- Polynomial Parity Argument
- Mathematics: PPA
Универсальный русско-английский словарь. Академик.ру. 2011.
Polynomial Parity Argument
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PPA — Participatory Poverty Assessment (Governmental » US Government) **** Polyphthalamide (Miscellaneous » Plastics) *** Professional Photographers Association (Business » Accounting) * Provisional Patent Application (Governmental » US Government) *… … Abbreviations dictionary
PPAD (complexity) — PPAD is a complexity class, standing for Polynomial Parity Arguments on Directed graphs . Introduced by Christos Papadimitriou in 1994, PPAD is a subclass of TFNP based on functions that can be shown to be total by a parity argument. [cite… … Wikipedia
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Particle in a spherically symmetric potential — In quantum mechanics, the particle in a spherically symmetric potential describes the dynamics of a particle in a potential which has spherical symmetry. The Hamiltonian for such a system has the form:hat{H} = frac{hat{p}^2}{2m 0} + V(r)where m 0 … Wikipedia
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Natural proof — In computational complexity theory, a natural proof is a certain kind of proof establishing that one complexity class differs from another one. While these proofs are in some sense natural , it can be shown (assuming a widely believed conjecture… … Wikipedia
