./math/otter, Automated Deduction System

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Branch: pkgsrc-2011Q3, Version: 3.0.6, Package name: otter-3.0.6, Maintainer: pkgsrc-users

Otter (Organized Techniques for Theorem-proving and Effective
Research) is a resolution-style theorem-proving program for
first-order logic with equality. Otter includes the inference rules
binary resolution, hyperresolution, UR-resolution, and binary
paramodulation. Some of its other abilities and features are
conversion from first-order formulas to clauses, forward and back
subsumption, factoring, weighting, answer literals, term ordering,
forward and back demodulation, evaluable functions and predicates, and
Knuth-Bendix completion. Otter is coded in C, is free, and is
portable to many different kinds of computer.

Master sites:

SHA1: 4d62fbeaf3464641bf63c2cd97a15a13ee81a858
RMD160: 7bcf1ca173ed06dc34d46a242ec5adbd5dca494b
Filesize: 746.138 KB

Version history: (Expand)