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Dec
31
reviewed No Action Needed How to study math to really understand it and have a healthy lifestyle with free time?
Dec
31
reviewed No Action Needed Question about the meaning of expression in cryptography
Dec
31
revised Cardinality of a power set
Added latex.
Dec
31
revised Cardinality of a power set
added 4 characters in body
Dec
30
reviewed Approve How do I show that the pythagoras theorem holds for the specific case of an “isosceles right triangle”?
Dec
30
reviewed Looks OK Probability of event on Poisson process arrival
Dec
30
reviewed No Action Needed Itô's lemma to solve the SDE
Dec
30
reviewed Reviewed Polar plane curves algebraic
Dec
30
comment Polar plane curves algebraic
Hi BJ Henderson. Welcome to MSE. You might want to consider using latex coding to make your responses more readable. In the current format the arguments are not very easy to follow.
Dec
29
reviewed Approve Show $\lim\limits_{n\to\infty} n \ln\left(1-\frac{1}n\right) = -1$
Dec
29
comment show that the interval of the form $[0,a)$ or $(a, 1]$ is open set in metric subspace $[0,1]$ but not open in $\mathbb R^1$
Note that if $x=0$, you are not able to consider the case $x\in (a,1]$, so you may just take $r=a$. Also if $x\neq 0$, note that $|a-x|=|x-a|$. So this shortens also a little bit. And how is it possible that $(x-r,x+r)\subset (0,x)$ or $(x,1)$?
Dec
29
revised show that the interval of the form $[0,a)$ or $(a, 1]$ is open set in metric subspace $[0,1]$ but not open in $\mathbb R^1$
edited body; edited title
Dec
29
revised Is $\sum_{k=m+1}^{n} \frac{1}{2^k} < \frac{1}{2^m} $ true in general?
added 4 characters in body; edited tags
Dec
29
reviewed No Action Needed Boyd & Vandenberghe, question 2.31(d). Stuck on simple problem regarding interior of a dual cone.
Dec
29
reviewed No Action Needed What are matrix coefficients in linear algebra?
Dec
29
reviewed No Action Needed Boyd & Vandenberghe, question 2.31(d). Stuck on simple problem regarding interior of a dual cone.
Dec
28
reviewed Looks OK counterexample for the fixed point theorem
Dec
28
reviewed Approve Help me matlab,find $f(x)$ from $f(g(x))$…thanks a lot!
Dec
27
reviewed No Action Needed Calculating the index of a subgroup in a free group
Dec
27
reviewed No Action Needed Gaussian prior from feature to input space