Reducing the number of solutions of NP functions
Journal of Computer and System Sciences
Competing Provers Yield Improved Karp-Lipton Collapse Results
STACS '03 Proceedings of the 20th Annual Symposium on Theoretical Aspects of Computer Science
STACS '03 Proceedings of the 20th Annual Symposium on Theoretical Aspects of Computer Science
Beyond NP: the work and legacy of Larry Stockmeyer
Proceedings of the thirty-seventh annual ACM symposium on Theory of computing
Competing provers yield improved Karp-Lipton collapse results
Information and Computation
A note on the circuit complexity of PP
Theoretical Computer Science
SIGACT news complexity theory column 53
ACM SIGACT News
Journal of Computer and System Sciences
Circuit lower bounds for Merlin-Arthur classes
Proceedings of the thirty-ninth annual ACM symposium on Theory of computing
Pseudorandomness for Approximate Counting and Sampling
Computational Complexity
Polylogarithmic-round interactive proofs for coNP collapse the exponential hierarchy
Theoretical Computer Science
Proving SAT does not have small circuits with an application to the two queries problem
Journal of Computer and System Sciences
On proving circuit lower bounds against the polynomial-time hierarchy: positive and negative results
COCOON'03 Proceedings of the 9th annual international conference on Computing and combinatorics
Robust simulations and significant separations
ICALP'11 Proceedings of the 38th international colloquim conference on Automata, languages and programming - Volume Part I
Some results on average-case hardness within the polynomial hierarchy
FSTTCS'06 Proceedings of the 26th international conference on Foundations of Software Technology and Theoretical Computer Science
MFCS'06 Proceedings of the 31st international conference on Mathematical Foundations of Computer Science
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We show that the class S_2^p is a subclass of ZPPNP. The proof uses universal hashing, approximate counting and witness sampling. As a consequence, a collapse first noticed by Samik Sengupta that the assumption NP has small circuits collapses PH to S_2^p becomes the strongest version to date of the Karp-Lipton Theorem. We also discuss the problem of finding irrefutable proofs for S_2^p in ZPPNP.