Reputation
922
Top tag
Next privilege 1,000 Rep.
Create new tags
Badges
2 15
Newest
 Yearling
Impact
~14k people reached

  • 0 posts edited
  • 1 helpful flag
  • 36 votes cast
Apr
8
revised what's the difference between a rational number and an irrational number?
added 1 character in body
Apr
8
comment what's the difference between a rational number and an irrational number?
@gideon Well thanks, especially since this caused me to look back at the answer and correct an error.
Mar
7
comment Complex distributions - what are the appropriate test functions?
@StephenMontgomery-Smith I wouldn't be surprised in the least, but I'd prefer to defer final judgement until I can be a bit more certain there's a mistake. Perhaps someone more familiar with CFT will someday have something definitive to say about this.
Mar
7
comment Complex distributions - what are the appropriate test functions?
@StephenMontgomery-Smith Yeah I'm strongly inclined to agree -- I have never heard of analytic test functions either. Nonetheless, the calculation I wrote down appears in at least the most well-known, standard conformal field theory text, so I'd like to make sense of it somehow.
Mar
6
asked Complex distributions - what are the appropriate test functions?
Feb
20
comment Proving that a family of functions limits to the Dirac delta.
+1: This is great, thank you. I'm still hoping, however, that someone will be able to tell me how to make the approach that uses complex analysis work as a matter of interest.
Feb
20
revised Proving that a family of functions limits to the Dirac delta.
added 92 characters in body
Feb
19
asked Proving that a family of functions limits to the Dirac delta.
Jan
19
awarded  Yearling
Dec
8
awarded  Caucus
Nov
19
comment Pure Point Spectrum implies Spanning Eigenfunctions
I think this would more appropriately be asked on math.SE.
Nov
2
comment Gradient of a function with base vectors
Isn't this more appropriate for math.SE?
Oct
20
revised Big O notation for complex-valued functions of a real variable
edited body
Oct
19
comment What is the dimension of the vector space of functions $f:\mathbb R\to\mathbb R$?
Wonderful! Thanks Asaf.
Oct
19
accepted What is the dimension of the vector space of functions $f:\mathbb R\to\mathbb R$?
Oct
19
comment What is the dimension of the vector space of functions $f:\mathbb R\to\mathbb R$?
Wow ok $2^{2^{\aleph_0}}$ it is then. Pretty monstrous (to a non-set-theory aficionado at least). That's a very nice last equation you wrote. Does it have a special name? Where in standard books would I find such wonderful gems?
Oct
19
asked What is the dimension of the vector space of functions $f:\mathbb R\to\mathbb R$?
Sep
27
comment How are eigenvectors/eigenvalues and differential equations connected?
Great answer btw. Would you happen to know of any good references that treat ODEs heavily using linear-algebraic language as in this answer? In particular, a text which discusses Jordan normal form in this context as you allude to would be useful. I'll be teaching a math methods for physics class, and I'd find such a reference very useful.
Sep
23
comment How are eigenvectors/eigenvalues and differential equations connected?
Shouldn't $e^{\lambda y}$ read something like $e^{\lambda t}$ instead?
Sep
10
awarded  Revival