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ECS 120 9b:4 how to spot undecidability duration 11 minutes 35 seconds ECS 120 9b:4 how to spot undecidability ECS 120 9b:4 how to spot undecidability	ECS 120 9b:4 how to spot undecidability behavior input question algorithm questions problem machine turing examples lines steps proof inputs intuition alphabet syntax notes lecture source stuff From David Doty 0 likes 210 plays 0
ECS 120 4c:4 expression automata duration 2 minutes 8 seconds ECS 120 4c:4 expression automata ECS 120 4c:4 expression automata	ECS 120 4c:4 expression automata expression transition arrow string start bbba input substring interpretation aba strings automata nfa manner semantics syntax followers times substrings words From David Doty 1 likes 183 plays 0
ECS 120 2a:2 regex formal definition duration 10 minutes 23 seconds ECS 120 2a:2 regex formal definition ECS 120 2a:2 regex formal definition	ECS 120 2a:2 regex formal definition string symbol expression language parentheses alphabet cases symbols r2 star r1 concatenation base union expressions input syntax definition operator rejects From David Doty 1 likes 284 plays 0
ECS 120 1b:4 intuitive overview of DFA semantics duration 4 minutes 11 seconds ECS 120 1b:4 intuitive overview of DFA semantics ECS 120 1b:4 intuitive overview of DFA semantics	ECS 120 1b:4 intuitive overview of DFA semantics language dfa strings string inputs cardinality arrows delta sigma words a. domain function diagram transition question semantics dfs syntax types From David Doty 1 likes 271 plays 0
ECS 120 1b:2 formal models of computation duration 3 minutes 16 seconds ECS 120 1b:2 formal models of computation ECS 120 1b:2 formal models of computation	ECS 120 1b:2 formal models of computation computation model semantics programming syntax language dfa principles operator point statement languages models teeth reason loss assignment complexity bit function From David Doty 1 likes 284 plays 0