Let a be a regular expression of length n
Let α be a regular expression of length n. (a) Using procedures shown in class, if we convert α into a regular expression β such that L(β) = L(α). How long β might be? Give a reasonably tight upper bound.
Let α be a regular expression of length n.
(a) Using procedures shown in class, if we convert α into a regular expression β such that L(β) = L(α). How long β might be? Give a reasonably tight upper bound.
What do you understand by the term Finite Automata ?
Give an algorithm that, given a grammar G = (V, Σ, R, S), decides whether the grammar G can derive the empty string.
Describe the theorem that a language L is recognized by a DFA if and only if L is illustrated by a regular expression.
What is the formal definition of DFA ?
Describe the Strategy of TOC computation box in brief ?
How can we characterize DFA languages ?
Proof the theorem that the class of regular languages is closed under union; that is, if L1 is recognized by a NFA and L2 is recognized by a NFA, then L1 υ L2 is recognized by a NFA as well.
Define the term Regular expressions ?
Explain in detail about Homology Modelling
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