Table of Contents

## How do you convert an NFA with epsilon transitions to a DFA?

How to convert NFA with epsilon to DFA in TOC?

- Step 1 − Consider M={Q, Σ, δ,q0,F) is NFA with ε. We have to convert this NFA with ε to equivalent DFA denoted by.
- Step 2 − We will obtain δ transition on [p1,p2,p3,… pn] for each input.
- Step 3 − The state obtained [p1,p2,p3,… pn] ∈ Q0 .
- The DFA diagram is as follows −

**Why are epsilon transitions used?**

In general, espilon-transitions are used when they are convenient. For example, when constructing an NFA from a regular expression, you start by constructing small parts of the automaton corresponding to parts of the expression. To connect them, you need to put a transition.

**What is transition function of epsilon NFA?**

NFA with ε-moves. Nondeterministic finite automaton with ε-moves (NFA-ε) is a further generalization to NFA. In this kind of automaton, the transition function is additionally defined on the empty string ε.

### Can we convert NFA with epsilon move to NFA without epsilon move?

The 𝛿1 transitions means an ε-closure on 𝛿 moves. Step 3 − Step 2 is repeated for each input symbol and for each state of given NFA. Step 4 − By using the resultant status, the transition table for equivalent NFA without ε can be built.

**How to explain NFA with epsilon transition?**

Explain NFA with epsilon transition. We extend the class of NFAs by allowing instantaneous ε transitions − The automaton may be allowed to change its state without reading the input symbol 2. In diagrams, such transitions are depicted by labeling the appropriate arcs with ε. Note that this does not mean that E has become an input symbol.

**How do you change the state of an automaton without reading?**

The automaton may be allowed to change its state without reading the input symbol 2. In diagrams, such transitions are depicted by labeling the appropriate arcs with ε. Note that this does not mean that E has become an input symbol. On the contrary, we assume that the symbol E does not belong to any alphabet.

## How do we extend the class of NFAs by allowing instantaneous transitions?

We extend the class of NFAs by allowing instantaneous ε transitions − The automaton may be allowed to change its state without reading the input symbol 2. In diagrams, such transitions are depicted by labeling the appropriate arcs with ε. Note that this does not mean that E has become an input symbol.

**What is an epsilon closure in DBMS?**

Epsilon closure for a given state X is a set of states which can be reached from the states X with only (null) or E moves including the state X itself. In other words, £-closure for a state can be obtained by union operation of the £-closure of the states which can be reached from X with a single E move in a recursive manner.