Question

what is the epsilon symbol represent

Answer 1

The Greek lowercase epsilon ε, the lunate epsilon symbol ϵ, or the Latin lowercase epsilon ɛ is used as the symbol for. In mathematics (particularly calculus), an arbitrarily small positive quantity is commonly denoted ε; see (ε, δ)-definition of limit.

Answer 2

In mathematics and arbitrarily small quantity is commonly denoted definition of limit