Put a reference on eta function into tutorial.

[ginac.git] / doc / tutorial / ginac.texi

diff --git a/doc/tutorial/ginac.texi b/doc/tutorial/ginac.texi
index 236d98ddeb93b61c477e6bb48cac78c2591245ec..21e31b2c98501fc7581ceed6c3013e978dbbc3f1 100644 (file)
--- a/doc/tutorial/ginac.texi
+++ b/doc/tutorial/ginac.texi
@@ -24,7 +24,7 @@
 This is a tutorial that documents GiNaC @value{VERSION}, an open
 framework for symbolic computation within the C++ programming language.
 
-Copyright (C) 1999-2011 Johannes Gutenberg University Mainz, Germany
+Copyright (C) 1999-2015 Johannes Gutenberg University Mainz, Germany
 
 Permission is granted to make and distribute verbatim copies of
 this manual provided the copyright notice and this permission notice
@@ -52,7 +52,7 @@ notice identical to this one.
 
 @page
 @vskip 0pt plus 1filll
-Copyright @copyright{} 1999-2011 Johannes Gutenberg University Mainz, Germany
+Copyright @copyright{} 1999-2015 Johannes Gutenberg University Mainz, Germany
 @sp 2
 Permission is granted to make and distribute verbatim copies of
 this manual provided the copyright notice and this permission notice
@@ -135,7 +135,7 @@ the near future.
 
 @section License
 The GiNaC framework for symbolic computation within the C++ programming
-language is Copyright @copyright{} 1999-2011 Johannes Gutenberg
+language is Copyright @copyright{} 1999-2015 Johannes Gutenberg
 University Mainz, Germany.
 
 This program is free software; you can redistribute it and/or
@@ -5858,6 +5858,9 @@ GiNaC contains the following predefined mathematical functions:
 @item @code{log(x)}
 @tab natural logarithm
 @cindex @code{log()}
+@item @code{eta(x,y)}
+@tab Eta function: @code{eta(x,y) = log(x*y) - log(x) - log(y)}
+@cindex @code{eta()}
 @item @code{Li2(x)}
 @tab dilogarithm
 @cindex @code{Li2()}