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Definition df-ub 31983
Description: Define the upper bound relationship functor. See brub 32061 for value. (Contributed by Scott Fenton, 3-May-2018.)
Assertion
Ref Expression
df-ub |- UB R = ( ( _V X. _V ) \ ( ( _V \ R ) o. `' _E ) )
Detailed syntax breakdown of Definition df-ub
StepHypRef Expression
1 cR . . 3 class R
21cub 31959 . 2 class UB R
3 cvv 3200 . . . 4 class _V
43, 3cxp 5112 . . 3 class ( _V X. _V )
53, 1cdif 3571 . . . 4 class ( _V \ R )
6 cep 5028 . . . . 5 class _E
76ccnv 5113 . . . 4 class `' _E
85, 7ccom 5118 . . 3 class ( ( _V \ R ) o. `' _E )
94, 8cdif 3571 . 2 class ( ( _V X. _V ) \ ( ( _V \ R ) o. `' _E ) )
102, 9wceq 1483 1 wff UB R = ( ( _V X. _V ) \ ( ( _V \ R ) o. `' _E ) )
Colors of variables: wff setvar class
This definition is referenced by:  brub  32061
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