Titus Dose, Christian Glaßer

The article investigates the relation between three well-known hypotheses.

1) Hunion: the union of disjoint complete sets for NP is complete for NP

2) Hopps: there exist optimal propositional proof systems

3) Hcpair: there exist complete disjoint NP-pairs

The following results are obtained:

a) The hypotheses are pairwise independent ...
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