Definition:Zero (Ordinal)
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This page is about zero ordinal. For other uses, see Zero.
Definition
The zero ordinal, denoted $0$, is the empty set $\O$.
Also see
- Definition:Von Neumann Construction of Natural Numbers, where the zero of the natural numbers is also defined as $\O$
Sources
- 1983: François Le Lionnais and Jean Brette: Les Nombres Remarquables ... (previous): $0$