673 reputation
411
bio website problemasteoremas.wordpress.c…
location Queluz, Portugal
age 62
visits member for 2 years, 6 months
seen 3 hours ago
stats profile views 137

I'm a retired Portuguese electrical engineer.

You can contact me at acltavares[at]sapo[dot]pt

Blog.

profile for Américo Tavares on Stack Exchange, a network of free, community-driven Q&A sites


9h
revised How to create posters using LaTeX
Corrected a link and added another
10h
answered How to create posters using LaTeX
May
4
comment How to draw these diagrams (closed contours) using TikZ or PSTricks?
(+1) A very nice, helpful and pedagogical answer. Thanks!
Mar
19
awarded  Nice Question
Jan
23
awarded  Informed
Jan
23
awarded  Civic Duty
Jan
22
comment Using Symbols in tables
Are you looking for Weather Symbols? In the affirmative case see Table 297: ifsym Weather Symbols of The Comprehensive LATEX Symbol List by Scott Pakin.
Jan
12
comment How to draw the calculation of a determinant?
@user24295 You are welcome! Glad to know that the mathtools solution "worked like a charm".
Jan
12
revised How to draw the calculation of a determinant?
added 4 characters in body
Jan
12
revised How to draw the calculation of a determinant?
added 560 characters in body
Jan
12
revised How to draw the calculation of a determinant?
added 240 characters in body
Jan
11
comment How to draw the calculation of a determinant?
@cmhughes Thanks! I've updated the code in accordance with your comment.
Jan
11
revised How to draw the calculation of a determinant?
added 47 characters in body
Jan
11
comment How to draw the calculation of a determinant?
@Manuel Thanks. The section 4.1 Matrices of User’s Guide for the amsmath Package says: "unlike the array environment, you don’t have to give column specifications for any of the matrix environments; by default you can have up to 10 centered columns.2 (If you need left or right alignment in a column or other special formats you must resort to array.)"
Jan
11
comment How to draw the calculation of a determinant?
@Manuel Thanks. I've tried to use the option [r] in all \begin{vmatrix*}[r] ... \end{vmatrix*}, but I got an error message. I have no explanation.
Jan
11
revised How to draw the calculation of a determinant?
replaced `eqnarray` with `align`and `&=&` with `&=`
Jan
11
comment How to draw the calculation of a determinant?
@cmhughes Could you please elaborate a bit because I don't understand your advice?
Jan
11
comment How to draw the calculation of a determinant?
@egreg. I will try to change the eqnarray environment to a more adequate one, but now that you have an answer with the align* it will be difficult. You are right, the document you indicated says: "Although the standard eqnarray environment remains available, it is better to use align or equation+split instead."
Jan
11
comment How to draw the calculation of a determinant?
@percuse Thanks!
Jan
11
comment How to draw the calculation of a determinant?
@user24295 I don't know how to have positive and negative numbers right aligned in the \begin{vmatrix} ... \begin{vmatrix} environment.