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Quantum Relational Hoare Logic with Expectations (1903.08357v2)
Published 20 Mar 2019 in cs.LO and quant-ph
Abstract: We present a variant of the quantum relational Hoare logic from (Unruh, POPL 2019) that allows us to use "expectations" in pre- and postconditions. That is, when reasoning about pairs of programs, our logic allows us to quantitatively reason about how much certain pre-/postconditions are satisfied that refer to the relationship between the programs inputs/outputs.