Search for tag: "sigma"

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04:57 ECS 220 6c:7.2-1 arithmetical hierarchy ECS 220 6c:7.2-1 arithmetical hierarchy	ECS 220 6c:7.2-1 arithmetical hierarchy sigma pi hierarchy language level languages input string exercise complement subset searches steps exists predicate cetera definition bottom words deck From David Doty on March 21st, 2021 0 likes 12 plays 0
09:43 ECS 220 4a:6.1-2 observations about the… ECS 220 4a:6.1-2 observations about the polynomial hierarchy and the great collapse	ECS 220 4a:6.1-2 observations about the polynomial hierarchy and the great collapse np circuit sigma level inputs quantifier hierarchy exists kp predicate thing input answer words p. fact function power collapse equals From David Doty on March 21st, 2021 0 likes 31 plays 0
11:56 ECS 220 4a:6.1-1 the polynomial hierarchy ECS 220 4a:6.1-1 the polynomial hierarchy	ECS 220 4a:6.1-1 the polynomial hierarchy circuit np exists input quantifiers inputs sigma p2 front computation tree problem move leaves machine negation hierarchy function size predicates From David Doty on March 21st, 2021 0 likes 43 plays 0
08:09 ECS 120 5c:3 formal definition of TM syntax ECS 120 5c:3 formal definition of TM syntax	ECS 120 5c:3 formal definition of TM syntax alphabet element tape input gamma function transition sigma start machine delta blank things turing qa elements symbol head range arrow From David Doty on March 20th, 2021 0 likes 109 plays 0
08:18 ECS 120 4c:1 NFAs can simulate regex_s proof ECS 120 4c:1 NFAs can simulate regex_s proof	ECS 120 4c:1 NFAs can simulate regex_s proof nfa cases expressions language union base expression r2 string star languages r1 element symbol sigma input decidable proof b. concatenation From David Doty on March 20th, 2021 0 likes 86 plays 0
06:39 ECS 120 4b:3 NFAs can simulate RRGs proof ECS 120 4b:3 NFAs can simulate RRGs proof	ECS 120 4b:3 NFAs can simulate RRGs proof epsilon dfa nfa grammar construction rules g. language rule arrow parts start variables sigma transitions terminal variable gamma row determinism From David Doty on March 20th, 2021 0 likes 73 plays 0
07:17 ECS 120 4a:1 introduction to computational… ECS 120 4a:1 introduction to computational equivalence, NFAs can simulate DFAs	ECS 120 4a:1 introduction to computational equivalence, NFAs can simulate DFAs nfa language dfa delta transition function power model instance epsilon output thing observation rejects idea chapter sigma input form transitions From David Doty on March 20th, 2021 0 likes 107 plays 0
04:19 ECS 120 3c:3 NFA concatenation proof ECS 120 3c:3 NFA concatenation proof	ECS 120 3c:3 NFA concatenation proof delta transitions n2 transition union point n1 string f1 start epsilon language f2 s1 sigma picture nfa end switch anna From David Doty on March 20th, 2021 0 likes 77 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 on March 20th, 2021 0 likes 109 plays 0
06:31 ECS 120 2c:5 formal definition of NFA semantics ECS 120 2c:5 formal definition of NFA semantics	ECS 120 2c:5 formal definition of NFA semantics sequence epsilon transitions sequences dfa input delta transition symbol sigma computation length thing nfa arrows element symbols start qam elements From David Doty on March 20th, 2021 0 likes 73 plays 0
03:35 ECS 120 2c:4 listing transitions versus defining… ECS 120 2c:4 listing transitions versus defining transition function	ECS 120 2c:4 listing transitions versus defining transition function transition epsilon function symbol nfa transitions sets thing s. a. head carrot backslash da tech arrow cutie qf label sigma From David Doty on March 20th, 2021 0 likes 73 plays 0
12:21 ECS 120 2c:3 example NFA and states it could reach ECS 120 2c:3 example NFA and states it could reach	ECS 120 2c:3 example NFA and states it could reach input epsilon transition delta nfa thing r1 things transitions output zeros string q1 q0 singleton dfa sigma bit pause start From David Doty on March 20th, 2021 0 likes 99 plays 0
06:24 ECS 120 2c:2 formal definition of NFA syntax ECS 120 2c:2 formal definition of NFA syntax	ECS 120 2c:2 formal definition of NFA syntax delta epsilon transition sigma element input power words transitions output difference symbol q. nfa things dfa alphabet function subset dfs From David Doty on March 20th, 2021 0 likes 100 plays 0
04:03 ECS 120 2b:2 formal definition of CFG syntax ECS 120 2b:2 formal definition of CFG syntax	ECS 120 2b:2 formal definition of CFG syntax element variables gamma side terminals rule rules alphabet row sigma variable symbol convention pair string pause start cfg thing terminal From David Doty on March 20th, 2021 0 likes 107 plays 0
12:59 ECS 120 2a:4 small examples ECS 120 2a:4 small examples	ECS 120 2a:4 small examples errata: At 2:08, I incorrectly identified the set decided by the regex Sigma^* 1 Sigma^*. I said it would be "very similar" to above, but it has an important difference. Assuming Sigma… epsilon star string union strings sigma identity expression symbol words pause concatenation cases alphabet expressions thing algebra middle zeros language From David Doty on March 20th, 2021 0 likes 120 plays 0
07:19 ECS 120 2a:1 regex introduction ECS 120 2a:1 regex introduction	ECS 120 2a:1 regex introduction errata: At 5:56, I say "or any string that starts with a 1", but I should have said "or any string that ends with a 1." expression star language string sigma strings symbol instructions expressions singleton zeros union computer computation model word alphabet symbols pipe pattern From David Doty on March 20th, 2021 0 likes 132 plays 0