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Theorem oppff1 49778
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 49754 . . . 4 oppFunc Fn (V × V)
2 relfunc 17907 . . . . 5 Rel (𝐶 Func 𝐷)
3 df-rel 5658 . . . . 5 (Rel (𝐶 Func 𝐷) ↔ (𝐶 Func 𝐷) ⊆ (V × V))
42, 3mpbi 233 . . . 4 (𝐶 Func 𝐷) ⊆ (V × V)
5 fnssres 6648 . . . 4 (( oppFunc Fn (V × V) ∧ (𝐶 Func 𝐷) ⊆ (V × V)) → ( oppFunc ↾ (𝐶 Func 𝐷)) Fn (𝐶 Func 𝐷))
61, 4, 5mp2an 704 . . 3 ( oppFunc ↾ (𝐶 Func 𝐷)) Fn (𝐶 Func 𝐷)
7 fvres 6890 . . . . 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 23 . . . . . 6 (𝑓 ∈ (𝐶 Func 𝐷) → 𝑓 ∈ (𝐶 Func 𝐷))
118, 9, 10oppfoppc2 49772 . . . . 5 (𝑓 ∈ (𝐶 Func 𝐷) → ( oppFunc ‘𝑓) ∈ (𝑂 Func 𝑃))
127, 11eqeltrd 2865 . . . 4 (𝑓 ∈ (𝐶 Func 𝐷) → (( oppFunc ↾ (𝐶 Func 𝐷))‘𝑓) ∈ (𝑂 Func 𝑃))
1312rgen 3081 . . 3 𝑓 ∈ (𝐶 Func 𝐷)(( oppFunc ↾ (𝐶 Func 𝐷))‘𝑓) ∈ (𝑂 Func 𝑃)
14 ffnfv 7104 . . 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 723 . 2 ( oppFunc ↾ (𝐶 Func 𝐷)):(𝐶 Func 𝐷)⟶(𝑂 Func 𝑃)
16 simpl 487 . . . . . 6 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → 𝑓 ∈ (𝐶 Func 𝐷))
1716fvresd 6891 . . . . 5 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → (( oppFunc ↾ (𝐶 Func 𝐷))‘𝑓) = ( oppFunc ‘𝑓))
18 simpr 489 . . . . . 6 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → 𝑔 ∈ (𝐶 Func 𝐷))
1918fvresd 6891 . . . . 5 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → (( oppFunc ↾ (𝐶 Func 𝐷))‘𝑔) = ( oppFunc ‘𝑔))
2017, 19eqeq12d 2781 . . . 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 6871 . . . . 5 (( oppFunc ‘𝑓) = ( oppFunc ‘𝑔) → ( oppFunc ‘( oppFunc ‘𝑓)) = ( oppFunc ‘( oppFunc ‘𝑔)))
228, 9, 16oppfoppc2 49772 . . . . . . 7 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → ( oppFunc ‘𝑓) ∈ (𝑂 Func 𝑃))
23 relfunc 17907 . . . . . . 7 Rel (𝑂 Func 𝑃)
24 eqid 2765 . . . . . . 7 ( oppFunc ‘𝑓) = ( oppFunc ‘𝑓)
2522, 23, 242oppf 49762 . . . . . 6 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → ( oppFunc ‘( oppFunc ‘𝑓)) = 𝑓)
268, 9, 18oppfoppc2 49772 . . . . . . 7 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → ( oppFunc ‘𝑔) ∈ (𝑂 Func 𝑃))
27 eqid 2765 . . . . . . 7 ( oppFunc ‘𝑔) = ( oppFunc ‘𝑔)
2826, 23, 272oppf 49762 . . . . . 6 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → ( oppFunc ‘( oppFunc ‘𝑔)) = 𝑔)
2925, 28eqeq12d 2781 . . . . 5 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → (( oppFunc ‘( oppFunc ‘𝑓)) = ( oppFunc ‘( oppFunc ‘𝑔)) ↔ 𝑓 = 𝑔))
3021, 29imbitrid 247 . . . 4 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → (( oppFunc ‘𝑓) = ( oppFunc ‘𝑔) → 𝑓 = 𝑔))
3120, 30sylbid 243 . . 3 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → ((( oppFunc ↾ (𝐶 Func 𝐷))‘𝑓) = (( oppFunc ↾ (𝐶 Func 𝐷))‘𝑔) → 𝑓 = 𝑔))
3231rgen2 3205 . 2 𝑓 ∈ (𝐶 Func 𝐷)∀𝑔 ∈ (𝐶 Func 𝐷)((( oppFunc ↾ (𝐶 Func 𝐷))‘𝑓) = (( oppFunc ↾ (𝐶 Func 𝐷))‘𝑔) → 𝑓 = 𝑔)
33 dff13 7242 . 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 723 1 ( oppFunc ↾ (𝐶 Func 𝐷)):(𝐶 Func 𝐷)–1-1→(𝑂 Func 𝑃)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 400   = wceq 1563  wcel 2145  wral 3079  Vcvv 3457  wss 3907   × cxp 5649  cres 5653  Rel wrel 5656   Fn wfn 6520  wf 6521  1-1wf1 6522  cfv 6525  (class class class)co 7400  oppCatcoppc 17755   Func cfunc 17899   oppFunc coppf 49752
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1818  ax-4 1832  ax-5 1933  ax-6 1990  ax-7 2031  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2215  ax-ext 2737  ax-rep 5231  ax-sep 5250  ax-nul 5260  ax-pow 5326  ax-pr 5394  ax-un 7722  ax-cnex 11144  ax-resscn 11145  ax-1cn 11146  ax-icn 11147  ax-addcl 11148  ax-addrcl 11149  ax-mulcl 11150  ax-mulrcl 11151  ax-mulcom 11152  ax-addass 11153  ax-mulass 11154  ax-distr 11155  ax-i2m1 11156  ax-1ne0 11157  ax-1rid 11158  ax-rnegex 11159  ax-rrecex 11160  ax-cnre 11161  ax-pre-lttri 11162  ax-pre-lttrn 11163  ax-pre-ltadd 11164  ax-pre-mulgt0 11165
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3or 1102  df-3an 1103  df-tru 1566  df-fal 1576  df-ex 1803  df-nf 1807  df-sb 2094  df-mo 2569  df-eu 2599  df-clab 2744  df-cleq 2757  df-clel 2840  df-nfc 2914  df-ne 2961  df-nel 3065  df-ral 3080  df-rex 3090  df-rmo 3370  df-reu 3371  df-rab 3418  df-v 3459  df-sbc 3748  df-csb 3856  df-dif 3910  df-un 3912  df-in 3914  df-ss 3924  df-pss 3927  df-nul 4289  df-if 4484  df-pw 4560  df-sn 4586  df-pr 4588  df-op 4592  df-uni 4868  df-iun 4953  df-br 5105  df-opab 5167  df-mpt 5186  df-tr 5212  df-id 5546  df-eprel 5551  df-po 5559  df-so 5560  df-fr 5604  df-we 5606  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-rn 5662  df-res 5663  df-ima 5664  df-pred 6291  df-ord 6352  df-on 6353  df-lim 6354  df-suc 6355  df-iota 6481  df-fun 6527  df-fn 6528  df-f 6529  df-f1 6530  df-fo 6531  df-f1o 6532  df-fv 6533  df-riota 7357  df-ov 7403  df-oprab 7404  df-mpo 7405  df-om 7851  df-1st 7974  df-2nd 7975  df-tpos 8210  df-frecs 8266  df-wrecs 8297  df-recs 8346  df-rdg 8385  df-er 8682  df-map 8814  df-ixp 8884  df-en 8932  df-dom 8933  df-sdom 8934  df-pnf 11233  df-mnf 11234  df-xr 11235  df-ltxr 11236  df-le 11237  df-sub 11431  df-neg 11432  df-nn 12222  df-2 12291  df-3 12292  df-4 12293  df-5 12294  df-6 12295  df-7 12296  df-8 12297  df-9 12298  df-n0 12493  df-z 12580  df-dec 12700  df-sets 17212  df-slot 17230  df-ndx 17242  df-base 17258  df-hom 17322  df-cco 17323  df-cat 17712  df-cid 17713  df-oppc 17756  df-func 17903  df-oppf 49753
This theorem is referenced by:  oppff1o  49779  fucoppcid  50038
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