In 1984, W . Maass and M . Li and P . M . B . Vitanyi showed that the simulation of two work tapes by one work tape of a Turing machine takes \ Theta ( n ^ 2 ) time queues, deterministically and nondeterministically, were proven with the incompressibiity method.
22.
They are also equivalent to read-only Turing machines that use only a constant amount of space on their work tape, since any constant amount of information can be incorporated into the finite control state via a product construction ( a state for each combination of work tape state and control state ).
23.
In a move similar to the recent Beatles studio reunion to create the song " Free as a Bird " from a work tape by John Lennon, the surviving members of the Doors plan to reunite in the studio this month to record a new song using a similar tape by Jim Morrison.
24.
And if the new band led by Krist Novoselic of Nirvana, Sweet 75, doesn't hit paydirt when its debut album is released this fall, he and the former Nirvana drummer Dave Grohl just may be pulling out an old work tape of Kurt Cobain's to record a new Nirvana song, just as the Beatles did last year with a John Lennon tape.
