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» Four equivalent equivalences of reductions
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RTA
2004
Springer
16 years 1 days ago
Rewriting for Fitch Style Natural Deductions
Logical systems in natural deduction style are usually presented in the Gentzen style. A different definition of natural deduction, that corresponds more closely to proofs in ord...
Herman Geuvers, Rob Nederpelt
LFP
1990
171views more  LFP 1990»
15 years 7 months ago
Operational and Axiomatic Semantics of PCF
PCF, as considered in this paper, is a lazy typed lambda calculus with functions, pairing, fixed-point operators and arbitrary algebraic data types. The natural equational axioms ...
Brian T. Howard, John C. Mitchell
CORR
2010
Springer
108views Education» more  CORR 2010»
15 years 6 months ago
Inverting a permutation is as hard as unordered search
We describe a reduction from the problem of unordered search (with a unique solution) to the problem of inverting a permutation. Since there is a straightforward reduction in the ...
Ashwin Nayak
MFCS
2009
Springer
16 years 1 months ago
Parameterized Complexity Classes under Logical Reductions
Abstract. The parameterized complexity classes of the W -hierarchy are usually defined as the problems reducible to certain natural complete problems by means of fixed-parameter ...
Anuj Dawar, Yuguo He
SIGSOFT
2009
ACM
16 years 7 months ago
Symbolic pruning of concurrent program executions
We propose a new algorithm for verifying concurrent programs, which uses concrete executions to partition the program into a set of lean partitions called concurrent trace program...
Chao Wang, Swarat Chaudhuri, Aarti Gupta, Yu Yang