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May
22
reviewed Reviewed IMO 2015 Problem 3
Mar
25
reviewed No Action Needed $g(x) = 1/(1+x^2)$ is continuous everywhere epsilon delta approach
Mar
18
reviewed Reviewed a question about division ring and injective modules
Mar
18
reviewed Reviewed Hamming distance of binary strings
Mar
16
revised Trouble understanding purpose of second $($ in $q(x_k(x_{k-1}^i,z_k)$
Expanded reference
Mar
16
suggested approved edit on Trouble understanding purpose of second $($ in $q(x_k(x_{k-1}^i,z_k)$
Mar
16
revised How to obtain the pdf of this transformation of normal random variables?
Shortened title, quoted original problem
Mar
16
suggested approved edit on How to obtain the pdf of this transformation of normal random variables?
Mar
16
reviewed Reviewed How to obtain the pdf of this transformation of normal random variables?
Mar
16
reviewed Reviewed Deriving a Formula From a Simple Artificial Language
Mar
13
comment Is there any criterion when an interger solution of the equation $ax^2-by^2=c$ $(a,b,c\in\mathbb{N})$ exists?
See, for example, mathworld.wolfram.com/DiophantineEquation2ndPowers.html
Feb
26
revised Is there any situation in which a geodesic maximize the path length between two points?
Added image
Feb
26
reviewed Reviewed Is there any situation in which a geodesic maximize the path length between two points?
Feb
26
suggested approved edit on Is there any situation in which a geodesic maximize the path length between two points?
Feb
26
reviewed Reviewed Find all integers $x$, $y$, and $z$ such that $\frac{1}{x} + \frac{1}{y} = \frac{1}{z}$
Feb
5
reviewed No Action Needed how to work out a total % for 2 components worth 60% and 40%
Jan
19
revised What's your favorite proof accessible to a general audience?
Misspelled "Gauss"
Jan
19
suggested approved edit on What's your favorite proof accessible to a general audience?
Dec
19
awarded  Constituent
Dec
15
reviewed No Action Needed $A$ be a $10*10$ matrix with complex entries s.t. all eigenvalues are non negative real and at least one eigenvalue is positive.