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07:42 Constructing the Pentagon Part 4: The Golden Ratio Constructing the Pentagon Part 4: The Golden Ratio	Constructing the Pentagon Part 4: The Golden Ratio angle triangle length turn side sides triangles ratio mark question root vertex a. minus distance hypotenuse times degree bisector term From jabiello 0 likes 3 plays 0
06:58 Constructing the Pentagon Part 3: Angle properties Constructing the Pentagon Part 3: Angle properties	Constructing the Pentagon Part 3: Angle properties angle length triangle turn degrees tenths distance tenth halves sides pentagon half arc question construction term a. p. times angles From jabiello 0 likes 3 plays 0
49:26 2021-11-17: Approximate Graver-best augmentation,… 2021-11-17: Approximate Graver-best augmentation, Steinitz bound	2021-11-17: Approximate Graver-best augmentation, Steinitz bound Videos and all other materials are copyright 2021 Matthias Köppe and shared as Open Educational Resources subject to the Creative Commons Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)… vectors lambda norm sum trick times basis grave problem bond factor bit a. length sums things element vector integer step From Matthias Koeppe 0 likes 3 plays 0
09:51 ECS 220 7a:7.6-1 counter machine definition and… ECS 220 7a:7.6-1 counter machine definition and examples	ECS 220 7a:7.6-1 counter machine definition and examples counter loop machine times counters increment words decrement machines input lot definition d. b. function a. increments output shorthand test From David Doty 0 likes 90 plays 0
09:25 ECS 220 5b:6.6-4 two lemmas and full proof of… ECS 220 5b:6.6-4 two lemmas and full proof of Ladner_s theorem	ECS 220 5b:6.6-4 two lemmas and full proof of Ladner_s theorem clique strings statement stage steps qi a. y. problem length lemma string input table answer statements language conditions condition return From David Doty 0 likes 20 plays 0
07:35 ECS 220 5b:6.6-2 almost proof of Ladner's… ECS 220 5b:6.6-2 almost proof of Ladner's theorem	ECS 220 5b:6.6-2 almost proof of Ladner's theorem clique stage stages programs q0 strings string output problem x. point reduction np formula proof bees a. input reductions booleans From David Doty 0 likes 22 plays 0
07:45 ECS 220 5b:6.6-1 Ladner's theorem, existence… ECS 220 5b:6.6-1 Ladner's theorem, existence of NP-intermediate problems	ECS 220 5b:6.6-1 Ladner's theorem, existence of NP-intermediate problems problem np string problems theorem length a. answers strings satisfiability evidence complete clique things answer language sac words x. numbers From David Doty 0 likes 30 plays 0
06:50 ECS 220 5a:6.4-4 an oracle making P=NP ECS 220 5a:6.4-4 an oracle making P=NP	ECS 220 5a:6.4-4 an oracle making P=NP oracle input end bits sea c. steps problem a. np answer times queries access query element subroutine step values bets From David Doty 0 likes 30 plays 0
03:07 ECS 220 5a:6.4-3 relativizing proofs ECS 220 5a:6.4-3 relativizing proofs	ECS 220 5a:6.4-3 relativizing proofs oracle proof problems subset a. access arguments simulation classes complexity question np n. running hierarchy fact problem programs property instruction From David Doty 0 likes 28 plays 0
15:52 ECS 120 10b:2 the real numbers are uncountable… ECS 120 10b:2 the real numbers are uncountable and the Continuum Hypothesis	ECS 120 10b:2 the real numbers are uncountable and the Continuum Hypothesis numbers cardinality function power sets subset expansion star hypothesis language statement machine problem continuum move a. digit zeros theory proof From David Doty 0 likes 71 plays 0
05:49 ECS 120 9c:2 N vs. Z ECS 120 9c:2 N vs. Z	ECS 120 9c:2 N vs. Z integers function a. subset maps things words direction arrow element numbers david bounce enumeration notation sort ceiling equals domain pause From David Doty 0 likes 106 plays 0
08:28 ECS 120 9b:1 acceptance problem is undecidable ECS 120 9b:1 acceptance problem is undecidable	ECS 120 9b:1 acceptance problem is undecidable input algorithm string epsilon halts tm a. w. words contradiction problem definition loops function object m. inputs machine turing kind From David Doty 0 likes 271 plays 0
08:41 ECS 120 9a:1 halting problem definition and… ECS 120 9a:1 halting problem definition and Turing-recognizability	ECS 120 9a:1 halting problem definition and Turing-recognizability algorithm input function halts string recognizer python w. language answer problem chapter symbols instance algorithms count a. occurrences candidate lecture From David Doty 0 likes 222 plays 0
02:27 ECS 120 8b:4 how to remember which direction… ECS 120 8b:4 how to remember which direction reductions go	ECS 120 8b:4 how to remember which direction reductions go instance algorithm reduction thing b. function side problem a. hardness direction reductions relationship x. outputs input f. picture sense notation From David Doty 0 likes 162 plays 0
06:53 ECS 120 8b:3 using reductions to bound hardness… ECS 120 8b:3 using reductions to bound hardness of problems	ECS 120 8b:3 using reductions to bound hardness of problems input length algorithm instance answer thing b. cubed contrapositive problems c. decider mb x. function nb proof a. reducible clique From David Doty 0 likes 185 plays 0
11:52 ECS 120 8b:2 definition of polynomial-time… ECS 120 8b:2 definition of polynomial-time reducibility	ECS 120 8b:2 definition of polynomial-time reducibility Errata: starting at 8:30, I show Python code with the function reduction_from_clique_to_independent_set. This should be reduction_from_independent_set_to_clique instead. algorithm clique instance strings reduction b. input graph star problem idea answer a. output function compliment nodes pair requirement difficulty From David Doty 0 likes 236 plays 0