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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
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