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Metamath Zero: designing a theorem prover prover. (English) Zbl 1455.68243
Benzmüller, Christoph (ed.) et al., Intelligent computer mathematics. 13th international conference, CICM 2020, Bertinoro, Italy, July 26–31, 2020. Proceedings. Cham: Springer. Lect. Notes Comput. Sci. 12236, 71-88 (2020).
Summary: As the usage of theorem prover technology expands, so too does the reliance on correctness of the tools. Metamath Zero is a verification system that aims for simplicity of logic and implementation, without compromising on efficiency of verification. It is formally specified in its own language, and supports a number of translations to and from other proof languages. This paper describes the abstract logic of Metamath Zero, essentially a multi-sorted first order logic, as well as the binary proof format and the way in which it can ensure essentially linear time verification while still being concise and efficient at scale. Metamath Zero currently holds the record for fastest verification of the set.mm Metamath library of proofs in ZFC (including 71 of Wiedijk’s 100 formalization targets), at less than 200 ms. Ultimately, we intend to use it to verify the correctness of the implementation of the verifier down to binary executable, so it can be used as a root of trust for more complex proof systems.
For the entire collection see [Zbl 1452.68005].
68V15 Theorem proving (automated and interactive theorem provers, deduction, resolution, etc.)
68Q60 Specification and verification (program logics, model checking, etc.)
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