Characterization of associative operations with prefix circuits of constant depth and linear size
SIAM Journal on Computing
Linear-size constant-depth polylog-threshold circuits
Information Processing Letters
Journal of Computer and System Sciences
Communication complexity
Lower Bounds for Constant Depth Circuits for Prefix Problems
Proceedings of the 10th Colloquium on Automata, Languages and Programming
Complete Classifications for the Communication Complexity of Regular Languages
STACS '03 Proceedings of the 20th Annual Symposium on Theoretical Aspects of Computer Science
Partially-Ordered Two-Way Automata: A New Characterization of DA
DLT '01 Revised Papers from the 5th International Conference on Developments in Language Theory
Superconcentrators, generalizers and generalized connectors with limited depth
STOC '83 Proceedings of the fifteenth annual ACM symposium on Theory of computing
Circuit Complexity of Regular Languages
CiE '07 Proceedings of the 3rd conference on Computability in Europe: Computation and Logic in the Real World
Hilbert's Thirteenth Problem and Circuit Complexity
ISAAC '09 Proceedings of the 20th International Symposium on Algorithms and Computation
Groupoids that recognize only regular languages
ICALP'05 Proceedings of the 32nd international conference on Automata, Languages and Programming
Restricted two-variable FO + MOD sentences, circuits and communication complexity
ICALP'05 Proceedings of the 32nd international conference on Automata, Languages and Programming
Non-definability of Languages by Generalized First-order Formulas over (N,+)
LICS '12 Proceedings of the 2012 27th Annual IEEE/ACM Symposium on Logic in Computer Science
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We develop a new method to analyze the flow of communication in constant-depth circuits. This point of view allows usto prove new lower bounds on the number of wires required to recognize certain languages. We are able to provide explicit languages that can be recognized by AC0 circuits with O(n) gates but not with O(n) wires, and similarly for ACC0 circuits. We are also able to characterize exactly the regular languages that can be recognized with O(n) wires, both in AC0 and ACC0 framework.