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slide 1 fall 2006costas busch - rpi1 regular expressions slide 2 fall 2006costas busch - rpi2 regular expressions regular expressions describe regular languages example:…
mathematical preliminaries costas busch - rpi mathematical preliminaries sets functions relations graphs proof techniques costas busch - rpi a set is a collection of elements…
slide 1 courtesy costas busch - rpi1 mathematical preliminaries slide 2 courtesy costas busch - rpi2 mathematical preliminaries sets functions relations graphs proof techniques…
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:…
slide 1 courtesy costas busch - rpi1 pushdown automata pdas slide 2 courtesy costas busch - rpi2 pushdown automaton -- pda input string stack states slide 3 courtesy costas…
slide 1 fall 2005costas busch - rpi1 pushdown automata pdas slide 2 fall 2005costas busch - rpi2 pushdown automaton -- pda input string stack states slide 3 fall 2005costas…
slide 1fall 2006costas busch - rpi1 a universal turing machine slide 2 fall 2006costas busch - rpi2 turing machines are hardwired they execute only one program a limitation…
slide 1courtesy costas busch - rpi1 linear bounded automata lbas slide 2 courtesy costas busch - rpi2 linear bounded automata (lbas) are the same as turing machines with…
slide 1 fall 2006costas busch - rpi1 undecidable problems (unsolvable problems) slide 2 fall 2006costas busch - rpi2 recall that: a language is decidable, if there is a turing…
the post correspondence problem costas busch - rpi some undecidable problems for context-free languages: is context-free grammar ambiguous? is ? are context-free grammars…
slide 1 courtesy costas busch - rpi1 a universal turing machine slide 2 courtesy costas busch - rpi2 turing machines are “hardwired” they execute only one program a limitation…
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 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 costas busch - rpi1 mathematical preliminaries slide 2 costas busch - rpi2 mathematical preliminaries sets functions relations graphs proof techniques slide 3 costas…
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 pushdown automata pdas slide 2 costas busch - rpi2 pushdown automaton -- pda input string stack states slide 3 costas busch - rpi3 initial stack…
slide 1 prof. busch - lsu1 context-free languages slide 2 prof. busch - lsu2 regular languages context-free languages slide 3 prof. busch - lsu3 context-free languages pushdown…
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)…