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On the complexity of Boolean functions with small number of ones

  • N. P. Redkin
Published/Copyright: October 1, 2004
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Discrete Mathematics and Applications
From the journal Volume 14 Issue 6

We consider the class of Boolean functions Fn,k consisting of all functions in n variables such that each of them takes value one exactly for k tuples of variables. We obtain linear in n estimates of the complexity of realisation of functions in Fn,k by circuits of functional elements over the basis containing all Boolean functions in two variables except the linear functions xy and xy ⊕ 1. It follows from these estimates that for small k, for example, for k < ln n, the well-known Finikov method provides asymptotically minimal circuits for all functions of Fn,k. In some cases, the known lower bounds for complexity of circuits give a possibility to prove the minimality of the corresponding circuits.

Published Online: 2004-10-01
Published in Print: 2004-10-01

Copyright 2004, Walter de Gruyter

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