7,513 reputation
1934
bio website math.arizona.edu/~nhenscheid
location Tucson, AZ
age 27
visits member for 2 years, 1 month
seen 1 hour ago

Studying for an applied math PhD at the University of Arizona. BS & MS from Western Washington University. When I'm not doing math, I'm climbing rocks.


1d
awarded  Caucus
Dec
18
comment C*-algebras: States?
Functional Analysis by Lax is probably a good place to start.
Dec
11
awarded  Popular Question
Dec
8
awarded  Pundit
Dec
7
answered Is there any “randomness” in a random variable?
Nov
29
awarded  Nice Answer
Nov
21
answered Exponential inequality to Different Bases
Nov
19
comment Range conditions on a linear operator
I'm not so sure...see updated question.
Nov
19
revised Range conditions on a linear operator
added 267 characters in body
Nov
19
asked Range conditions on a linear operator
Nov
12
awarded  Yearling
Nov
3
answered Reference for “Approximation of identity” of a convolution
Nov
3
comment What is a good optimization algorithm/tool for otimization on Partially Ordered set?
Looks like you're looking for this. I've never worked with it so I can't offer any more advice, unfortunately.
Nov
3
comment What is a good optimization algorithm/tool for otimization on Partially Ordered set?
Do you really need this much abstraction or do you have a more specific class of problem in mind that you want to solve?
Nov
3
comment Fourier transform of a Schwartz space function and norm
Since $f$ is Schwartz, all its derivatives will be $L^1$, so Riemann-Lebesgue gives that $\mathcal{F}[f^{(\alpha)}]$ goes to zero for any $\alpha$. The two facts above relate this to decay of $\hat{f}$ and its derivatives, which is needed to prove that $\hat{f}$ is Schwartz.
Oct
10
answered Differentiable L-1 Regularization
Sep
30
awarded  Explainer
Sep
22
comment Why is $\frac 25$ the real part of $\frac{1}{2+i}$?
@Hal it seems mysterious at first, but the trick is simple: we hate nasty things like complex numbers in the denominator. The simplest number $w$ so that $zw$ is real is $\bar{z}$, so we multiply top and bottom by it.
Sep
22
comment Why is $\frac 25$ the real part of $\frac{1}{2+i}$?
Multiply top and bottom by $2-i$.
Sep
17
comment How to master general topology for analysis?
Try an exercise in the new subject, fail miserably. Figure out what's missing, go read, do exercises. Try new exercise again. Talk with peers/professors/etc. Rinse and repeat...mental organization & abstraction comes with experience rather than precognition.