Question

What is its meaning??
​

Answer 1

Answer:

This is a membership sign, given by Giuseppe Peano in 1894..

The symbol ∈ indicates set membership and means “is an element of” so that the statement x∈A means that x is an element of the set A. In other words, x is one of the objects in the collection of (possibly many) objects in the set A.

HOPE SO THIS MAY HELP U