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ε (EN)
lettera, simbolo

lettera “ε”

ε, epsilon
  1. la quinta lettera dell'alfabeto greco (epsilon)
    In Greek writing, words like "ἐλπίς" (hope) begin with an ε.

simbolo “ε”

ε
  1. (mathematica) un numero positivo arbitrariamente piccolo
    In calculus, we let ε be as small as needed to make the function values close to the limit.