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Definition df-swap 4724
Description: Define a function that swaps the two elements of an ordered pair. (Contributed by SF, 5-Jan-2015.)
Assertion
Ref Expression
df-swap Swap
Distinct variable group:   ,,,

Detailed syntax breakdown of Definition df-swap
StepHypRef Expression
1 cswap 4718 . 2 Swap
2 vx . . . . . . . 8
32cv 1641 . . . . . . 7
4 vz . . . . . . . . 9
54cv 1641 . . . . . . . 8
6 vw . . . . . . . . 9
76cv 1641 . . . . . . . 8
85, 7cop 4561 . . . . . . 7
93, 8wceq 1642 . . . . . 6
10 vy . . . . . . . 8
1110cv 1641 . . . . . . 7
127, 5cop 4561 . . . . . . 7
1311, 12wceq 1642 . . . . . 6
149, 13wa 358 . . . . 5
1514, 6wex 1541 . . . 4
1615, 4wex 1541 . . 3
1716, 2, 10copab 4622 . 2
181, 17wceq 1642 1 Swap
Colors of variables: wff setvar class
This definition is referenced by:  elswap  4740  brswap2  4860  brswap  5509  dfswap3  5728
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