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May
21
reviewed Looks OK How can we show that $S^0$ is a manifold?
May
21
reviewed Looks OK Example of Abelian Group of order 2014
May
21
reviewed Approve Equilateral triangle whose vertices are lattice points?
May
21
reviewed Approve Let $G$ be a non-abelian group. Prove that if $G/Z(G)$ is isomorphic to $\Bbb Z_2 × \Bbb Z_2$ then $G$ is isoclinic to dihedral group $D_8$
Apr
29
reviewed Looks OK $\int_{-1}^1 \int_{-1}^1 \sqrt{\frac{1+x-y-xy}{1-x+y-xy}} \, dx\,dy $
Apr
26
revised Question about the definition of “Prefix free”
converse example
Apr
26
revised Question about the definition of “Prefix free”
explain example better2
Apr
26
answered Question about the definition of “Prefix free”
Apr
22
comment Zeilberger's potential proof of Fermat's last theorem.
Can someone clarify what is suppposed to go in the two $\dots$?
Apr
5
reviewed Approve General solution of $y''+y'=0$
Apr
3
reviewed Approve rank of a matrix?
Apr
3
reviewed Approve How can I retain the mathematics that I've supposedly learnt?
Apr
3
reviewed Approve How to represent a number in such a way that no more than 2 consecutive digits are the same?
Apr
3
reviewed Reject A linear basis compatible with a family of subspaces
Apr
3
reviewed Approve Formula for finding the Roots of a cubic polynomial and nature of roots depending on the discreminant
Apr
3
revised Infinitely many $n$ such that $n^2+1$ is squarefree
explain what form
Apr
3
comment How to factor $\frac{27}{125}a^6b^9-\frac{1}{64}c^{12}$
It looks like Wolfram's alternative form isn't the same thing because $\frac{576}{320} \ne \frac{27}{125}$. But it's not at all clear to me what you are trying to do. Do you want to simplify this expression somehow?
Apr
3
revised Questions about partial derivative notation in Evan's PDE book
fix typo
Apr
3
revised Infinitely many $n$ such that $n^2+1$ is squarefree
define the form
Apr
3
reviewed Approve Expectation of inverse of a symmetric matrix with gaussian elements