6,791 reputation
2628
bio website supermath.info
location Virgina USA
age 35
visits member for 1 year, 8 months
seen 3 hours 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
15
reviewed Approve suggested edit on Integral of $e^x(1-x)^n$
Apr
15
reviewed Approve suggested edit on Distance from a point x to a Set A
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?
Mar
26
comment Elementary linear algebra book
Take a look at Insel Spence and Friedberg's Linear Algebra.
Mar
24
revised Can any 3d surface be mapped to a 2d plane?
added 9 characters in body
Mar
24
comment Can any 3d surface be mapped to a 2d plane?
@DanielRust yes a reasonable comment, I will edit to reflect.
Mar
24
answered Can any 3d surface be mapped to a 2d plane?
Mar
24
answered Locate and classify singular points
Mar
24
reviewed Approve suggested edit on How to find the circumcircle radius from this following regular hexagon?
Mar
24
comment Vector space basis
what is the question?
Mar
17
revised Epsilon-Delta Confusion
added 36 characters in body
Mar
17
comment Epsilon-Delta Confusion
@msouth I agree it's not just about derivatives. I include that as an example. I totally agree there is a multitude of other examples. The reason I bring up the derivative is that it is not a weird thing like a hole in the graph. It is the central problem of differential calculus. I'll edit my answer to make this clearer, I see your comment as I read it again... thanks!