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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.


22h
revised Approximate the unit ball in an infinite-dimensional Hilbert space, by compact sets?
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22h
revised Approximate the unit ball in an infinite-dimensional Hilbert space, by compact sets?
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Dec
15
revised If $|f_i(x_1) - f_i(x_2)| \leq a$ for all $f_i$'s, does $ | \min_i f_i(x_1) - \min_i f_i(x_2) | \leq a? $
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Dec
1
revised Can a randomized rule induce a random measure on the action space?
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Nov
14
revised Is it true that $ \sup_x (f(x) - g(x)) \geq \sup_x f(x) - \sup_x g(x)? $
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Nov
5
revised Writing clear proofs involving multiple theorems and conditions
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Nov
4
revised Does a Pareto distribution always have variance?
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Nov
4
revised If $\mathrm{E} |X|^2$ exists, then $\mathrm{E} X$ also exists
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Nov
3
revised For $E (X - EX)^2$ to exist, do we need $EX$ to exist and be finite?
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Oct
22
revised Why is this expectation finite?
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Oct
21
revised Coordinates of a vector under a basis in a Hilbert space?
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Oct
16
revised Supremum and union
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Sep
24
revised Equivalent alternative to delta-epsilon formulation of limit?
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Sep
3
revised In composition of two mappings, can the outer mapping access the arguments of the inner mapping?
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Aug
14
revised Is a set of some $m \times n$ matrices a relation?
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Aug
14
revised Is a set of some $m \times n$ matrices a relation?
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Aug
14
revised Is a set of some $m \times n$ matrices a relation?
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Aug
14
revised Is a set of some $m \times n$ matrices a relation?
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Jul
24
revised Is this theorem about soundness or completeness?
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Jul
23
revised Is there no propositional letter in first order logic?
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