Has someone a Simplify that really simplifies?

*To*: mathgroup at yoda.physics.unc.edu*Subject*: Has someone a Simplify that really simplifies?*From*: p617hfa at sun24.mpifr-bonn.mpg.de (Heino Falcke)*Date*: Tue, 15 Sep 92 10:43:25 +0200

Hi mathgroup, Mathematica very often returns rather complex algebraic results, which colud be simplified enormously by some simple transformations, grouping certain expressions and pulling out out non-numerical factors (like a x+a y +a z +w)->a (x+y+z+w/a). Using Simplify or Simplify //@ usually has only little effects althought some transformations are obvious e.g. In[1]:= Simplify[a^2+2 a b +b^2] 2 Out[1]= (a + b) In[2]:= Simplify[a^2+2 a b +b^2+x] (very simple example) 2 2 Out[2]= a + 2 a b + b + x Has someone a better procedure for simplifying besides applying litteral replacement rules, for example a compilation of general transformation rules (or should one start to compile such a collection). Heino Falcke, MPIfR Bonn