General ⇒ really strange math markup language

[episanty]

Hi

I was searching for an article and finally found it, but in the format

Además se usarán las siguientes notaciones. Sea k= 1,2, ..., c y [[sigma].sub.k] el alambre con una resistencia [r.sub.k] y llevando una fuerza electromotriz [e.sub.k], donde [e.sub.k] es un número positivo, negativo o nulo igual a la suma de los saltos del potencial al atravesar [[sigma].sub.k] en el sentido positivo del alambre; [[sigma].sub.k] es recorrido por la corriente (de intensidad) [i.sub.k], [i.sub.k] > 0 o [i.sub.k]<0, según que ella fluya en el sentido positivo de [[sigma].sub.k] o en el sentido opuesto; [i.sub.k] = 0 si no hay corriente en [[sigma].sub.k].

which I find close to impossible to read, and certainly not for the approx 5000 words of the article. Does anyone know what language this is, and how I can read it or, if need be, translate into TeX?


Edit:
I'm sorry, I know this isn't very clear. The text language is spanish; the question is about the math language: [[sigma].sub.k], etc. More may be found at http://www.accessmylibrary.com/coms2/su ... 442747_ITM

[localghost]

I can only guess but the language seems like Spanish to me. The text itself seems to be from a source where mathematical expressions are not possible. So the author chose another notation. A "translation" into LaTeX should look like the following.

Code: Select all

\documentclass[11pt,a4paper,spanish]{article}
\usepackage[T1]{fontenc}
\usepackage[latin1]{inputenc}
\usepackage{babel}
\usepackage[includeheadfoot,margin=2cm]{geometry}
\usepackage{amsmath}

\begin{document}
  Además se usarán las siguientes notaciones. Sea $k=1,2,\ldots,c$ y $\sigma_k$ el alambre con una resistencia $r_k$ y llevando una fuerza electromotriz $e_k$, donde $e_k$ es un número positivo, negativo o nulo igual a la suma de los saltos del potencial al atravesar $\sigma_k$ en el sentido positivo del alambre; $\sigma_k$ es recorrido por la corriente (de intensidad) $i_k$, $i_k>0$ o $i_k<0$, según que ella fluya en el sentido positivo de $\sigma_k$ o en el sentido opuesto; $i_k=0$ si no hay corriente en $\sigma_k$.
\end{document}

Perhaps you or some other board members can confirm my assumption concerning the language.


Best regards
Thorsten¹

[episanty]

Thorsten,

I know the language is spanish. I can understand the mathematics, or at least what the author meant, but it's close to impossible to follow the mathematics when it's said like [[sigma].sub.k] instead of what LaTeX would make of $\sigma_k$. For the exerpt you quote, did you translate it yourself, or did you use some software?

thanks,
episanty

[localghost]

[...] For the exerpt you quote, did you translate it yourself, or did you use some software? [...]

I did that on my own. No big deal because the only logical way for me to read [[sigma].sub.k] is a small letter k subscripted as index to a small greek sigma. I guess the text you took the excerpt from will not contain any more complicated expressions like fractions, integrals or sums.

[episanty]

Thorsten,

The problem is not so much understanding what the guy means, which is rather straightforward, but rather doing so for the ~17 pages of the article, which I find incredibly tiresome. I don't know whether the text contains more sophisticated notation later on but I'm guessing it does; it's a formal linear-algebraic proof of the sufficiency of Kirchhoff's laws to completely determine the state of an electric circuit and as such it's bound to use more sophisticated stuff than $\sigma_k$'s.

I don't think that this [[sigma].sub.k] business was typewritten directly by the author, expecting the reader to understand it like that; it is evidently some kind of markup language but for the life of me I can't figure out what it is and how to compile it or translate it into a manageable (TeX) form in a systematic way.

Does anyone know?