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D.9.2.7 texname

Procedure from library latex.lib (see latex_lib).

Usage:
texname(fname,s); fname,s strings

Return:
if fname="": the transformed string s, for which the following rules apply:
 
      s' + "~"             -->  "\\tilde{"+ s' +"}"
     "_" + int             -->       "_{" + int +"}"
  "[" + s' + "]"           -->      "_{" + s' + "}"
   "A..Z" + int            --> "A..Z" + "^{" + int + "}"
   "a..z" + int            --> "a..z" + "_{" + int + "}"
"(" + int + "," + s' + ")" --> "_{"+ int +"}" + "^{" + s'+"}"
Furthermore, strings which begin with a left brace are modified by deleting the first and the last character (which is then assumed to be a right brace).

if fname!="": append the transformed string s to the file <fname>, and return nothing.

Note:
preceding ">>" are deleted in fname, and suffix ".tex" (if not given) is added to fname.

Example:
 
LIB "latex.lib";
ring r = 0,(x,y),lp;
poly f = 3xy4 + 2xy2 + x5y3 + x + y6;
texname("","{f(10)}");
==> f(10)
texname("","f(10) =");
==> f_{10} =
texname("","n1");
==> n_{1}
texname("","T1_12");
==> T^{1}_{12}
texname("","g'_11");
==> g'_{11}
texname("","f23");
==> f_{23}
texname("","M[2,3]");
==> M_{2,3}
texname("","A(0,3);");
==> A_{0}^{3};
texname("","E~(3)");
==> \tilde{E}_{3}


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