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Jul
24
revised question on sigma-fields
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May
27
comment What are the most misleading alternate definitions in taught mathematics?
Resolve it how, short of a serious digression into conditional expectation?
Apr
6
awarded  Editor
Apr
6
revised Can you explain a step in an expectation maximization algorithm in a Nature article?
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Apr
6
revised Can you explain a step in an expectation maximization algorithm in a Nature article?
added 409 characters in body; deleted 9 characters in body
Apr
6
answered Can you explain a step in an expectation maximization algorithm in a Nature article?
Jan
28
comment How many trial picks expectedly sufficient to cover a sample space?
The r=1 case is just the coupon collector's problem - en.wikipedia.org/wiki/Coupon_collector%27s_problem. Look at the 'calculating the expectation' section of the linked page for a much simpler and more elegant way of getting your result.
Jan
11
comment question on sigma-fields
Don't we need the sequence Y_n to converge to Y pointwise, not just almost surely, since we want Y = f(X) pointwise, not just almost surely? Of course, this isn't a problem for the proof, since such a sequence exists. Also, a way to avoid the distinction between when lim_n f_n exists and when it doesn't is to just take f = limsup_n f_n.
Dec
11
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Nov
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awarded  Teacher
Nov
20
answered question on sigma-fields
Nov
20
asked order statistics for components of a random unit vector