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Just a layman and slow learner. Thank you for your enlightenment and patience, and for giving me the best memory in my life.


Oct
27
awarded  Popular Question
Oct
27
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25
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Oct
22
revised Why is this expectation finite?
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Oct
22
accepted Coordinates of a vector under a basis in a Hilbert space?
Oct
22
asked matrix representation of the basis transform by Gram-schmidt orthogonalization
Oct
21
comment Coordinates of a vector under a basis in a Hilbert space?
I see. Why is it the solution to the equation?
Oct
21
revised Coordinates of a vector under a basis in a Hilbert space?
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Oct
21
asked Coordinates of a vector under a basis in a Hilbert space?
Oct
21
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Oct
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17
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Oct
17
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Oct
16
comment Expectation and maximum
Thanks. What if it is supremum instead of maximum, and the set of r.v.s can be arbitrarily many (countable or uncountable)?
Oct
16
comment Expectation and maximum
Thanks. what about (2) added in my comment
Oct
16
comment Supremum and union
Both sides are numbers. Edited.
Oct
16
revised Supremum and union
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Oct
16
comment Expectation and maximum
Thanks. (1) the max function has arbitrarily finitely many arguments. How is it convex in its arguments? (2) What if it is supremum instead of maximum, and the set of r.v.s can be arbitrarily many (countable or uncountable)?