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The Higher-Order Prover Leo-II
Christoph Benzmüller1, Nik Sultana2, Lawrence C Paulson2
1Department of Mathematics and Computer Science, Freie Universität Berlin, Berlin, Germany.
Abstract:
Leo-II is an automated theorem prover for classical higher-order logic. The prover has pioneered cooperative higher-order-first-order proof automation, it has influenced the development of the TPTP THF infrastructure for higher-order logic, and it has been applied in a wide array of problems. Leo-II may also be called in proof assistants as an external aid tool to save user effort. For this it is crucial that Leo-II returns proof information in a standardised syntax, so that these proofs can eventually be transformed and verified within proof assistants. Recent progress in this direction is reported for the Isabelle/HOL system.
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