Tim

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A layman and slow learner. Thanks for your enlightenment and patience!

It is dark again. I am scared.

	8,087 reputation	bio	website		visits	member for	2 years, 9 months
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May 3	revised	When is a matrix congruent to a diagonal matrix and how to find the congruent transformation? added 80 characters in body
May 3	asked	When is a matrix congruent to a diagonal matrix and how to find the congruent transformation?
May 3	asked	On $F(X^−)$ where $F$ is cdf of $X$.
May 3	asked	relation between these two random variables?
May 3	asked	Is Pearson's correlation defined when one random variable has zero variance?
May 1	comment	Definitions of K-L divergence based on likelihood ratio and on R-N derivative Thanks, do you know a definition that can generalize both?
May 1	comment	Definitions of K-L divergence based on likelihood ratio and on R-N derivative Thanks, that makes sense. In the first definition, $P$ may not be absolutely continuous to $Q$, isn't it? So the second definition doesn't generalize the first one?
May 1	asked	Definitions of K-L divergence based on likelihood ratio and on R-N derivative
Apr 28	asked	Probability integral transform: Is it integral transform? Can it be for discrete distribution?
Apr 28	accepted	What does $\{(x_1, x_2, x_3) \in\mathbb R^3: x_3 \leq x_2 \leq x_1 \}$ look like?
Apr 28	accepted	Is a parameterization defined to be surjective and/or injective?
Apr 28	asked	What does $\{(x_1, x_2, x_3) \in\mathbb R^3: x_3 \leq x_2 \leq x_1 \}$ look like?
Apr 28	awarded	Popular Question
Apr 28	comment	Is a parameterization defined to be surjective and/or injective? Thanks! (1) So you are talking about the case when a parameterization needs more than one mappings to cover the manifold, right? If a parameterization only needs one mapping, then it must be surjective, is it? (2) why is every mapping in a parameterization injective? (3) in other mathematical branches other than manifold, is a parameterization (if there is only one mapping in it) of some object defined to be surjective? How about injective?
Apr 28	comment	Is a parameterization defined to be surjective and/or injective? Thanks, (1) why "unless the manifold in question is an open set of Rn"? (2) Do you mean it may not be surjective? Why is it?
Apr 28	asked	Is a parameterization defined to be surjective and/or injective?
Apr 26	accepted	Generalization of metric that can induce ordering
Apr 26	comment	Generalization of metric that can induce ordering Thanks, this one seems to be the one I am looking for. Is there a name for such $\delta$?
Apr 26	asked	Generalization of metric that can induce ordering
Apr 24	awarded	Popular Question