identification?
Sep
3
comment Encyclopedia of integers
Wikipedia has articles for many positive integers that include facts like that.
Sep
3
answered What is the number of integer coordinates on a line segment?
Sep
3
answered homeomorphism classes of compact surfaces with addition operation is a monoid
Sep
2
accepted Are there any integral domains in which no nonzero prime ideal is finitely generated?
Sep
2
asked Are there any integral domains in which no nonzero prime ideal is finitely generated?
Sep
1
comment Are there any commutative rings in which no nonzero prime ideal is finitely generated?
Man, I'm pretty sure I've asked questions before where that was the relevant example. I just need to get that ring tattooed on my arm or something...
Sep
1
accepted Are there any commutative rings in which no nonzero prime ideal is finitely generated?
Sep
1
asked Are there any commutative rings in which no nonzero prime ideal is finitely generated?
Aug
29
revised Abstract Algebra Book Request
added 91 characters in body