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CreeperBomb (talk | contribs) (Undo revision 678 by Cobsonwabag (talk)) Tag: Undo |
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{{DISPLAYTITLE:\(\omega\)}} |
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Latest revision as of 16:48, 25 March 2024
The ordinal omega, written \(\omega\), is defined as the order type of the natural numbers \(\mathbb N\). As a von Neumann ordinal, it corresponds to the naturals themselves. Note that \(\omega\) is not to be confused with \(\Omega\), a common notation for a much larger ordinal. The existence of \(\omega\) is guaranteed by the axiom of infinity.
Properties[edit | edit source]
- It is the first infinite ordinal.
- It is the first limit ordinal.
- It is considered by some to be the first admissible ordinal.
- Using the von Neumann cardinal assignment, it is equal to \(\aleph_0\).
- It is the smallest ordinal \(\alpha\) such that \(1+\alpha=\alpha\). Every ordinal larger than it has this same property.
- It is the next ordinal after 0 that isn't a successor ordinal.
- It is additively, multiplicatively, and exponentially principal.