Logic seminar: The number of maximally complex languages

When:
October 29, 2018 @ 2:30 pm – 3:30 pm
2018-10-29T14:30:00-10:00
2018-10-29T15:30:00-10:00

Speaker: B. Kjos-Hanssen (joint work with Lei Liu)
Abstract:
Campeanu and Ho (2004) stated that it is “very difficult” to compute the number $m_n$ of maximally complex languages (in a finite automata sense) consisting of binary words of length $n$. We show that $m_n=O_{i,n}$, the number of functions from $[2^i]$ to $[2^{2^{n-i}}]$ whose range contains $[2^{2^{n-i}}-1]$, for the least $i$ for which $O_{i,n}>0$. Here, $[a]=${1,…,a}.