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Theorem ovmpt4g 5710
 Description: Value of a function given by the "maps to" notation. (This is the operation analog of fvmpt2 5704.) (Contributed by NM, 21-Feb-2004.) (Revised by Mario Carneiro, 1-Sep-2015.)
Hypothesis
Ref Expression
ovmpt4g.3 F = (x A, y B C)
Assertion
Ref Expression
ovmpt4g ((x A y B C V) → (xFy) = C)
Distinct variable group:   x,y
Allowed substitution hints:   A(x,y)   B(x,y)   C(x,y)   F(x,y)   V(x,y)

Proof of Theorem ovmpt4g
Dummy variable z is distinct from all other variables.
StepHypRef Expression
1 elisset 2869 . . 3 (C Vz z = C)
2 moeq 3012 . . . . . . 7 ∃*z z = C
32a1i 10 . . . . . 6 ((x A y B) → ∃*z z = C)
4 ovmpt4g.3 . . . . . . 7 F = (x A, y B C)
5 df-mpt2 5654 . . . . . . 7 (x A, y B C) = {x, y, z ((x A y B) z = C)}
64, 5eqtri 2373 . . . . . 6 F = {x, y, z ((x A y B) z = C)}
73, 6ovidi 5594 . . . . 5 ((x A y B) → (z = C → (xFy) = z))
8 eqeq2 2362 . . . . 5 (z = C → ((xFy) = z ↔ (xFy) = C))
97, 8mpbidi 207 . . . 4 ((x A y B) → (z = C → (xFy) = C))
109exlimdv 1636 . . 3 ((x A y B) → (z z = C → (xFy) = C))
111, 10syl5 28 . 2 ((x A y B) → (C V → (xFy) = C))
12113impia 1148 1 ((x A y B C V) → (xFy) = C)
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ∧ wa 358   ∧ w3a 934  ∃wex 1541   = wceq 1642   ∈ wcel 1710  ∃*wmo 2205  (class class class)co 5525  {coprab 5527   ↦ cmpt2 5653 This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1546  ax-5 1557  ax-17 1616  ax-9 1654  ax-8 1675  ax-13 1712  ax-14 1714  ax-6 1729  ax-7 1734  ax-11 1746  ax-12 1925  ax-ext 2334  ax-nin 4078  ax-xp 4079  ax-cnv 4080  ax-1c 4081  ax-sset 4082  ax-si 4083  ax-ins2 4084  ax-ins3 4085  ax-typlower 4086  ax-sn 4087 This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3or 935  df-3an 936  df-nan 1288  df-tru 1319  df-ex 1542  df-nf 1545  df-sb 1649  df-eu 2208  df-mo 2209  df-clab 2340  df-cleq 2346  df-clel 2349  df-nfc 2478  df-ne 2518  df-ral 2619  df-rex 2620  df-reu 2621  df-rmo 2622  df-rab 2623  df-v 2861  df-sbc 3047  df-nin 3211  df-compl 3212  df-in 3213  df-un 3214  df-dif 3215  df-symdif 3216  df-ss 3259  df-pss 3261  df-nul 3551  df-if 3663  df-pw 3724  df-sn 3741  df-pr 3742  df-uni 3892  df-int 3927  df-opk 4058  df-1c 4136  df-pw1 4137  df-uni1 4138  df-xpk 4185  df-cnvk 4186  df-ins2k 4187  df-ins3k 4188  df-imak 4189  df-cok 4190  df-p6 4191  df-sik 4192  df-ssetk 4193  df-imagek 4194  df-idk 4195  df-iota 4339  df-0c 4377  df-addc 4378  df-nnc 4379  df-fin 4380  df-lefin 4440  df-ltfin 4441  df-ncfin 4442  df-tfin 4443  df-evenfin 4444  df-oddfin 4445  df-sfin 4446  df-spfin 4447  df-phi 4565  df-op 4566  df-proj1 4567  df-proj2 4568  df-opab 4623  df-br 4640  df-co 4726  df-ima 4727  df-id 4767  df-cnv 4785  df-rn 4786  df-dm 4787  df-fun 4789  df-fv 4795  df-ov 5526  df-oprab 5528  df-mpt2 5654 This theorem is referenced by:  ov2gf  5711
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