Steve Huntsman
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 Apr 26 comment Lyapunov exponents of Lorenz63 and Lorenz96 system The positive Lyapunov exponent of Lorenz-63 is at least $2^{1/29}$, see section 4 of dx.doi.org/10.1016/S0764-4442(99)80439-X -- PDF at www2.math.uu.se/~warwick/main/papers/comptes.pdf Apr 21 comment Languages beyond enumerable In between algebraic and computable reals, we might insert periods: en.wikipedia.org/wiki/… Apr 21 comment Are some numbers more irrational than others? In between algebraic and computable reals, we might insert periods: en.wikipedia.org/wiki/… Apr 19 comment What are the central points of a semi-nice region in the plane? @RobertIsrael- My casual physical intuition led me to (essentially) expect the minima to be always determined by the most rapidly decaying eigencomponent. But I certainly doubt that now in light of your comment. On the other hand, perhaps a short-time limit would work here. Apr 18 revised What are the central points of a semi-nice region in the plane? added 3 characters in body Apr 18 comment What are the central points of a semi-nice region in the plane? @IlyaBogdanov- Either of the two methods I propose (eroding from the boundary or using the heat equation) would isolate a central circle lying entirely within the annulus. Apr 18 asked What are the central points of a semi-nice region in the plane? Apr 14 comment Conjugacy classes of $SL_2(Z)$ Apr 6 comment Famous results about the value of a given limit assuming it exists See section 2 of cs.toronto.edu/~yuvalf/CLT.pdf (also perhaps books.google.com/books?id=Q4XzBwAAQBAJ as mentioned in section 10 of the PDF), from which I quote: "the real content of the central limit theorem is that convergence does take place. The exact form of the basin of attraction is deducible beforehand - the only question is whether summing up lots of independent variables and normalizing them accordingly would get us closer and closer to the only possible limit, a normal distribution with the limiting mean and variance." Mar 30 comment Is the Mendeleev table explained in quantum mechanics? pnas.org/content/97/1/28.full Mar 19 comment Applications of algebraic geometry to machine learning books.google.com/books/about/… Mar 19 comment Unexpected Occurences of the Sierpinski Triangle Seemed to me like it's on almost every page of Wolfram's book Mar 18 comment Algorithm to calculate moments of uniform distribution on convex polyhedra math.ucdavis.edu/~latte Mar 16 comment Constructing a polygon of $n$ facets from a set of positive values representing the length of the facets As an aside, projecteuclid.org/euclid.jdg/1214457034 discusses the relevant moduli space Mar 12 comment Can I derive the Boltzmann distribution by an invariance argument? @DanPiponi -fixed. Mar 12 revised Can I derive the Boltzmann distribution by an invariance argument? Fixed dead link Mar 10 accepted Generalizing series-parallel digraphs with feedback Mar 9 asked Generalizing series-parallel digraphs with feedback Feb 26 answered Applications of the Cayley-Hamilton theorem Feb 24 comment Concrete examples of ODEs/PDEs arising in proofs in Complexity Theory and other subfields of CS The graph Laplacian is one construct that bridges computer science and differential equations in a way that might be unexpected...until one realizes why it's a Laplacian