Given Σ, then the Kleene Star Closure of the alphabet Σ, denoted by Σ*, is the collection of all STRINGS defined over Σ, INCLUDING Λ.

Plus Operation is same as Kleene Star Closure except that it does not generate Λ (null string), AUTOMATICALLY.

Given Σ, then the Kleene Star Closure of the alphabet Σ, denoted by Σ*, is the collection of all strings defined over Σ, including Λ.

Plus Operation is same as Kleene Star Closure except that it does not generate Λ (null string), automatically.

You can USE other SYMBOL for alphabet but we are mostly use sigma symbol.

Given Σ, then the Kleene Star Closure of the alphabet Σ, denoted by Σ*, is the collection of all strings defined over Σ, including Λ.

Plus Operation is same as Kleene Star Closure except that it does not generate Λ (null string), automatically.

Given Σ, then the Kleene Star Closure of the alphabet Σ, denoted by Σ*, is the collection of all strings defined over Σ, including Λ.

Plus Operation is same as Kleene Star Closure except that it does not generate Λ (null string), automatically.

You can use other symbol for alphabet but we are mostly use sigma symbol.