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Definition df-pli 9272
Description: Define addition on positive integers. This is a "temporary" set used in the construction of complex numbers df-c 9519, and is intended to be used only by the construction. (Contributed by NM, 26-Aug-1995.) (New usage is discouraged.)
Assertion
Ref Expression
df-pli

Detailed syntax breakdown of Definition df-pli
StepHypRef Expression
1 cpli 9244 . 2
2 coa 7146 . . 3
3 cnpi 9243 . . . 4
43, 3cxp 5002 . . 3
52, 4cres 5006 . 2
61, 5wceq 1395 1
Colors of variables: wff setvar class
This definition is referenced by:  addpiord  9283  dmaddpi  9289
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