A 2.5 n-lower bound on the combinational complexity of Boolean functions

  • Authors:
  • Wolfgang J. Paul

  • Affiliations:
  • -

  • Venue:
  • STOC '75 Proceedings of seventh annual ACM symposium on Theory of computing
  • Year:
  • 1975

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Abstract

Consider the combinational complexity L(f) of Boolean functions over the basis &Ohgr; &equil; {f¦ f:{0,1}2 → {0,1}}. A new Method for proving linear lower bounds of size 2n is presented. Combining it with methods presented in [12] and [15], we establish for a special sequence of functions fn:{0,1}n → {0,1}: 2.5n ≤ L(f) &le 6n. Also a trade-off result between circuit complexity and formula size is derived.