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visits member for 4 years, 5 months
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Jan
13
revised Closed form for $\sum_{k=1}^{\infty} \zeta(2k)-\zeta(2k+1)$
edited tags
Jan
12
revised A (somewhat) conceptual proof that the boundary of a fundamental class of a manifold with boundary goes to a fundamental class?
added 369 characters in body
Jan
11
revised A (somewhat) conceptual proof that the boundary of a fundamental class of a manifold with boundary goes to a fundamental class?
diagram updated (clearer, perhaps)
Jan
11
revised A (somewhat) conceptual proof that the boundary of a fundamental class of a manifold with boundary goes to a fundamental class?
a commutative diagram added
Jan
11
revised Are groups $\operatorname{Aut}_{\mathbb{Q}}(\overline{\mathbb{Q}})$ and $\operatorname{Aut}_{\mathbb{Q}}(\mathbb{R})$ abelian?
descriptive title
Jan
11
revised Is $\mathbb Q(\sqrt2)$ the fixed field of some automorphism of $\overline{\mathbb Q}$?
descriptive title
Jan
10
revised How can one intuitively explain the statement $\sum\limits_{i=1}^n i \rightarrow -\frac{1}{12}$
edited tags
Jan
9
revised Is there any mathematical or physical situations that $1+2+3+\ldots\infty=-\frac{1}{12}$ shows itself?
edited tags
Jan
9
revised Finding the limit of $\left(\dfrac{a^\frac{1}{n}+b^\frac{1}{n}+c^\frac{1}{n}}{3}\right)^n$
descriptive title
Jan
8
revised There exists a power of 2 such that the last five digits are all 3's or 6's. Find the last 5 digits of this number
descriptive title
Jan
6
revised Fundamental group of projective plane is $C_{2}$???
edited tags
Jan
6
revised Question about a nested radical identity of Ramanujan involving $\sqrt 5$
edited tags
Jan
6
revised Infinite radical. How to show it converges to three?
edited tags
Jan
6
revised How to prove $\sqrt{5+\sqrt{5+\sqrt{5-\sqrt{5+\sqrt{5+\sqrt{5+\sqrt{5-\cdots}}}}}}} = \frac{2+\sqrt 5 +\sqrt{15-6\sqrt 5}}{2}$
edited tags
Jan
6
revised $\operatorname{Hom}(f^*F, G) = \operatorname{Hom}(F, f_*G)$
tex in title
Jan
6
revised How to prove that $\sum_{i=0}^{a}\frac{i\binom{a+b-c-i}{a-i}\binom{c+i-1}{i}}{\binom{a+b-1}{a}}=\frac{ac(a+b)}{b(b+1)}$
formatting, tags
Jan
5
revised Finite subgroups of SO(3) are defined by ramified coverings of Riemann spheres
minor tex/formatting
Jan
5
revised Value of Riemann zeta function at $-1$
more descriptive title, edited tags
Jan
5
revised Sum of reciprocals of binomial coefficients
more descriptive title
Jan
4
revised Euclidean Algorithm - harder than usual
edited tags