From: Christian Bauer Date: Mon, 5 Aug 2002 18:27:18 +0000 (+0000) Subject: documentation update X-Git-Tag: release_1-0-11~10 X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=commitdiff_plain;h=f4de6c7ca6448968451ffbfe69bb2207c1021acc documentation update --- diff --git a/doc/tutorial/ginac.texi b/doc/tutorial/ginac.texi index 14154336..2c3583de 100644 --- a/doc/tutorial/ginac.texi +++ b/doc/tutorial/ginac.texi @@ -1878,9 +1878,9 @@ indices into a canonical order which allows for some immediate simplifications: // -> 2*A.j.i cout << indexed(B, sy_anti(), i, j) + indexed(B, sy_anti(), j, i) << endl; - // -> -B.j.i + // -> 0 cout << indexed(B, sy_anti(), i, j, k) - + indexed(B, sy_anti(), j, i, k) << endl; + - indexed(B, sy_anti(), j, k, i) << endl; // -> 0 ... @end example @@ -1895,8 +1895,8 @@ not dummy indices are called @dfn{free indices}. Numeric indices are neither dummy nor free indices. To be recognized as a dummy index pair, the two indices must be of the same -class and dimension and their value must be the same single symbol (an index -like @samp{2*n+1} is never a dummy index). If the indices are of class +class and their value must be the same single symbol (an index like +@samp{2*n+1} is never a dummy index). If the indices are of class @code{varidx} they must also be of opposite variance; if they are of class @code{spinidx} they must be both dotted or both undotted.