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Empty Set – Explanation & Examples
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Regular Expressions (RE) Empty set Φ A RE denotes the empty set Empty string λ A RE denotes the set {λ} Symbol a A RE denotes the set {a} Alternation M. -
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Given a non-empty set X, let * : P (X) → P (X) be defined as A * B = (A - B) ∪ (B - A) , - CBSE Class 12 Maths - Learn CBSE Forum
Empty Set - Definition, Notation, Example and Properties of Empty set