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Theorem oppff1 49501
Description: The operation generating opposite functors is injective. (Contributed by Zhi Wang, 17-Nov-2025.)
Hypotheses
Ref Expression
oppff1.o 𝑂 = (oppCat‘𝐶)
oppff1.p 𝑃 = (oppCat‘𝐷)
Assertion
Ref Expression
oppff1 ( oppFunc ↾ (𝐶 Func 𝐷)):(𝐶 Func 𝐷)–1-1→(𝑂 Func 𝑃)

Proof of Theorem oppff1
Dummy variables 𝑓 𝑔 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 oppffn 49477 . . . 4 oppFunc Fn (V × V)
2 relfunc 17798 . . . . 5 Rel (𝐶 Func 𝐷)
3 df-rel 5639 . . . . 5 (Rel (𝐶 Func 𝐷) ↔ (𝐶 Func 𝐷) ⊆ (V × V))
42, 3mpbi 230 . . . 4 (𝐶 Func 𝐷) ⊆ (V × V)
5 fnssres 6623 . . . 4 (( oppFunc Fn (V × V) ∧ (𝐶 Func 𝐷) ⊆ (V × V)) → ( oppFunc ↾ (𝐶 Func 𝐷)) Fn (𝐶 Func 𝐷))
61, 4, 5mp2an 693 . . 3 ( oppFunc ↾ (𝐶 Func 𝐷)) Fn (𝐶 Func 𝐷)
7 fvres 6861 . . . . 5 (𝑓 ∈ (𝐶 Func 𝐷) → (( oppFunc ↾ (𝐶 Func 𝐷))‘𝑓) = ( oppFunc ‘𝑓))
8 oppff1.o . . . . . 6 𝑂 = (oppCat‘𝐶)
9 oppff1.p . . . . . 6 𝑃 = (oppCat‘𝐷)
10 id 22 . . . . . 6 (𝑓 ∈ (𝐶 Func 𝐷) → 𝑓 ∈ (𝐶 Func 𝐷))
118, 9, 10oppfoppc2 49495 . . . . 5 (𝑓 ∈ (𝐶 Func 𝐷) → ( oppFunc ‘𝑓) ∈ (𝑂 Func 𝑃))
127, 11eqeltrd 2837 . . . 4 (𝑓 ∈ (𝐶 Func 𝐷) → (( oppFunc ↾ (𝐶 Func 𝐷))‘𝑓) ∈ (𝑂 Func 𝑃))
1312rgen 3054 . . 3 𝑓 ∈ (𝐶 Func 𝐷)(( oppFunc ↾ (𝐶 Func 𝐷))‘𝑓) ∈ (𝑂 Func 𝑃)
14 ffnfv 7073 . . 3 (( oppFunc ↾ (𝐶 Func 𝐷)):(𝐶 Func 𝐷)⟶(𝑂 Func 𝑃) ↔ (( oppFunc ↾ (𝐶 Func 𝐷)) Fn (𝐶 Func 𝐷) ∧ ∀𝑓 ∈ (𝐶 Func 𝐷)(( oppFunc ↾ (𝐶 Func 𝐷))‘𝑓) ∈ (𝑂 Func 𝑃)))
156, 13, 14mpbir2an 712 . 2 ( oppFunc ↾ (𝐶 Func 𝐷)):(𝐶 Func 𝐷)⟶(𝑂 Func 𝑃)
16 simpl 482 . . . . . 6 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → 𝑓 ∈ (𝐶 Func 𝐷))
1716fvresd 6862 . . . . 5 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → (( oppFunc ↾ (𝐶 Func 𝐷))‘𝑓) = ( oppFunc ‘𝑓))
18 simpr 484 . . . . . 6 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → 𝑔 ∈ (𝐶 Func 𝐷))
1918fvresd 6862 . . . . 5 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → (( oppFunc ↾ (𝐶 Func 𝐷))‘𝑔) = ( oppFunc ‘𝑔))
2017, 19eqeq12d 2753 . . . 4 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → ((( oppFunc ↾ (𝐶 Func 𝐷))‘𝑓) = (( oppFunc ↾ (𝐶 Func 𝐷))‘𝑔) ↔ ( oppFunc ‘𝑓) = ( oppFunc ‘𝑔)))
21 fveq2 6842 . . . . 5 (( oppFunc ‘𝑓) = ( oppFunc ‘𝑔) → ( oppFunc ‘( oppFunc ‘𝑓)) = ( oppFunc ‘( oppFunc ‘𝑔)))
228, 9, 16oppfoppc2 49495 . . . . . . 7 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → ( oppFunc ‘𝑓) ∈ (𝑂 Func 𝑃))
23 relfunc 17798 . . . . . . 7 Rel (𝑂 Func 𝑃)
24 eqid 2737 . . . . . . 7 ( oppFunc ‘𝑓) = ( oppFunc ‘𝑓)
2522, 23, 242oppf 49485 . . . . . 6 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → ( oppFunc ‘( oppFunc ‘𝑓)) = 𝑓)
268, 9, 18oppfoppc2 49495 . . . . . . 7 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → ( oppFunc ‘𝑔) ∈ (𝑂 Func 𝑃))
27 eqid 2737 . . . . . . 7 ( oppFunc ‘𝑔) = ( oppFunc ‘𝑔)
2826, 23, 272oppf 49485 . . . . . 6 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → ( oppFunc ‘( oppFunc ‘𝑔)) = 𝑔)
2925, 28eqeq12d 2753 . . . . 5 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → (( oppFunc ‘( oppFunc ‘𝑓)) = ( oppFunc ‘( oppFunc ‘𝑔)) ↔ 𝑓 = 𝑔))
3021, 29imbitrid 244 . . . 4 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → (( oppFunc ‘𝑓) = ( oppFunc ‘𝑔) → 𝑓 = 𝑔))
3120, 30sylbid 240 . . 3 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → ((( oppFunc ↾ (𝐶 Func 𝐷))‘𝑓) = (( oppFunc ↾ (𝐶 Func 𝐷))‘𝑔) → 𝑓 = 𝑔))
3231rgen2 3178 . 2 𝑓 ∈ (𝐶 Func 𝐷)∀𝑔 ∈ (𝐶 Func 𝐷)((( oppFunc ↾ (𝐶 Func 𝐷))‘𝑓) = (( oppFunc ↾ (𝐶 Func 𝐷))‘𝑔) → 𝑓 = 𝑔)
33 dff13 7210 . 2 (( oppFunc ↾ (𝐶 Func 𝐷)):(𝐶 Func 𝐷)–1-1→(𝑂 Func 𝑃) ↔ (( oppFunc ↾ (𝐶 Func 𝐷)):(𝐶 Func 𝐷)⟶(𝑂 Func 𝑃) ∧ ∀𝑓 ∈ (𝐶 Func 𝐷)∀𝑔 ∈ (𝐶 Func 𝐷)((( oppFunc ↾ (𝐶 Func 𝐷))‘𝑓) = (( oppFunc ↾ (𝐶 Func 𝐷))‘𝑔) → 𝑓 = 𝑔)))
3415, 32, 33mpbir2an 712 1 ( oppFunc ↾ (𝐶 Func 𝐷)):(𝐶 Func 𝐷)–1-1→(𝑂 Func 𝑃)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395   = wceq 1542  wcel 2114  wral 3052  Vcvv 3442  wss 3903   × cxp 5630  cres 5634  Rel wrel 5637   Fn wfn 6495  wf 6496  1-1wf1 6497  cfv 6500  (class class class)co 7368  oppCatcoppc 17646   Func cfunc 17790   oppFunc coppf 49475
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-rep 5226  ax-sep 5243  ax-nul 5253  ax-pow 5312  ax-pr 5379  ax-un 7690  ax-cnex 11094  ax-resscn 11095  ax-1cn 11096  ax-icn 11097  ax-addcl 11098  ax-addrcl 11099  ax-mulcl 11100  ax-mulrcl 11101  ax-mulcom 11102  ax-addass 11103  ax-mulass 11104  ax-distr 11105  ax-i2m1 11106  ax-1ne0 11107  ax-1rid 11108  ax-rnegex 11109  ax-rrecex 11110  ax-cnre 11111  ax-pre-lttri 11112  ax-pre-lttrn 11113  ax-pre-ltadd 11114  ax-pre-mulgt0 11115
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3or 1088  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ne 2934  df-nel 3038  df-ral 3053  df-rex 3063  df-rmo 3352  df-reu 3353  df-rab 3402  df-v 3444  df-sbc 3743  df-csb 3852  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-pss 3923  df-nul 4288  df-if 4482  df-pw 4558  df-sn 4583  df-pr 4585  df-op 4589  df-uni 4866  df-iun 4950  df-br 5101  df-opab 5163  df-mpt 5182  df-tr 5208  df-id 5527  df-eprel 5532  df-po 5540  df-so 5541  df-fr 5585  df-we 5587  df-xp 5638  df-rel 5639  df-cnv 5640  df-co 5641  df-dm 5642  df-rn 5643  df-res 5644  df-ima 5645  df-pred 6267  df-ord 6328  df-on 6329  df-lim 6330  df-suc 6331  df-iota 6456  df-fun 6502  df-fn 6503  df-f 6504  df-f1 6505  df-fo 6506  df-f1o 6507  df-fv 6508  df-riota 7325  df-ov 7371  df-oprab 7372  df-mpo 7373  df-om 7819  df-1st 7943  df-2nd 7944  df-tpos 8178  df-frecs 8233  df-wrecs 8264  df-recs 8313  df-rdg 8351  df-er 8645  df-map 8777  df-ixp 8848  df-en 8896  df-dom 8897  df-sdom 8898  df-pnf 11180  df-mnf 11181  df-xr 11182  df-ltxr 11183  df-le 11184  df-sub 11378  df-neg 11379  df-nn 12158  df-2 12220  df-3 12221  df-4 12222  df-5 12223  df-6 12224  df-7 12225  df-8 12226  df-9 12227  df-n0 12414  df-z 12501  df-dec 12620  df-sets 17103  df-slot 17121  df-ndx 17133  df-base 17149  df-hom 17213  df-cco 17214  df-cat 17603  df-cid 17604  df-oppc 17647  df-func 17794  df-oppf 49476
This theorem is referenced by:  oppff1o  49502  fucoppcid  49761
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