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visits member for 5 years, 3 months
seen 8 hours ago

(formerly user "unknowngoogle", and for a very short time "red herring" but that was a red herring)


8h
comment What is the motivation and purpose of the Floretion group?
The inverse of a defloration? ^__^
8h
comment What is the motivation and purpose of the Floretion group?
"Florenion" would be more similar to "quaternion" etc..
Jun
19
comment If a topological space has vanishing $n$th homology for every possible homology theory, does it have vanishing $n$th homotopy?
See also: mathoverflow.net/questions/57132/…
May
30
comment Coproducts of schemes (“gluing construction”) ?
Yes, of course I meant "coproduct along the maps..." (i.e. pushout of that diagram), not the absolute coproduct.
May
29
revised Loop Spaces as Generalized Smooth spaces or as Infinite dimensional Manifolds?
edited body
May
29
comment Are curves with `fractional points' uniquely determined by their residual gerbes?
"curve with a fractional point removed" - Why "removed"?
May
25
comment Are there examples of non-orientable manifolds in nature?
-1 for lack of imagination :-)
May
21
revised interpolation between Bochner spaces
edited title
May
14
revised Using mirrors to make a non-convex polygon visible from a fixed interior point
(little typo in title)
May
7
comment Action of $\mathbb{CP}^\infty$ on $U(\infty)$
I would (very naively!) have expected an action of $U(\infty)$ on $\mathbb{CP}^{\infty}$ (coming from the action of $U(n+1)$ on $\mathbb{C}^{n+1}$) rather than the other way around. Now I'm curious :)
May
1
comment Finite-space dynamical systems
But.. isn't the Frobenius the identity on points? Despite the nontriviality of the action on regular functions and on cohomology, I'm not sure this qualifies as a "finite dynamical system" for the OP..
May
1
revised Why is there a connection between enumerative geometry and nonlinear waves?
deleted 119 characters in body
Apr
19
revised Nash's proof of De Giorgi-Nash-Moser theorem
(spelling)
Apr
18
revised Making the identification $\tau M\approx TM\oplus (TM\odot TM)$
edited body
Apr
14
awarded  Good Question
Mar
29
asked When does an algebraic space that is a torsor over a scheme have to be a scheme?
Mar
24
comment Which way for reading the proofs?
The OP is a master student in math, but I think the question (and the answer it gets) could be equally interesting for any mathematician
Mar
22
revised Did Grothendieck write about modular forms?
added 13 characters in body
Mar
22
comment Where is a good place to start learning about the Grothendieck-Teichmuller group?
Is the word "algebroic" (perhaps related to... groupoids?) intentional or just a typo? :)
Mar
22
comment When does the sequence of iterates of a rational function converge?
By "rotation", do you mean something conjugate to $z \mapsto e^{i \theta}$ ($\theta$ irrational with $\pi$)?