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Syntax Definition cnpi 9243
Description: The set of positive integers, which is the set of natural numbers with 0 removed.

Note: This is the start of the Dedekind-cut construction of real and complex numbers. The last lemma of the construction is mulcnsrec 9542. The actual set of Dedekind cuts is defined by df-np 9380.

Ref Expression

See definition df-ni 9271 for more information.

Colors of variables: wff setvar class
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