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visits member for 4 years, 4 months
seen Sep 16 at 3:39
Note. I am less likely to respond to questions posed anonymously.

Oct
15
awarded  Nice Answer
Sep
24
awarded  Autobiographer
Jul
15
awarded  Nice Answer
Jul
13
answered How does one justify funding for mathematics research?
Jun
2
awarded  Yearling
Oct
19
awarded  Necromancer
Sep
13
comment What is the expected number of random numbers (generated uniformly) such that their sum of numbers exceeds one?
This question was Problem A3 of the 1958 Putnam Competition (and as such is not research-level mathematics).
Sep
13
awarded  Informed
Aug
20
answered Proof a Weyl Algebra isn't isomorphic to a matrix ring over a division ring
Jul
29
answered Subgroups of finite index of fields
Jun
25
awarded  Revival
Jun
2
awarded  Yearling
Jul
6
comment How do you present a non-existence theorem?
This story implicitly answers the problem of the student who shrugs upon hearing the theorem on bounded entire functions. By the time it occurs in a class it's very natural, but presented with it cold, the reaction of any student of normal inquisitiveness would be astonishment and an attempt at a counterexample. A student who isn't excited about celebrated classical results is perhaps best advised to find a field of study more to his liking. Incidentally, a result that has allured many a student into mathematics is, so to speak, a non-existence non-theorem: the continuum hypothesis.
Jul
6
comment How do you present a non-existence theorem?
My first reaction on seeing the title of this question was to recall Rota's "Ten Lessons I Wish I Had Been Taught": completely erase the blackboard, begin writing in the upper left corner, ....
Jun
17
awarded  Nice Answer
Jun
13
answered When is a topological group Hausdorff (separated)?
Jun
2
awarded  Yearling
Feb
17
awarded  Nice Answer
Aug
27
comment When a group ring is a local ring
For the general problem, can you see why the augmentation ideal is nilpotent?
Jul
30
comment How do you pronounce “Hartshorne”?
The poor devils could follow Kiran Kedlaya's example: mit.edu/~kedlaya/about-my-name.html