Mathbox for Thierry Arnoux < Previous   Next > Nearby theorems Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  fmptco1f1o Structured version   Visualization version   GIF version

Theorem fmptco1f1o 30490
 Description: The action of composing (to the right) with a bijection is itself a bijection of functions. (Contributed by Thierry Arnoux, 3-Jan-2021.)
Hypotheses
Ref Expression
fmptco1f1o.a 𝐴 = (𝑅m 𝐸)
fmptco1f1o.b 𝐵 = (𝑅m 𝐷)
fmptco1f1o.f 𝐹 = (𝑓𝐴 ↦ (𝑓𝑇))
fmptco1f1o.d (𝜑𝐷𝑉)
fmptco1f1o.e (𝜑𝐸𝑊)
fmptco1f1o.r (𝜑𝑅𝑋)
fmptco1f1o.t (𝜑𝑇:𝐷1-1-onto𝐸)
Assertion
Ref Expression
fmptco1f1o (𝜑𝐹:𝐴1-1-onto𝐵)
Distinct variable groups:   𝐴,𝑓   𝐵,𝑓   𝑇,𝑓   𝜑,𝑓
Allowed substitution hints:   𝐷(𝑓)   𝑅(𝑓)   𝐸(𝑓)   𝐹(𝑓)   𝑉(𝑓)   𝑊(𝑓)   𝑋(𝑓)

Proof of Theorem fmptco1f1o
Dummy variable 𝑔 is distinct from all other variables.
StepHypRef Expression
1 fmptco1f1o.f . . . 4 𝐹 = (𝑓𝐴 ↦ (𝑓𝑇))
21a1i 11 . . 3 (𝜑𝐹 = (𝑓𝐴 ↦ (𝑓𝑇)))
3 fmptco1f1o.r . . . . . 6 (𝜑𝑅𝑋)
43adantr 484 . . . . 5 ((𝜑𝑓𝐴) → 𝑅𝑋)
5 fmptco1f1o.d . . . . . 6 (𝜑𝐷𝑉)
65adantr 484 . . . . 5 ((𝜑𝑓𝐴) → 𝐷𝑉)
7 simpr 488 . . . . . . . 8 ((𝜑𝑓𝐴) → 𝑓𝐴)
8 fmptco1f1o.a . . . . . . . 8 𝐴 = (𝑅m 𝐸)
97, 8eleqtrdi 2862 . . . . . . 7 ((𝜑𝑓𝐴) → 𝑓 ∈ (𝑅m 𝐸))
10 elmapi 8438 . . . . . . 7 (𝑓 ∈ (𝑅m 𝐸) → 𝑓:𝐸𝑅)
119, 10syl 17 . . . . . 6 ((𝜑𝑓𝐴) → 𝑓:𝐸𝑅)
12 fmptco1f1o.t . . . . . . . 8 (𝜑𝑇:𝐷1-1-onto𝐸)
13 f1of 6602 . . . . . . . 8 (𝑇:𝐷1-1-onto𝐸𝑇:𝐷𝐸)
1412, 13syl 17 . . . . . . 7 (𝜑𝑇:𝐷𝐸)
1514adantr 484 . . . . . 6 ((𝜑𝑓𝐴) → 𝑇:𝐷𝐸)
16 fco 6516 . . . . . 6 ((𝑓:𝐸𝑅𝑇:𝐷𝐸) → (𝑓𝑇):𝐷𝑅)
1711, 15, 16syl2anc 587 . . . . 5 ((𝜑𝑓𝐴) → (𝑓𝑇):𝐷𝑅)
18 elmapg 8429 . . . . . 6 ((𝑅𝑋𝐷𝑉) → ((𝑓𝑇) ∈ (𝑅m 𝐷) ↔ (𝑓𝑇):𝐷𝑅))
1918biimpar 481 . . . . 5 (((𝑅𝑋𝐷𝑉) ∧ (𝑓𝑇):𝐷𝑅) → (𝑓𝑇) ∈ (𝑅m 𝐷))
204, 6, 17, 19syl21anc 836 . . . 4 ((𝜑𝑓𝐴) → (𝑓𝑇) ∈ (𝑅m 𝐷))
21 fmptco1f1o.b . . . 4 𝐵 = (𝑅m 𝐷)
2220, 21eleqtrrdi 2863 . . 3 ((𝜑𝑓𝐴) → (𝑓𝑇) ∈ 𝐵)
233adantr 484 . . . . 5 ((𝜑𝑔𝐵) → 𝑅𝑋)
24 fmptco1f1o.e . . . . . 6 (𝜑𝐸𝑊)
2524adantr 484 . . . . 5 ((𝜑𝑔𝐵) → 𝐸𝑊)
26 simpr 488 . . . . . . . 8 ((𝜑𝑔𝐵) → 𝑔𝐵)
2726, 21eleqtrdi 2862 . . . . . . 7 ((𝜑𝑔𝐵) → 𝑔 ∈ (𝑅m 𝐷))
28 elmapi 8438 . . . . . . 7 (𝑔 ∈ (𝑅m 𝐷) → 𝑔:𝐷𝑅)
2927, 28syl 17 . . . . . 6 ((𝜑𝑔𝐵) → 𝑔:𝐷𝑅)
30 f1ocnv 6614 . . . . . . . 8 (𝑇:𝐷1-1-onto𝐸𝑇:𝐸1-1-onto𝐷)
31 f1of 6602 . . . . . . . 8 (𝑇:𝐸1-1-onto𝐷𝑇:𝐸𝐷)
3212, 30, 313syl 18 . . . . . . 7 (𝜑𝑇:𝐸𝐷)
3332adantr 484 . . . . . 6 ((𝜑𝑔𝐵) → 𝑇:𝐸𝐷)
34 fco 6516 . . . . . 6 ((𝑔:𝐷𝑅𝑇:𝐸𝐷) → (𝑔𝑇):𝐸𝑅)
3529, 33, 34syl2anc 587 . . . . 5 ((𝜑𝑔𝐵) → (𝑔𝑇):𝐸𝑅)
36 elmapg 8429 . . . . . 6 ((𝑅𝑋𝐸𝑊) → ((𝑔𝑇) ∈ (𝑅m 𝐸) ↔ (𝑔𝑇):𝐸𝑅))
3736biimpar 481 . . . . 5 (((𝑅𝑋𝐸𝑊) ∧ (𝑔𝑇):𝐸𝑅) → (𝑔𝑇) ∈ (𝑅m 𝐸))
3823, 25, 35, 37syl21anc 836 . . . 4 ((𝜑𝑔𝐵) → (𝑔𝑇) ∈ (𝑅m 𝐸))
3938, 8eleqtrrdi 2863 . . 3 ((𝜑𝑔𝐵) → (𝑔𝑇) ∈ 𝐴)
40 coass 6095 . . . . . . 7 ((𝑔𝑇) ∘ 𝑇) = (𝑔 ∘ (𝑇𝑇))
4112ad2antrr 725 . . . . . . . . 9 (((𝜑𝑓𝐴) ∧ 𝑔𝐵) → 𝑇:𝐷1-1-onto𝐸)
42 f1ococnv1 6630 . . . . . . . . . 10 (𝑇:𝐷1-1-onto𝐸 → (𝑇𝑇) = ( I ↾ 𝐷))
4342coeq2d 5702 . . . . . . . . 9 (𝑇:𝐷1-1-onto𝐸 → (𝑔 ∘ (𝑇𝑇)) = (𝑔 ∘ ( I ↾ 𝐷)))
4441, 43syl 17 . . . . . . . 8 (((𝜑𝑓𝐴) ∧ 𝑔𝐵) → (𝑔 ∘ (𝑇𝑇)) = (𝑔 ∘ ( I ↾ 𝐷)))
4529adantlr 714 . . . . . . . . 9 (((𝜑𝑓𝐴) ∧ 𝑔𝐵) → 𝑔:𝐷𝑅)
46 fcoi1 6537 . . . . . . . . 9 (𝑔:𝐷𝑅 → (𝑔 ∘ ( I ↾ 𝐷)) = 𝑔)
4745, 46syl 17 . . . . . . . 8 (((𝜑𝑓𝐴) ∧ 𝑔𝐵) → (𝑔 ∘ ( I ↾ 𝐷)) = 𝑔)
4844, 47eqtrd 2793 . . . . . . 7 (((𝜑𝑓𝐴) ∧ 𝑔𝐵) → (𝑔 ∘ (𝑇𝑇)) = 𝑔)
4940, 48syl5req 2806 . . . . . 6 (((𝜑𝑓𝐴) ∧ 𝑔𝐵) → 𝑔 = ((𝑔𝑇) ∘ 𝑇))
5049eqeq1d 2760 . . . . 5 (((𝜑𝑓𝐴) ∧ 𝑔𝐵) → (𝑔 = (𝑓𝑇) ↔ ((𝑔𝑇) ∘ 𝑇) = (𝑓𝑇)))
51 eqcom 2765 . . . . . 6 (((𝑔𝑇) ∘ 𝑇) = (𝑓𝑇) ↔ (𝑓𝑇) = ((𝑔𝑇) ∘ 𝑇))
5251a1i 11 . . . . 5 (((𝜑𝑓𝐴) ∧ 𝑔𝐵) → (((𝑔𝑇) ∘ 𝑇) = (𝑓𝑇) ↔ (𝑓𝑇) = ((𝑔𝑇) ∘ 𝑇)))
53 f1ofo 6609 . . . . . . 7 (𝑇:𝐷1-1-onto𝐸𝑇:𝐷onto𝐸)
5441, 53syl 17 . . . . . 6 (((𝜑𝑓𝐴) ∧ 𝑔𝐵) → 𝑇:𝐷onto𝐸)
55 simplr 768 . . . . . . . 8 (((𝜑𝑓𝐴) ∧ 𝑔𝐵) → 𝑓𝐴)
5655, 8eleqtrdi 2862 . . . . . . 7 (((𝜑𝑓𝐴) ∧ 𝑔𝐵) → 𝑓 ∈ (𝑅m 𝐸))
57 elmapfn 8447 . . . . . . 7 (𝑓 ∈ (𝑅m 𝐸) → 𝑓 Fn 𝐸)
5856, 57syl 17 . . . . . 6 (((𝜑𝑓𝐴) ∧ 𝑔𝐵) → 𝑓 Fn 𝐸)
59 elmapfn 8447 . . . . . . . 8 ((𝑔𝑇) ∈ (𝑅m 𝐸) → (𝑔𝑇) Fn 𝐸)
6038, 59syl 17 . . . . . . 7 ((𝜑𝑔𝐵) → (𝑔𝑇) Fn 𝐸)
6160adantlr 714 . . . . . 6 (((𝜑𝑓𝐴) ∧ 𝑔𝐵) → (𝑔𝑇) Fn 𝐸)
62 cocan2 7040 . . . . . 6 ((𝑇:𝐷onto𝐸𝑓 Fn 𝐸 ∧ (𝑔𝑇) Fn 𝐸) → ((𝑓𝑇) = ((𝑔𝑇) ∘ 𝑇) ↔ 𝑓 = (𝑔𝑇)))
6354, 58, 61, 62syl3anc 1368 . . . . 5 (((𝜑𝑓𝐴) ∧ 𝑔𝐵) → ((𝑓𝑇) = ((𝑔𝑇) ∘ 𝑇) ↔ 𝑓 = (𝑔𝑇)))
6450, 52, 633bitrrd 309 . . . 4 (((𝜑𝑓𝐴) ∧ 𝑔𝐵) → (𝑓 = (𝑔𝑇) ↔ 𝑔 = (𝑓𝑇)))
6564anasss 470 . . 3 ((𝜑 ∧ (𝑓𝐴𝑔𝐵)) → (𝑓 = (𝑔𝑇) ↔ 𝑔 = (𝑓𝑇)))
662, 22, 39, 65f1o3d 30484 . 2 (𝜑 → (𝐹:𝐴1-1-onto𝐵𝐹 = (𝑔𝐵 ↦ (𝑔𝑇))))
6766simpld 498 1 (𝜑𝐹:𝐴1-1-onto𝐵)
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ↔ wb 209   ∧ wa 399   = wceq 1538   ∈ wcel 2111   ↦ cmpt 5112   I cid 5429  ◡ccnv 5523   ↾ cres 5526   ∘ ccom 5528   Fn wfn 6330  ⟶wf 6331  –onto→wfo 6333  –1-1-onto→wf1o 6334  (class class class)co 7150   ↑m cmap 8416 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 1911  ax-6 1970  ax-7 2015  ax-8 2113  ax-9 2121  ax-10 2142  ax-11 2158  ax-12 2175  ax-ext 2729  ax-sep 5169  ax-nul 5176  ax-pow 5234  ax-pr 5298  ax-un 7459 This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-fal 1551  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2557  df-eu 2588  df-clab 2736  df-cleq 2750  df-clel 2830  df-nfc 2901  df-ne 2952  df-ral 3075  df-rex 3076  df-rab 3079  df-v 3411  df-sbc 3697  df-csb 3806  df-dif 3861  df-un 3863  df-in 3865  df-ss 3875  df-nul 4226  df-if 4421  df-pw 4496  df-sn 4523  df-pr 4525  df-op 4529  df-uni 4799  df-iun 4885  df-br 5033  df-opab 5095  df-mpt 5113  df-id 5430  df-xp 5530  df-rel 5531  df-cnv 5532  df-co 5533  df-dm 5534  df-rn 5535  df-res 5536  df-ima 5537  df-iota 6294  df-fun 6337  df-fn 6338  df-f 6339  df-f1 6340  df-fo 6341  df-f1o 6342  df-fv 6343  df-ov 7153  df-oprab 7154  df-mpo 7155  df-1st 7693  df-2nd 7694  df-map 8418 This theorem is referenced by:  reprpmtf1o  32125
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