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slide 1 fall 2006costas busch - rpi1 non-regular languages (pumping lemma) slide 2 fall 2006costas busch - rpi2 regular languages non-regular languages slide 3 fall 2006costas…
slide 1 costas busch - rpi1 more applications of the pumping lemma slide 2 costas busch - rpi2 the pumping lemma: given a infinite regular language there exists an integer…
slide 1 fall 2005costas busch - rpi1 recursively enumerable and recursive languages slide 2 fall 2005costas busch - rpi2 definition: a language is recursively enumerable…
slide 1 courtesy costas busch - rpi1 npdas accept context-free languages slide 2 courtesy costas busch - rpi2 instantaneous description current state remaining input current…
slide 1 fall 2006costas busch - rpi1 more applications of the pumping lemma slide 2 fall 2006costas busch - rpi2 the pumping lemma: given a infinite regular language there…
slide 1 fall 2006costas busch - rpi1 deterministic finite automata and regular languages slide 2 fall 2006costas busch - rpi2 deterministic finite automaton (dfa) input tape…
slide 1 courtesy costas busch - rpi1 positive properties of context-free languages slide 2 courtesy costas busch - rpi2 context-free languages are closed under: union is…
slide 1 costas busch - rpi1 the pumping lemma for context-free languages slide 2 costas busch - rpi2 take an infinite context-free language example: generates an infinite…
slide 1 costas busch - rpi1 undecidable problems for recursively enumerable languages continued… slide 2 costas busch - rpi2 is empty? is finite? contains two different…
prof. busch - lsu * mathematical preliminaries prof. busch - lsu prof. busch - lsu * mathematical preliminaries sets functions relations graphs proof techniques prof. busch…
slide 1 costas busch - rpi1 finite automata slide 2 costas busch - rpi2 finite automaton input string output string finite automaton slide 3 costas busch - rpi3 finite accepter…
slide 1 costas busch - rpi1 turing machines slide 2 costas busch - rpi2 the language hierarchy regular languages context-free languages ? ? slide 3 costas busch - rpi3 regular…
slide 1 costas busch - rpi1 pushdown automata pdas slide 2 costas busch - rpi2 pushdown automaton -- pda input string stack states slide 3 costas busch - rpi3 initial stack…
slide 1fall 2006costas busch - rpi1 turing machines slide 2 fall 2006costas busch - rpi2 the language hierarchy regular languages context-free languages ? ? slide 3 fall…
slide 1 courtesy costas busch - rpi1 turing machines slide 2 courtesy costas busch - rpi2 the language hierarchy regular languages context-free languages ? ? slide 3 courtesy…
slide 1fall 2006costas busch - rpi1 time complexity slide 2 fall 2006costas busch - rpi2 consider a deterministic turing machine which decides a language slide 3 fall 2006costas…
slide 1 fall 2006costas busch - rpi1 turing’s thesis slide 2 fall 2006costas busch - rpi2 turing’s thesis (1930): any computation carried out by mechanical means can…
slide 1 fall 2003costas busch - rpi1 decidability slide 2 fall 2003costas busch - rpi2 recall: a language is decidable (recursive), if there is a turing machine (decider)…
slide 1 courtesy costas busch - rpi1 turing’s thesis slide 2 courtesy costas busch - rpi2 turing’s thesis: any computation carried out by mechanical means can be performed…
slide 1 fall 2006costas busch - rpi1 languages slide 2 fall 2006costas busch - rpi2 language: a set of strings string: a sequence of symbols from some alphabet example: strings:…