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Theorem oppff1 50479
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 50455 . . . 4 oppFunc Fn (V × V)
2 relfunc 18069 . . . . 5 Rel (𝐶 Func 𝐷)
3 df-rel 5663 . . . . 5 (Rel (𝐶 Func 𝐷) ↔ (𝐶 Func 𝐷) ⊆ (V × V))
42, 3mpbi 233 . . . 4 (𝐶 Func 𝐷) ⊆ (V × V)
5 fnssres 6687 . . . 4 (( oppFunc Fn (V × V) ∧ (𝐶 Func 𝐷) ⊆ (V × V)) → ( oppFunc ↾ (𝐶 Func 𝐷)) Fn (𝐶 Func 𝐷))
61, 4, 5mp2an 705 . . 3 ( oppFunc ↾ (𝐶 Func 𝐷)) Fn (𝐶 Func 𝐷)
7 fvres 6930 . . . . 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 50473 . . . . 5 (𝑓 ∈ (𝐶 Func 𝐷) → ( oppFunc ‘𝑓) ∈ (𝑂 Func 𝑃))
127, 11eqeltrd 2864 . . . 4 (𝑓 ∈ (𝐶 Func 𝐷) → (( oppFunc ↾ (𝐶 Func 𝐷))‘𝑓) ∈ (𝑂 Func 𝑃))
1312rgen 3082 . . 3 ∀𝑓 ∈ (𝐶 Func 𝐷)(( oppFunc ↾ (𝐶 Func 𝐷))‘𝑓) ∈ (𝑂 Func 𝑃)
14 ffnfv 7146 . . 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 724 . 2 ( oppFunc ↾ (𝐶 Func 𝐷)):(𝐶 Func 𝐷)⟶(𝑂 Func 𝑃)
16 simpl 488 . . . . . 6 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → 𝑓 ∈ (𝐶 Func 𝐷))
1716fvresd 6931 . . . . 5 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → (( oppFunc ↾ (𝐶 Func 𝐷))‘𝑓) = ( oppFunc ‘𝑓))
18 simpr 490 . . . . . 6 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → 𝑔 ∈ (𝐶 Func 𝐷))
1918fvresd 6931 . . . . 5 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → (( oppFunc ↾ (𝐶 Func 𝐷))‘𝑔) = ( oppFunc ‘𝑔))
2017, 19eqeq12d 2779 . . . 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 6911 . . . . 5 (( oppFunc ‘𝑓) = ( oppFunc ‘𝑔) → ( oppFunc ‘( oppFunc ‘𝑓)) = ( oppFunc ‘( oppFunc ‘𝑔)))
228, 9, 16oppfoppc2 50473 . . . . . . 7 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → ( oppFunc ‘𝑓) ∈ (𝑂 Func 𝑃))
23 relfunc 18069 . . . . . . 7 Rel (𝑂 Func 𝑃)
24 eqid 2763 . . . . . . 7 ( oppFunc ‘𝑓) = ( oppFunc ‘𝑓)
2522, 23, 242oppf 50463 . . . . . 6 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → ( oppFunc ‘( oppFunc ‘𝑓)) = 𝑓)
268, 9, 18oppfoppc2 50473 . . . . . . 7 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → ( oppFunc ‘𝑔) ∈ (𝑂 Func 𝑃))
27 eqid 2763 . . . . . . 7 ( oppFunc ‘𝑔) = ( oppFunc ‘𝑔)
2826, 23, 272oppf 50463 . . . . . 6 ((𝑓 ∈ (𝐶 Func 𝐷) ∧ 𝑔 ∈ (𝐶 Func 𝐷)) → ( oppFunc ‘( oppFunc ‘𝑔)) = 𝑔)
2925, 28eqeq12d 2779 . . . . 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 3206 . 2 ∀𝑓 ∈ (𝐶 Func 𝐷)∀𝑔 ∈ (𝐶 Func 𝐷)((( oppFunc ↾ (𝐶 Func 𝐷))‘𝑓) = (( oppFunc ↾ (𝐶 Func 𝐷))‘𝑔) → 𝑓 = 𝑔)
33 dff13 7284 . 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 724 1 ( oppFunc ↾ (𝐶 Func 𝐷)):(𝐶 Func 𝐷)⟶1-1(𝑂 Func 𝑃)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ∧ wa 401   = wceq 1570   ∈ wcel 2147  ∀wral 3080  Vcvv 3454   ⊆ wss 3900   × cxp 5654   ↾ cres 5658  Rel wrel 5661   Fn wfn 6556  ⟶wf 6557  ⟶1-1wf1 6558  ‘cfv 6561  (class class class)co 7446  oppCatcoppc 17917   Func cfunc 18061   oppFunc coppf 50453
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-10 2180  ax-11 2197  ax-12 2216  ax-ext 2735  ax-rep 5236  ax-sep 5253  ax-nul 5264  ax-pow 5332  ax-pr 5396  ax-un 7778  ax-cnex 11286  ax-resscn 11287  ax-1cn 11288  ax-icn 11289  ax-addcl 11290  ax-addrcl 11291  ax-mulcl 11292  ax-mulrcl 11293  ax-mulcom 11294  ax-addass 11295  ax-mulass 11296  ax-distr 11297  ax-i2m1 11298  ax-1ne0 11299  ax-1rid 11300  ax-rnegex 11301  ax-rrecex 11302  ax-cnre 11303  ax-pre-lttri 11304  ax-pre-lttrn 11305  ax-pre-ltadd 11306  ax-pre-mulgt0 11307
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2102  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ne 2960  df-nel 3066  df-ral 3081  df-rex 3091  df-rmo 3369  df-reu 3370  df-rab 3417  df-v 3456  df-sbc 3743  df-csb 3852  df-ss 3901  df-pss 4017  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4839  df-uni 4871  df-iun 4956  df-br 5107  df-opab 5172  df-mpt 5191  df-tr 5217  df-id 5551  df-eprel 5556  df-po 5564  df-so 5565  df-fr 5609  df-we 5611  df-xp 5662  df-rel 5663  df-cnv 5664  df-co 5665  df-dm 5666  df-rn 5667  df-res 5668  df-ima 5669  df-pred 6325  df-ord 6386  df-on 6387  df-lim 6388  df-suc 6389  df-iota 6515  df-fun 6563  df-fn 6564  df-f 6565  df-f1 6566  df-fo 6567  df-f1o 6568  df-fv 6569  df-riota 7403  df-ov 7449  df-oprab 7450  df-mpo 7451  df-om 7905  df-1st 8028  df-2nd 8029  df-tpos 8274  df-frecs 8330  df-wrecs 8361  df-recs 8410  df-rdg 8449  df-er 8748  df-map 8880  df-ixp 8957  df-en 9005  df-dom 9006  df-sdom 9007  df-pnf 11375  df-mnf 11376  df-xr 11377  df-ltxr 11378  df-le 11379  df-sub 11573  df-neg 11574  df-nn 12366  df-2 12435  df-3 12436  df-4 12437  df-5 12438  df-6 12439  df-7 12440  df-8 12441  df-9 12442  df-n0 12637  df-z 12724  df-dec 12845  df-sets 17374  df-slot 17392  df-ndx 17404  df-base 17420  df-hom 17484  df-cco 17485  df-cat 17874  df-cid 17875  df-oppc 17918  df-func 18065  df-oppf 50454
This theorem is used by:  oppff1o  50480  fucoppcid  50758
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