Definitions
,
Results
,
Conjectures
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Set of symbols
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Alphabet
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Deduction system
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Theory
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Zermelo-Fraenkel set theory
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Set
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Collection of sets
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Set union
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Successor set
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Inductive set
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Set of inductive sets
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Set of natural numbers
Set of digits
Formulation 0
The
set of digits
is the
D11: Set
\begin{equation} \mathbb{D} : = \{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 \} \end{equation}
Child definitions
»
D217: Set of boolean numbers