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# 553 Revisions

 Mar30 revised Counter-example to exponential law for locally compact [non-Hausdorff] spaces deleted 123 characters in body Mar20 revised Algebraic tricks like componendo dividendo edited tags Jan17 revised Calculate all the generators in $\mathbb{Z}/61$ edited tags Jan13 revised Summation with Binomial Coefficients, $\sum (-1)^k \binom{m_1}{k} \binom{m_2}{k}$ more descriptive title Jan10 revised The smallest $n> 0$ with the nonzero $n$th Stiefel-Whitney class is a power of 2 when total Stiefel-Whitney class is not trivial. edited tags Jan9 revised Finite summation with binomial coefficients, $\sum (-1)^k\binom{r}{k} \binom{k/2}{q}$ more descriptive title Jan7 revised Binomial coefficients identity: $\sum i \binom{n-i}{k-1}=\binom{n+1}{k+1}$ more descriptive title Jan7 revised Reference for secondary cohomology operations edited tags Jan7 revised Sum concerning Catalan triangle and binomials link to wiki Jan6 revised Cohomology calculation or computation? edited tags Jan6 revised K-theory formulation of the index theorem tags, minor tex tweaks Jan6 revised Closed form for a formula with a summation over $i\binom{n-i}{k-1}$, and combinatorial proof? edited tags Jan5 revised How to proof that $\sum_{i=1}^{2^n} 1/i \ge 1+n/2$ better tex, fixed typo Jan5 revised Binomial Sum Related to Fibonacci: $\sum\binom{n-i}j\binom{n-j}i=F_{2n+1}$ +1 proof, +1 generalization, +1 disclaimer Jan5 revised Inequality involving binomial coefficients edited tags Jan5 revised Does the classifying map of a fibre bundle only depend on the transition functions? edited tags Jan5 revised Is $\mathbb{H}P^\infty$ an H-space or not? edited tags Jan3 revised Show that $\mathbb{R} P^3$ is not homotopy equivalent to $\mathbb{R} P^2 \vee S^3$. edited tags Jan2 revised Generating functions to solve number of integer solution problem edited tags; edited tags Jan2 revised How to prove the equivalence of the two functions? edited tags