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» The Complexity of Symmetry-Breaking Formulas
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JSYML
2008
73views more  JSYML 2008»
15 years 4 months ago
Examining fragments of the quantified propositional calculus
When restricted to proving q i formulas, the quantified propositional proof system G i is closely related to the b i theorems of Buss's theory Si 2. Namely, G i has polynomial...
Steven Perron
COCO
2003
Springer
82views Algorithms» more  COCO 2003»
15 years 9 months ago
Derandomization and Distinguishing Complexity
We continue an investigation of resource-bounded Kolmogorov complexity and derandomization techniques begun in [2, 3]. We introduce nondeterministic time-bounded Kolmogorov comple...
Eric Allender, Michal Koucký, Detlef Ronneb...
AML
2011
204views Mathematics» more  AML 2011»
14 years 11 months ago
A note on propositional proof complexity of some Ramsey-type statements
Any valid Ramsey statement n −→ (k)2 2 can be encoded into a DNF formula RAM(n, k) of size O(nk) and with terms of size k 2 . Let rk be the minimal n for which the statement h...
Jan Krajícek
STOC
2012
ACM
196views Algorithms» more  STOC 2012»
13 years 6 months ago
Time-space tradeoffs in resolution: superpolynomial lower bounds for superlinear space
We give the first time-space tradeoff lower bounds for Resolution proofs that apply to superlinear space. In particular, we show that there are formulas of size N that have Reso...
Paul Beame, Christopher Beck, Russell Impagliazzo
SIGMOD
2003
ACM
196views Database» more  SIGMOD 2003»
16 years 4 months ago
Spreadsheets in RDBMS for OLAP
One of the critical deficiencies of SQL is lack of support for ndimensional array-based computations which are frequent in OLAP environments. Relational OLAP (ROLAP) applications ...
Andrew Witkowski, Srikanth Bellamkonda, Tolga Bozk...