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33066
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location Moscow, Russia
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visits member for 4 years
seen 2 hours ago

umagon at google mail


Jan
3
revised Jacobi symbol $\left(\frac{(n+1)/2}{n}\right)$
descriptive title; tags
Jan
3
revised what does the “L” in “L-function” stand for?
ref. to the answer
Jan
3
revised If $x=123456789101112131415161718$, then $x\equiv 6\pmod{16}$ and $x\equiv 0\pmod 6$
edited tags; edited title
Jan
2
revised Strehl identity for the sum of cubes of binomial coefficients
added 320 characters in body
Jan
1
revised Ramanujan Notebook Part 1 (1.16): $\sum q^{n^2} = (-q;q^2)_\infty^2(q^2;q^2)_\infty=\frac{(-q;-q)_\infty}{(q;-q)_\infty}$
descriptive title, retag
Jan
1
revised Taking seats on a plane: probability that the last two persons take their proper seats
No titles like 'a-cute-probability-problem-too-long-to-explain-in-title' _please_
Jan
1
revised Higher dimensional analogue of the correspondence between $2$d TQFTs and Frobenius algebras?
edited tags
Jan
1
revised Simple/Concise proof of Muir's Identity
edited tags
Dec
30
revised Cup Product Structure on the Projective Space
more explicit argument in the second part
Dec
30
revised Cup Product Structure on the Projective Space
edited tags
Dec
29
revised Contracting a contractible set in $\mathbb R^2$
descriptive title, tags, minor
Dec
29
revised Exact sequences and (semi) direct product
minor
Dec
29
revised Prove that there is no homomorphism from $\mathbb{Z}_{8} \oplus \mathbb{Z}_{2}$ ont0 $\mathbb{Z}_{4} \oplus \mathbb{Z}_{4}$
edited tags
Dec
28
revised Does a map of spaces inducing an isomorphism on homology induce an isomorphism between the homologies of the loop spaces?
with that typo the answer looked... strange
Dec
28
revised Spectral sequences to involve together two ideals of a ring
added 1 characters in body
Dec
28
revised Splittings of 4 manifolds
tex
Dec
28
revised Relationship between topological and Quillen's K-theory
added 363 characters in body
Dec
28
revised Intuition and Tricks - Crafty Short Proof - Generators, Order of a Cyclic Group - Fraleigh p. 64 Theorem 6.14
edited tags
Dec
28
revised Tricks to Prove Union of Two Subgroups iff One is Contained in the Other - Fraleigh p. 54 - based on Exercise 5.4.5
edited tags
Dec
27
revised Vandermonde-like sum
title (that's not a special case of Vandermonde identity, after all)