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01:25:00 ECS20 - W22 - Lecture 17 (9T): Counting 2 ECS20 - W22 - Lecture 17 (9T): Counting 2	ECS20 - W22 - Lecture 17 (9T): Counting 2 Lecture 2022-03-01. Review of counting principles. Then, another day of examples, these leading to probability calculations. times ways balls numbers cards probability universe factorial elements strings subsets log answer length From Phil Rogaway 0 likes 71 plays 0
01:21:36 ECS20 - W22 - Lecture 5 (3T): Proofs ECS20 - W22 - Lecture 5 (3T): Proofs	ECS20 - W22 - Lecture 5 (3T): Proofs Online lecture from 1/19/2022. Sundry proofs, chosen to illustrate recurring ideas and themes. I had prepared 11 examples, and we got through 8 of them. Also included some general comments on… proofs contradiction assume contrapositve tic-tac-toe cases clever natural counterexample exist rigor proof problem root thing men numbers partners balls face claim problems card triangle times kind point things half From Phil Rogaway 0 likes 128 plays 0
09:41 env200c New Institutionalism env200c New Institutionalism	env200c New Institutionalism New vs. old institutionalism, what are institutions anwyays? things institutions institutionalism rules constraints structures purpose sorts sort baseball idea expectations players ways organizations institution pennies problem power balls From Tyler Scott 0 likes 31 plays 0