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Definition df-mi 6290
Description: Define multiplication on positive integers. This is a "temporary" set used in the construction of complex numbers and is intended to be used only by the construction. (Contributed by NM, 26-Aug-1995.)
Assertion
Ref Expression
df-mi  .N  .o  |`  N.  X.  N.

Detailed syntax breakdown of Definition df-mi
StepHypRef Expression
1 cmi 6258 . 2  .N
2 comu 5938 . . 3  .o
3 cnpi 6256 . . . 4  N.
43, 3cxp 4286 . . 3  N. 
X.  N.
52, 4cres 4290 . 2  .o  |`  N.  X.  N.
61, 5wceq 1242 1  .N  .o  |`  N.  X.  N.
Colors of variables: wff set class
This definition is referenced by:  mulpiord  6301  dmmulpi  6310
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