Category Archives for Mathematics
Matheplanet Award
These days, the voting phase of the Matheplanet Member Award ended. Among the 15 categories, there’s an award for the best LaTeX advisor.
Periodically, more or less
Recently I got my hands on the sine function, again. It’s the classic example for a periodic function. Everybody knows that horizontal wave in the cartesian coordinate system. Starting with a polar plot of a complex sine function in two … Continue reading
Dynamic systems, bifurcations, procedural worlds
I’m using pgfplots a lot, so I will share some examples today. Here, I benefit from these features of pgfplots, going beyond base TikZ: Simple plotting with 3d coordinates and axonometric projection Presentation of required coordinate axes Using color gradients … Continue reading
Iterated fractals
I recently dealt with Iterated function systems , in short IFS. Here we got repeated transformations: the space will be mapped onto itself. There can be different map specifications. We do this an infinite number of times 🙂 and take … Continue reading
Commutative diagrams with crossing edges
When one edge of a graph passes over or under another edge there may be a small gap needed in the drawing of one of those edges. An easy trick is to draw the upper edge two times: first with … Continue reading
Springer recommends eqnarray
I just read on LaTeX-Community.org, that the publisher Springer still recommends to use eqnarray. I could not believe that, so I went to Book Manuscript Guidelines, choose Manuscript Preparation in LaTeX and downloaded svmult.zip, which contains the Springer class for … Continue reading
Left subscripts and superscripts
A quick way to set subscripts and superscripts to the left side is just to write ^ and _ before and perhaps to correct the space between: ^T_1!!A_1^T Source on mathurl.com and Output:
Closed root symbols
In LaTeX/Mathematics, Wikipedia writes: Some people prefer writing the square root “closing” it over its content. This method arguably makes it more clear just what is in the scope of the root sign. It shows a solution defining \sqrt in … Continue reading
Matrix multiplication with LaTeX
Alexx Hardt asked on TeX.SX: How can I draw a diagram for matrix multiplication with LaTeX? I’m trying to make a PDF manual for matrix multiplication with LaTeX. I’d like to generate a graphic similar to this one (from Wikipedia/Matrix … Continue reading
LaTeX-Award on Matheplanet.com
Today Matheplanet.com has celebrated its annual awards for the 8th time. Members of the forum were honored for their contributions during the last year, 260 members have voted this time. There were many categories, from mathematics and physics to LaTeX … Continue reading
Inline math: $…$ vs. (…)
l2tabu, a text informing about obsolete packages and commands, recommends to replace $$…$$ by […], but it doesn’t say a word about the difference between $…$ and (…). “Mathmode” by H. Voss does tell something, but it says in v2.40: … Continue reading
TikZ: Commutative diagrams with crossing edges
When one edge of a graph passes over or under another edge there may be a small gap needed in the drawing of one of those edges. An easy trick is to draw the upper edge two times: first with … Continue reading
