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» The Complexity of Symmetry-Breaking Formulas
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JSYML
2008
73views more  JSYML 2008»
13 years 9 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»
14 years 3 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»
13 years 4 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»
12 years 9 days 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»
14 years 10 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...