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how many pendulum swings will it take to walk across the classroom?
(c) Can you say that B is decidable? (d) If you somehow know that A is decidable, what can you say about B?
Intuitively, closure of SL 2 under intersection is reasonably easy to see, particularly if one considers the Myhill graphs of the automata. Any path through both graphs will be a
draw pda for l={an,bm,an/m,n>=0} n is in superscript
Normal forms are important because they give us a 'standard' way of rewriting and allow us to compare two apparently different grammars G1 and G2. The two grammars can be shown to
write short notes on decidable and solvable problem
One might assume that non-closure under concatenation would imply non closure under both Kleene- and positive closure, since the concatenation of a language with itself is included
S-->AAA|B A-->aA|B B-->epsilon
Define the following concept with an example: a. Ambiguity in CFG b. Push-Down Automata c. Turing Machine
Consider a water bottle vending machine as a finite–state automaton. This machine is designed to accept coins of Rs. 2 and 5 only. It dispenses a single water bottle as soon as the
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