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CS254. Automata, Languages, and Computability - Idealized computing
machines, classified by memory devices (finite, counters, stacks,
queues, tapes); the functions they compute and the languages they
process. Simulation, standardization, composition, non determinism.
Regular, context-free, recursive, and recursively enumerable
languages, Standard forms, closure properties, parsing.
Impossibility proofs: pumping theorems and undecidability.
Nondeterministic polynomial time (NP) computability.
Alternative: CS154. Prerequisites: familiarity with computer
programming (e.g. 105 or 106) and mathematical reasoning
(any of Phil.~159, Math 109, Math 120, or CS257A).

4 units, Spr (Floyd) (days? time?)

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