meta user
network profile
| bio | website | facstaff.unca.edu/mcmcclur |
|---|---|---|
| location | Asheville, NC | |
| age | ||
| visits | member for | 1 year, 4 months |
| seen | 4 hours ago | |
| stats | profile views | 1,154 |
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.
|
Apr 27 |
comment |
Mathematica does not understand (R^3)^(1/3) is the same as R @JacobAkkerboom Yes, Mathematica generally assumes that unspecified symbols represent complex quantities. However, certain mathematical functions work only with a proper subset of the complexes. Many number theoretic functions, such as EulerPhi work only with the integers, for example. The point behind my answer is that the new CubeRoot function assumes the input is real. |
|
Apr 26 |
comment |
Mathematica does not understand (R^3)^(1/3) is the same as R Ahh... that too. |
|
Apr 26 |
comment |
Mathematica does not understand (R^3)^(1/3) is the same as R And while I was typing my answer. |
|
Apr 23 |
comment |
How to speed up the plot of NIntegrate? @luyuwuli It should work whenever NDSolve works. My guess is that it is not quite a broadly applicable as the integrate technique, but it should be nearly so. |
|
Apr 22 |
comment |
Solving Intervals Here's a very similar question: mathematica.stackexchange.com/questions/11345/… |
|
Apr 22 |
comment |
Why the difference? Pretty much exactly the opposite of what I did - very cool! |
|
Apr 21 |
comment |
How to specify VertexCoordinates as geographic coordinates of cities? Are you saying that you would like to plot the graph laid out in such a way that the vertices are placed according to their geographic location? |
|
Apr 18 |
comment |
How do I evaluate a double or triple integral over a region? @Melab Well, I'm not sure which input you're talking about. In the first input, using Boole, the bounds simply need to be large enough to contain the region; in fact, $-\inf$ to $\inf$ will work. In the second input, again, you need to understand the coordinate system. |
|
Apr 14 |
comment |
Series expansion in terms of Hermite polynomials Probably the best answer. It uses the orthogonality and speeds things up using the closed form. +1 |
|
Apr 14 |
comment |
Series expansion in terms of Hermite polynomials Ahh... Algebra. I accidentally studied analysis in graduate school. :) |
|
Mar 29 |
comment |
Strange behaviour of PolyLog Function @Rainer Again, I'm not an expert on PolyLogs specifically, but this is a common issue in special function evaluation. I certainly wouldn't trust the result of N[Sin[E^500]], I would be more comfortable with N[Sin[E^500], 20], after increasing $MaxExtraPrecision to 400 or so. |
|
Mar 29 |
comment |
List reversion inspired by Python This works: Range[10][[10 ;; 1 ;; -1]]. It's not an idiom I've used, but found it pretty easily in the documentation. |
|
Mar 29 |
comment |
List reversion inspired by Python Is there a reason that you don't want to use the Reverse command? |
|
Mar 28 |
comment |
Matrix Determinant @belisarius The OP typed in exactly like that. All I did was add some leading spaces so that the input would be formatted on the webpage here, as opposed to all run together the way it was. Like everyone, I don't know if that format is correct or not; only the OP can say. |
|
Mar 28 |
comment |
Matrix Determinant I edited your "fortran output" just a bit further, to make sure it was formatted properly, rather than wrapped. Are you saying that you have a text file in exactly that form, with possibly more rows for a larger matrix? |
|
Mar 27 |
comment |
Create triangular mesh from random list of points @Szabolcs Hey, I upvoted! I was joking when I said I wasn't sure if I liked it. |
|
Mar 27 |
comment |
Combining two notebooks Can you be more specific about the nature of your"variables and functions"? How huge are we talking? You might be able to place them in a .m file and read that in. Or you might be able to place them in an initialization cell in a separate (collapsed) section in the same notebook. A little more information might help. |
|
Mar 27 |
comment |
Create triangular mesh from random list of points @Szabolcs It's just that ListDensityPlot is about the last thing I would've thought of. Back in the day, this returned a DensityGraphics object. I guess it now returns a GraphicsComplex with polygons. I use the Graphics`Mesh stuff all the time, though. |
|
Mar 27 |
comment |
Create triangular mesh from random list of points Hmm... I can't decide whether I like this or not. I guess I better upvote, just in case. |
|
Mar 27 |
comment |
Create triangular mesh from random list of points @ThomasJebbSturges No problem! |
