Tag: automata theory languages and computation tutorial

Find the regular expression for the set of strings with either no '1' preceding a '0' or no '0' preceding a '1', over {0,...

Find out the regular expression for the set of strings of a's, b's and c's (aaa, aab, .. .. .. .., ccc). Solution: We have the...

This is 2nd Part of Regular expression in theory of computation solved examples. You can also read Regular expression in theory of computation solved examples...

Determine the regular expression for all strings containing exactly one 'a' over ∑ = {a, b, c}. Solution: We have the input alphabets are ∑ =...

Instantaneous Description (ID) is an informal notation of how a PDA "computes" a input string and make a decision that string is accepted or...

Representation of Pushdown automata: The pushdown automaton is represented by the following types; 1. Transaction function of pushdown automata: 2. Graphical Notation of pushdown automata (PDA): Transaction functions...

In Pushdown automata the stack head always scans the top symbol of the stack. It performs two basic operations. Push Operations: Push operations add a...

Pushdown Automata Informal Definition: The pushdown automaton is in essence a nondeterministic finite automata with ε-moves permitted and one additional stack capability on which it can...

The description of Context-Free Languages (CFL) by means of context-free grammars is convenient, as illustrated by the use of BNF (Baucus Normal Form) in...

Ambiguous Grammar / Ambiguous Languages: A CFG is said to be ambiguous if and only if it contains more than one derivation trees for same...