18,407 reputation
13889
bio website sites.google.com/a/unca.edu/…
location Asheville, NC
age
visits member for 2 years, 6 months
seen 9 mins ago

I've been a professor of mathematics at The University of North Carolina - Asheville since 1997. I've been using Mathematica since I started graduate school in mathematics at Ohio State in 1989. At that time, we used version 1.1 (as I recall) to teach calculus in our Calculus and Mathematica classes. I've used it pretty much continuously in my teaching and research since then.

In addition to my posts on SE, you can find some of my papers, teaching notebooks and other Mathematica based oddities strewn throughout my website.

In recent years, I've also worked as a part-time consultant to Wolfram Research focusing on development of mathematical content for WolframAlpha.


Jun
2
reviewed Leave Closed How can I recover the source code from cdf file?
May
23
reviewed Leave Open Help with DeleteCases
May
23
reviewed Leave Open Discrete peaks to curve via Voigt summation
May
21
comment 2D Visualization of links and knots
@RahulNarain I won't be using it anytime soon so feel free!
May
21
comment Extract a list of all built-in functions used in a notebook
You might also anticipate getting List, Set, and Times, since a=1 for example is equivalent to Set[a,1].
May
21
comment 2D Visualization of links and knots
@RahulNarain We can find all the crossings as follows: N[{ToRules[Reduce[{trefoil2d[t1] == trefoil2d[t2], 0 < t1 < 2 Pi, 0 < t2 < 2 Pi, t1 < t2}, {t1, t2}]]}].
May
20
revised 2D Visualization of links and knots
added 284 characters in body
May
20
comment 2D Visualization of links and knots
I must agree with Pickett. It would be much easier to provide a useful answer if we knew your input.
May
20
revised 2D Visualization of links and knots
added 708 characters in body
May
20
comment 2D Visualization of links and knots
@RahulNarain Better?
May
20
revised 2D Visualization of links and knots
deleted 339 characters in body
May
20
revised 2D Visualization of links and knots
added 642 characters in body
May
20
answered 2D Visualization of links and knots
May
11
reviewed Leave Open How to define a matrix with all elements 0?
May
11
comment How to define a matrix with all elements 0?
Expanding on Oska's comment, if you simply define m[i_,j_]=0, then you'll get the array you want, since Array produces an array with elements m[i,j]. Oska did essentially this using a pure function.
May
10
revised How to plot this function?
added 431 characters in body
May
10
comment How to plot this function?
@GabrielR. _?NumericQ is useful to prevent evaluation prior to an actual number being plugged in and I use it out of habit when defining functions using numerical procedures. Strictly speaking, it's not necessary here. If you were to try to plot $f'$, however, some errors would be issued. The With construct is simply a scoping mechanism to declare n as local. Module could have been used just as well.
May
10
answered How to plot this function?
May
9
comment How to find the period of an arbitrary mathematical function?
@RichardFateman There is an FAQ. Among other things, you'll learn that you can create new tags after you have 300 rep and how to format your posts.
May
7
comment How to find the period of an arbitrary mathematical function?
Generally, it's fine to provide pointers to papers but, if that's all and "answer" does, then a comment is really more appropriate. Also, the comment was placed under the original question. If that's genuinely a "marginally-related post", then why are you posting an answer at all?