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U+2115.svg
U+2115, ℕ
DOUBLE-STRUCK CAPITAL N

[U+2114]
Letterlike Symbols
[U+2116]

Translingual[edit]

Etymology[edit]

The capital "N" is used this way in Formulario mathematico (1894) by Giuseppe Peano. The usage of blackboard bold dates to the 1960s.

Symbol[edit]

  1. (mathematics) The set of natural numbers, which may either include zero or not.

Derived terms[edit]