Nondeterministic Tape Bounded Turing Machines

accepts the input algorithm Berkeley Berkeley Berkeley Berkeley Berkeley LIBRARY Berkely bounded Turing machine CALIFORNIA Berkeley Berkeley CALIFORNIA LIBRARY codings of threadable complexity classes computation of ZN context-sensitive language crossing sequence Definition deterministic machine deterministic Turing machine finite alphabet finite control follows function L(n goal room head scanning ID of ZN ID's infinite maze infinite successor cycle input tape ith digit k-adic representation Lemma linear bounded automaton M₂ machine which accepts machine within storage machine ZD maze is threadable maze recognizing automaton mk+1 nondeterministic machine nondeterministic Turing machine northeast corner notation Pebble in room precisely the threadable proof of Theorem R₁ registers room number set of pebbles simulating Sk+1 square start room storage L(n storage log₂n storage proportionate storage tape successor function symbol tape bounded Turing Theorem 1.3 threadable mazes threading u₂ UNIVERSITY OF CALIFORNIA zero pebble mra ZN accepts