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Automated simplification of large symbolic expressions
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| Organization: | Lawrence Berkeley National Laboratory |
| Organization: | Univ. of Newcastle |
| Department: | Centre for Computer Assisted Research Mathematics and its Applications (CARMA) |
| Organization: | NewYorkUniversity |
| Department: | CourantInstituteofMathematicalSciences |
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| Journal of Symbolic Computation |
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We present a set of algorithms for automated simplification of symbolic constants of the formiαixi with α irational and xi complex. The included algorithms, called SimplifySum2 and implemented in Mathematica, remove redundant terms, attempt to make terms and the full expression real, and remove terms using repeated application of the multipair PSLQ integer relation detection algorithm. Also included are facilities for making substitutions according to user-specified identities. We illustrate this toolset by giving some real-world examples of its usage, including one, for instance, where the tool reduced a symbolic expression of approximately 100000 characters in size enough to enable manual manipulation to one with just four simple terms.
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Simplification, Computer algebra systems, Experimental mathematics, Error correction
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