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08:45 ECS 120 3b:2 gotchas-multiple union or… ECS 120 3b:2 gotchas-multiple union or intersection	ECS 120 3b:2 gotchas-multiple union or intersection union dfa string language languages d1 intersection d2 closure star input start switch decidable strings problem concatenation ability gotcha thing From David Doty 1 likes 216 plays 0
08:24 ECS 120 3b:1 DFA intersection (two ways) ECS 120 3b:1 DFA intersection (two ways)	ECS 120 3b:1 DFA intersection (two ways) union intersection operations dfa complement languages compliment construction intersect closure d2 fact sort b. operation d1 column row f2 r1 From David Doty 1 likes 236 plays 0
09:24 ECS 120 3a:4 DFA union proof ECS 120 3a:4 DFA union proof	ECS 120 3a:4 DFA union proof union r2 delta pair r1 sigma element input f2 d2 d1 pairs f1 symbol cross dfa construction proof dfs output From David Doty 1 likes 222 plays 0
10:38 ECS 120 3a:3 DFA union (product construction)… ECS 120 3a:3 DFA union (product construction) example	ECS 120 3a:3 DFA union (product construction) example dfa mod d2 l2 pair languages symbol d1 delta cross pairs union goal l1 notes lecture function transition integer column From David Doty 1 likes 359 plays 0