Complexity: Automata DICE 2015
An in-between “implicit” and “explicit” complexity: Automata DICE 2015 Clément Aubert Queen Mary University of London 12 April 2015 Introduction: Motivation (Dal Lago, 2011, p. 90) Question Is there an in-between? Answer One can also restrict the quality of the resources. ICC is machine-independent and without explicit bounds. 2 (Ibarra, 1971, p. 88) (Girard et al., 1992, p. 18) Machine-independant Bounded recursion on notation (Cobham, 1965), Bounded linear logic (Girard et al., 1992), Bounded arithmetic (Buss, 1986), . Explicit bounds Automaton, Descriptive complexity (Fagin, 1973), Auxiliary pushdown machine, Recursion on notation (Bellantoni and Cook, 1992), (Boolean circuit,) . Tiered recurrence (Leivant, 1993), . Implicit bounds Introduction: What is ICC? Machine-dependant Turing machine, Random access machine, Counter machine, . 3 (Ibarra, 1971, p. 88) (Girard et al., 1992, p. 18) Explicit bounds Automaton, Descriptive complexity (Fagin, 1973), Auxiliary pushdown machine, Recursion on notation (Bellantoni and Cook, 1992), (Boolean circuit,) . Tiered recurrence (Leivant, 1993), . Implicit bounds Introduction: What is ICC? Machine-dependant Machine-independant Turing machine, Bounded recursion on notation (Cobham, 1965), Random access machine, Bounded linear logic (Girard et al., 1992), Counter machine, . Bounded arithmetic (Buss, 1986), . 3 (Ibarra, 1971, p. 88) Explicit bounds Automaton, Descriptive complexity (Fagin, 1973), Auxiliary pushdown machine, Recursion on notation (Bellantoni and Cook, 1992), (Boolean circuit,) . Tiered recurrence (Leivant, 1993), . Implicit bounds Introduction: What is ICC? Machine-dependant Machine-independant Turing machine, Bounded recursion on notation (Cobham, 1965), Random access machine, Bounded linear logic (Girard et al., 1992), Counter machine, . Bounded arithmetic (Buss, 1986), . (Girard et al., 1992, p. 18) 3 (Ibarra, 1971, p. 88) (Girard et al., 1992, p.
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