Subcritical pattern languages for and/or trees
Subcritical pattern languages for and/or trees
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和/或树的亚临界模式语言
DOI:
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发表时间:
2008
期刊:
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通讯作者:
J. Kozik
中科院分区:
文献类型:
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作者:
J. Kozik
Let $P_k(f)$ denote the density of and/or trees defining a boolean function $f$ within the set of and/or trees with fixed number of variables $k$. We prove that there exists constant $B_f$ such that $P_k(f) sim B_f cdot k^{-L(f)-1}$ when $k o infty$, where $L(f)$ denote the complexity of $f$ (i.e. the size of a minimal and/or tree defining $f$). This theorem has been conjectured by Daniele Gardy and Alan Woods together with its counterpart for distribution $pi$ defined by some critical Galton-Watson process. Methods presented in this paper can be also applied to prove the analogous property for $pi$.