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After doing nearly all the coursework for a Ph.D. in math, I then did all the coursework for a Ph.D. in statistics and completed that degree.

Nov
10
awarded  Popular Question
Nov
10
revised Arctangents and the golden ratio
added 9 characters in body
Sep
30
comment Do these properties characterize differentiation?
I wonder what nice sets of conditions that include shift-equivariance are satisfied only by differentiation?
Sep
30
awarded  Explainer
Sep
24
awarded  Autobiographer
Jul
20
comment When is the earliest large prime gap also the latest large prime gap?
What do you mean by saying that the lim sup of the relative size is decreasing? The relative size is $(p_{n+1}-p_n)/p_n$. That is a sequence, and it has a lim sup, and its lim sup is a number, not a sequence. What would it mean to say a number is decreasing? (And I'll be very surprised if you tell me the lim sup is not $0$.)
Jul
20
revised Positively invariant set
deleted 6 characters in body
Jul
20
comment When is the earliest large prime gap also the latest large prime gap?
I notice that mathoverflow has no "prime gaps" tag. Stackexchange has that. Should that be created?
Jul
20
revised When is the earliest large prime gap also the latest large prime gap?
added 1046 characters in body
Jul
20
comment When is the earliest large prime gap also the latest large prime gap?
@TheMaskedAvenger : I'm not seeing that your comment actually answers the questions. If I'm not mistaken, in the case of $113$, where the relative gap size, $(127-113)/113=14/113\approx 0.12389\ldots$ is bigger than any that occurs later. I have to suspect that "bigger than average" means bigger than some "average" that decreases as $n$ grows.
Jul
20
asked When is the earliest large prime gap also the latest large prime gap?
Jul
17
awarded  Necromancer
Jul
15
comment Magic trick based on deep mathematics
So far I've read only the abstract. It strikes me that the assistant can choose not only one of 24 orders in which to hand you the four cards, but also which four to give you. That's additional information. But I still don't know how it's going to work.
Jul
14
revised Spencer's “six standard deviations” theorem - better constants?
added 4 characters in body
Jul
6
revised intersection of the unit cube and a hyperplane containing the main diagonal
added 4 characters in body
Jul
5
revised Mathematicians who made important contributions outside their own field?
edited body
Jul
5
comment Mathematicians who made important contributions outside their own field?
I was surprised to see the date of his degree was 1926, since he was publishing a lot of stuff long before that.
Jul
5
comment Mathematicians who made important contributions outside their own field?
"Neither advanced their subjects in important ways, but the second showed a firm grasp of an astonishing range of modern mathematics." Grammatically grating. I'd have written "Neither advanced its subject in an important way".
Jul
5
comment Mathematicians who made important contributions outside their own field?
I was about to say that unfortunately I "read somewhere" that this was the case. What I've got now is this: msh.revues.org/3631?file=1
Jul
5
answered Mathematicians who made important contributions outside their own field?