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seen Apr 21 at 13:33

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Nov
18
comment A Jacobian involving probabilities
Don't the functions have arguments only in $(E(I_1),E(I_2))$ then? Is there any fundamental violation in doing so?
Nov
18
comment A Jacobian involving probabilities
Thanks. I have a question. What is wrong in writing: $f_1(E(I_1),E(I_2))=-\mu E(I_1)+\lambda E(I_2)-\lambda (\rho \sigma_1\sigma_2+E(I_1)E(I_2))=-\mu E(I_1)+\lambda E(I_2)-\lambda(\rho \sqrt{E(I_1)(1-E(I_1))E(I_2)(1-E(I_2))}+E(I_1)E(I_2))$
Nov
17
accepted How to perform a fair coin toss experiment over phone?
Nov
17
asked How to perform a fair coin toss experiment over phone?
Nov
17
revised What is the intuition for using definiteness to compare matrices?
deleted 1 characters in body
Nov
17
asked What is the intuition for using definiteness to compare matrices?
Nov
16
revised A Jacobian involving probabilities
basic
Nov
15
asked A Jacobian involving probabilities
Nov
12
comment Dynamical equations involving step functions
Thanks, but I do not want to move to a discrete system, as I am interested in the rate of convergence.
Nov
12
revised Dynamical equations involving step functions
added 152 characters in body
Nov
11
asked Dynamical equations involving step functions
Nov
4
accepted Is a projector matrix the inverse of itself?
Nov
4
comment Is a projector matrix the inverse of itself?
Thanks all of you. Yes, I have $P=X(X^TX)^{-1}X^T$, where $X$ is full-rank. The counterexamples are illuminating.
Nov
4
comment Is a projector matrix the inverse of itself?
But $tr(P)=rank(P)=k$ for a $k\times k$ projection matrix, right?
Nov
4
asked Is a projector matrix the inverse of itself?
Oct
24
awarded  Autobiographer
Oct
8
answered Which ice cream shop will get the most customers?
Sep
4
comment Is it morally right and pedagogically right to google answers to homework?
Moreover this Googling issue is common to many departments in academia and not restricted to solving math problems alone. A literature student could copy-paste from the Web for a general essay too...
Sep
4
comment Is it morally right and pedagogically right to google answers to homework?
@WillieWong: Thanks for checking this out. I opined so as I thought this question will be a nice complement for this, where a professor seeks ideas on setting questions.
Sep
4
comment Is it morally right and pedagogically right to google answers to homework?
I think this question belongs to academia.stackexchange.com...