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Definition df-lti 6462
Description: Define 'less than' 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, 6-Feb-1996.)
Assertion
Ref Expression
df-lti  |-  <N  =  (  _E  i^i  ( N.  X.  N. ) )

Detailed syntax breakdown of Definition df-lti
StepHypRef Expression
1 clti 6430 . 2  class  <N
2 cep 4051 . . 3  class  _E
3 cnpi 6427 . . . 4  class  N.
43, 3cxp 4370 . . 3  class  ( N. 
X.  N. )
52, 4cin 2943 . 2  class  (  _E 
i^i  ( N.  X.  N. ) )
61, 5wceq 1259 1  wff  <N  =  (  _E  i^i  ( N.  X.  N. ) )
Colors of variables: wff set class
This definition is referenced by:  ltpiord  6474  ltrelpi  6479
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