epsilon number

短语

词形变化

epsilon numbers 复数 epsilon numbers

释义与例句

n.
  1. 1.

    Any (necessarily transfinite) ordinal number α such that ω^α = α; (by generalisation) any surreal number that is a fixed point of the exponential map x → ωˣ.

    数学

    2014, Charles C. Pinter, A Book of Set Theory, 2014, Dover, [Revision of 1971 Addison-Wesley edition], page 203, Thus there is at least one epsilon number, namely ε₀; we can easily show, in fact, that ε₀ is the least epsilon number.

词源

From the Greek letter ε (“epsilon”), used to denote the numbers.

来源：wiktionary