7,513 reputation
2831
bio website supermath.info
location Virgina USA
age 36
visits member for 2 years
seen 25 mins ago

I'm interested in mathematics which is used to frame physical theory. I guess that means I'm at least a little interested in just about anything.

Currently I'm trying to understand Cartan's Method of moving frames as it applies to various classification questions of low-dimensional geometry.

I also have interest in superanalysis and certain problems of hypercomplex analysis.

More generally, I'm just looking for interested students who want to exceed the status-quo of undergraduate mathematics. Ideally, our interests overlap.


Apr
30
revised Sturm Liouville with periodic boundary conditions
added 65 characters in body
Apr
27
comment Sturm Liouville with periodic boundary conditions
@rajb245 I think either 3,4 or 5-th editions have this Chapter 11. Maybe 6,7,8 are quite different, I'm not sure, I only have up through the 5-th. An, as you say, I don't think $\lambda = 2$ is correct because that has no solutions as you correctly derived ( I did the same, this is why I've posted the question ).
Apr
26
comment Product rule for differential forms?
actually, for $d(F\omega)$ we find $d(F\omega) = dF \wedge \omega + F \wedge d\omega$ since there is no minus in the form-product rule when we hit the function first with $d$. The order of $F$ and $\omega$ matters in this regard.
Apr
26
revised Product rule for differential forms?
added 9 characters in body
Apr
26
answered Product rule for differential forms?
Apr
25
answered Power series solutions of differential equations, choosing x^n or x^(n+r)?
Apr
25
comment Sturm Liouville with periodic boundary conditions
@Amzoti I was curious, did you see my question, it got buried pretty fast after I posted it. I think you might know the answer...
Apr
24
revised Sturm Liouville with periodic boundary conditions
added 74 characters in body
Apr
24
asked Sturm Liouville with periodic boundary conditions
Apr
19
answered need of smooth structure on manifold
Apr
15
reviewed Approve suggested edit on Integral of $e^x(1-x)^n$
Apr
14
answered A really complicated calculus book
Apr
14
comment A really complicated calculus book
His description of the aim of differential geometry in the introduction to that book is just amazing.
Apr
6
comment Baker–Campbell–Hausdorff formula for [exp(x),exp(y)]
Hi again, I forgot about this question when I came upon math.stackexchange.com/q/711308/36530 but, it seems to me, there may be a way of using the technique there to help out here, or at a minimum it's worth looking at.
Apr
4
comment What do I need to know to understand Lam's Serre's Problem on projective modules
@user42912 yep. (+1)
Apr
4
comment What do I need to know to understand Lam's Serre's Problem on projective modules
this question would be much improved if "the book" was actually mentioned in text here not just in a link.
Apr
4
comment The Curvature Tensor
Concerning the commutator $[e_c,e_d]$, no, generally, the frame need not commute. However, if $[e_c,e_d]=0$ then there exists a coordinate system for which the coordinate derivations reproduce the frame locally. On the other hand, if $[e_c,e_d] \neq 0$ then there is no such coordinate system.
Apr
4
answered Third degree Taylor polynomial in two variables
Mar
30
comment Calculus of several variables
I only see $x$ ( a single variable ) in your problem... also, welcome to the MSE!
Mar
27
answered Is my understanding of space correct?