Reputation
90,704
Next tag badge:
96/100 score
21/20 answers
Badges
14 85 170
Impact
~804k people reached

9h
reviewed Close Rank of product of a matrix and its transpose
9h
reviewed Looks OK Determining the angle between (sum of two vectors) and the (cross product of two vectors)
9h
reviewed Looks OK Dot product in bilinear form (Euclidean space)
11h
reviewed Close If $\lim_{n\to \infty}a_n = a\in \mathbb{R}$ . Prove that $\limsup_{n\to \infty}a_n x_n=a\limsup_{n\to \infty}x_n$ .
11h
reviewed Leave Open Expected value of the larger of two claims
11h
reviewed Close For a $p$-group $G$, and $H \le G$, if $G=H G^\prime$, then $H=G$
11h
answered Convergence of multiple integral in $\mathbb R^4$
12h
reviewed Close problem on standard error in sample data
12h
reviewed Close Prove that for all positive integers $n$, $2^1+2^2+2^3+…+2^n=2^{n+1}-2$
12h
reviewed Close A question on basic combinatorics.
12h
reviewed Close Expectation of a discrete variable
12h
reviewed Leave Open definition of the spectral measure for the multiplication operator?
12h
reviewed Leave Open Where is the following sequence convergent/absolute convergent?
12h
revised Where is the following sequence convergent/absolute convergent?
added 1 character in body
12h
reviewed Close Conjugacy classes of solvable groups
12h
reviewed Looks OK How do I prove that the limit of $\frac{x^2 y }{x^2 + y^2} = 0$?
12h
reviewed Looks OK Meaning of the Maximal Interval of existence
12h
reviewed Looks OK $\int_0^{\frac{1}{2}}\cot(\pi x)\sin(2\pi nx)\cos(2\pi mx)\,dx$
12h
reviewed Looks OK Basis of a $2\times2$ matrix
12h
reviewed Approve How to draw marginal density function using R?