otter(1) resolution-style theorem prover


otter < input-file > output-file


This manual page documents briefly the otter command.

otter 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, Knuth-Bendix completion, and the hints strategy.


No command-line options are accepted; all options are given in the input file.


otter ws written by William McCune <[email protected]>

This manual page was written by Peter Collingbourne <[email protected]>, for the Debian project (but may be used by others).