Non-deterministic Pushdown Automata The non-deterministic pushdown automata is very much similar to NFA. We will discuss some CFGs which accepts NPDA. The…
Tag:
regexp
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PDA Acceptance A language can be accepted by Pushdown automata using two approaches: 1. Acceptance by Final State: The PDA is said…
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Theory of Automata Theory of automata is a theoretical branch of computer science and mathematical. It is the study of abstract machines…
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Post Correspondence Problem In this section, we will discuss the undecidability of string and not of Turing machines. The undecidability of the…
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Transition Diagram A transition diagram or state transition diagram is a directed graph which can be constructed as follows: There is a…
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Basic Model of Turing machine The turning machine can be modelled with the help of the following representation. 1. The input tape…
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Regular Expression The language accepted by finite automata can be easily described by simple expressions called Regular Expressions. It is the most…
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Transition Table The transition table is basically a tabular representation of the transition function. It takes two arguments (a state and a…
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CFG to PDA Conversion The first symbol on R.H.S. production must be a terminal symbol. The following steps are used to obtain…
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Simplification of CFG As we have seen, various languages can efficiently be represented by a context-free grammar. All the grammar are not…