Syntax Definition cnpi 4972

Description: The set of positive integers, which is the set of natural numbers om 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 5264. The actual set of Dedekind cuts is defined by df-np 5086.

Assertion

Ref	Expression
cnpi	class N.

See definition df-ni 5000 for more information.

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