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  "body": "\n## Summary\n\nIn mathematics, the **first uncountable ordinal**, traditionally denoted by $\\omega_1$ or sometimes by $\\Omega$, is the smallest [[ordinal number|0RDJK7EQYY]] that is the order type of an uncountable well-ordered set. It is the supremum (least upper bound) of all countable ordinals. In the von Neumann representation, the elements of $\\omega_1$ are the countable ordinals (including finite ordinals), of which there are uncountably many.\n",
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