Quantitative relativizations of complexity classes
SIAM Journal on Computing
Structural complexity 1
The Boolean hierarchy I: structural properties
SIAM Journal on Computing
Acta Informatica
Polynomial-time 1-Turing reductions from #PH to #P
Theoretical Computer Science
Computing Solutions Uniquely Collapses the Polynomial Hierarchy
SIAM Journal on Computing
SIAM Journal on Computing
Counting Classes: Thresholds, Parity, Mods, and Fewness
STACS '90 Proceedings of the 7th Annual Symposium on Theoretical Aspects of Computer Science
Uniformly Defining Complexity Classes of Functions
STACS '98 Proceedings of the 15th Annual Symposium on Theoretical Aspects of Computer Science
CCC '96 Proceedings of the 11th Annual IEEE Conference on Computational Complexity
Complements of multivalued functions
CCC '96 Proceedings of the 11th Annual IEEE Conference on Computational Complexity
Word problems requiring exponential time(Preliminary Report)
STOC '73 Proceedings of the fifth annual ACM symposium on Theory of computing
On the power of number-theoretic operations with respect to counting
SCT '95 Proceedings of the 10th Annual Structure in Complexity Theory Conference (SCT'95)
The equivalence problem for regular expressions with squaring requires exponential space
SWAT '72 Proceedings of the 13th Annual Symposium on Switching and Automata Theory (swat 1972)
Nondeterministic functions and the existence of optimal proof systems
Theoretical Computer Science
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We present a uniform definition for classes of single- and multi-valued functions. We completely analyze the inclusion structure of function classes. In order to compare classes of multi-valued and single-valued functions with respect to the existence of refinements we extend the so called operator method [VW93,HW00] to make it applicable to such cases. Our approach sheds new light on well-studied classes like NPSV and NPMV, allows to give simpler proofs for known results, and shows that the spectrum of function classes closely resembles the spectrum of well-known complexity classes.