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visits member for 3 years, 8 months
seen Apr 14 at 9:25

Apr
19
answered Manipulating ergodic Markov chains in order to make them non-ergodic
Mar
25
comment Prove that there is a number $y \in \mathbb{R}$ in $[0,1]$ st $f(y) = y$
(It wasn't me…)
Mar
25
comment Prove that there is a number $y \in \mathbb{R}$ in $[0,1]$ st $f(y) = y$
Is it better to leave Daniel's hint or give the answer?
Mar
23
comment Pseudo Proofs that are intuitively reasonable
@QiaochuYuan: Yes, it's a nice example of that. Thanks.
Mar
23
comment Pseudo Proofs that are intuitively reasonable
I'm just curious: isn't it enough to show that the map is injective, and that $[0,1]^2$ is no smaller than $[0,1]$ because $[0,1] \times \{0\}$ is the same size?
Feb
27
revised Proof of a simple property of real, constant functions.
added 1 characters in body
Feb
26
answered Proof of a simple property of real, constant functions.
Feb
26
revised Proof of a simple property of real, constant functions.
align env.
Feb
26
suggested suggested edit on Proof of a simple property of real, constant functions.
Jan
20
awarded  Enthusiast
Jan
17
accepted multivariate derivative of integrals
Jan
17
asked multivariate derivative of integrals
Dec
27
accepted Sufficient statistic for product of $\Gamma(x + a_i)$
Dec
22
comment How to remember the trigonometric identities
You can use the rotation matrix trick to get the angle addition formulas by using a different variable for each matrix.
Dec
6
revised Integrating $\int \frac{1}{1+e^x} dx$
added 22 characters in body
Dec
6
awarded  Popular Question
Dec
6
suggested suggested edit on True or false? $x^2\ne x\implies x\ne 1$
Nov
13
revised Beta function derivation
added 8 characters in body
Oct
18
revised What is combinatorics?
copyedited
Oct
18
suggested suggested edit on What is combinatorics?