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Theorem rngoisoco 35419
Description: The composition of two ring isomorphisms is a ring isomorphism. (Contributed by Jeff Madsen, 16-Jun-2011.)
Assertion
Ref Expression
rngoisoco (((𝑅 ∈ RingOps ∧ 𝑆 ∈ RingOps ∧ 𝑇 ∈ RingOps) ∧ (𝐹 ∈ (𝑅 RngIso 𝑆) ∧ 𝐺 ∈ (𝑆 RngIso 𝑇))) → (𝐺𝐹) ∈ (𝑅 RngIso 𝑇))

Proof of Theorem rngoisoco
StepHypRef Expression
1 rngoisohom 35417 . . . . . 6 ((𝑅 ∈ RingOps ∧ 𝑆 ∈ RingOps ∧ 𝐹 ∈ (𝑅 RngIso 𝑆)) → 𝐹 ∈ (𝑅 RngHom 𝑆))
213expa 1115 . . . . 5 (((𝑅 ∈ RingOps ∧ 𝑆 ∈ RingOps) ∧ 𝐹 ∈ (𝑅 RngIso 𝑆)) → 𝐹 ∈ (𝑅 RngHom 𝑆))
323adantl3 1165 . . . 4 (((𝑅 ∈ RingOps ∧ 𝑆 ∈ RingOps ∧ 𝑇 ∈ RingOps) ∧ 𝐹 ∈ (𝑅 RngIso 𝑆)) → 𝐹 ∈ (𝑅 RngHom 𝑆))
4 rngoisohom 35417 . . . . . 6 ((𝑆 ∈ RingOps ∧ 𝑇 ∈ RingOps ∧ 𝐺 ∈ (𝑆 RngIso 𝑇)) → 𝐺 ∈ (𝑆 RngHom 𝑇))
543expa 1115 . . . . 5 (((𝑆 ∈ RingOps ∧ 𝑇 ∈ RingOps) ∧ 𝐺 ∈ (𝑆 RngIso 𝑇)) → 𝐺 ∈ (𝑆 RngHom 𝑇))
653adantl1 1163 . . . 4 (((𝑅 ∈ RingOps ∧ 𝑆 ∈ RingOps ∧ 𝑇 ∈ RingOps) ∧ 𝐺 ∈ (𝑆 RngIso 𝑇)) → 𝐺 ∈ (𝑆 RngHom 𝑇))
73, 6anim12dan 621 . . 3 (((𝑅 ∈ RingOps ∧ 𝑆 ∈ RingOps ∧ 𝑇 ∈ RingOps) ∧ (𝐹 ∈ (𝑅 RngIso 𝑆) ∧ 𝐺 ∈ (𝑆 RngIso 𝑇))) → (𝐹 ∈ (𝑅 RngHom 𝑆) ∧ 𝐺 ∈ (𝑆 RngHom 𝑇)))
8 rngohomco 35411 . . 3 (((𝑅 ∈ RingOps ∧ 𝑆 ∈ RingOps ∧ 𝑇 ∈ RingOps) ∧ (𝐹 ∈ (𝑅 RngHom 𝑆) ∧ 𝐺 ∈ (𝑆 RngHom 𝑇))) → (𝐺𝐹) ∈ (𝑅 RngHom 𝑇))
97, 8syldan 594 . 2 (((𝑅 ∈ RingOps ∧ 𝑆 ∈ RingOps ∧ 𝑇 ∈ RingOps) ∧ (𝐹 ∈ (𝑅 RngIso 𝑆) ∧ 𝐺 ∈ (𝑆 RngIso 𝑇))) → (𝐺𝐹) ∈ (𝑅 RngHom 𝑇))
10 eqid 2801 . . . . . . 7 (1st𝑆) = (1st𝑆)
11 eqid 2801 . . . . . . 7 ran (1st𝑆) = ran (1st𝑆)
12 eqid 2801 . . . . . . 7 (1st𝑇) = (1st𝑇)
13 eqid 2801 . . . . . . 7 ran (1st𝑇) = ran (1st𝑇)
1410, 11, 12, 13rngoiso1o 35416 . . . . . 6 ((𝑆 ∈ RingOps ∧ 𝑇 ∈ RingOps ∧ 𝐺 ∈ (𝑆 RngIso 𝑇)) → 𝐺:ran (1st𝑆)–1-1-onto→ran (1st𝑇))
15143expa 1115 . . . . 5 (((𝑆 ∈ RingOps ∧ 𝑇 ∈ RingOps) ∧ 𝐺 ∈ (𝑆 RngIso 𝑇)) → 𝐺:ran (1st𝑆)–1-1-onto→ran (1st𝑇))
16153adantl1 1163 . . . 4 (((𝑅 ∈ RingOps ∧ 𝑆 ∈ RingOps ∧ 𝑇 ∈ RingOps) ∧ 𝐺 ∈ (𝑆 RngIso 𝑇)) → 𝐺:ran (1st𝑆)–1-1-onto→ran (1st𝑇))
1716adantrl 715 . . 3 (((𝑅 ∈ RingOps ∧ 𝑆 ∈ RingOps ∧ 𝑇 ∈ RingOps) ∧ (𝐹 ∈ (𝑅 RngIso 𝑆) ∧ 𝐺 ∈ (𝑆 RngIso 𝑇))) → 𝐺:ran (1st𝑆)–1-1-onto→ran (1st𝑇))
18 eqid 2801 . . . . . . 7 (1st𝑅) = (1st𝑅)
19 eqid 2801 . . . . . . 7 ran (1st𝑅) = ran (1st𝑅)
2018, 19, 10, 11rngoiso1o 35416 . . . . . 6 ((𝑅 ∈ RingOps ∧ 𝑆 ∈ RingOps ∧ 𝐹 ∈ (𝑅 RngIso 𝑆)) → 𝐹:ran (1st𝑅)–1-1-onto→ran (1st𝑆))
21203expa 1115 . . . . 5 (((𝑅 ∈ RingOps ∧ 𝑆 ∈ RingOps) ∧ 𝐹 ∈ (𝑅 RngIso 𝑆)) → 𝐹:ran (1st𝑅)–1-1-onto→ran (1st𝑆))
22213adantl3 1165 . . . 4 (((𝑅 ∈ RingOps ∧ 𝑆 ∈ RingOps ∧ 𝑇 ∈ RingOps) ∧ 𝐹 ∈ (𝑅 RngIso 𝑆)) → 𝐹:ran (1st𝑅)–1-1-onto→ran (1st𝑆))
2322adantrr 716 . . 3 (((𝑅 ∈ RingOps ∧ 𝑆 ∈ RingOps ∧ 𝑇 ∈ RingOps) ∧ (𝐹 ∈ (𝑅 RngIso 𝑆) ∧ 𝐺 ∈ (𝑆 RngIso 𝑇))) → 𝐹:ran (1st𝑅)–1-1-onto→ran (1st𝑆))
24 f1oco 6616 . . 3 ((𝐺:ran (1st𝑆)–1-1-onto→ran (1st𝑇) ∧ 𝐹:ran (1st𝑅)–1-1-onto→ran (1st𝑆)) → (𝐺𝐹):ran (1st𝑅)–1-1-onto→ran (1st𝑇))
2517, 23, 24syl2anc 587 . 2 (((𝑅 ∈ RingOps ∧ 𝑆 ∈ RingOps ∧ 𝑇 ∈ RingOps) ∧ (𝐹 ∈ (𝑅 RngIso 𝑆) ∧ 𝐺 ∈ (𝑆 RngIso 𝑇))) → (𝐺𝐹):ran (1st𝑅)–1-1-onto→ran (1st𝑇))
2618, 19, 12, 13isrngoiso 35415 . . . 4 ((𝑅 ∈ RingOps ∧ 𝑇 ∈ RingOps) → ((𝐺𝐹) ∈ (𝑅 RngIso 𝑇) ↔ ((𝐺𝐹) ∈ (𝑅 RngHom 𝑇) ∧ (𝐺𝐹):ran (1st𝑅)–1-1-onto→ran (1st𝑇))))
27263adant2 1128 . . 3 ((𝑅 ∈ RingOps ∧ 𝑆 ∈ RingOps ∧ 𝑇 ∈ RingOps) → ((𝐺𝐹) ∈ (𝑅 RngIso 𝑇) ↔ ((𝐺𝐹) ∈ (𝑅 RngHom 𝑇) ∧ (𝐺𝐹):ran (1st𝑅)–1-1-onto→ran (1st𝑇))))
2827adantr 484 . 2 (((𝑅 ∈ RingOps ∧ 𝑆 ∈ RingOps ∧ 𝑇 ∈ RingOps) ∧ (𝐹 ∈ (𝑅 RngIso 𝑆) ∧ 𝐺 ∈ (𝑆 RngIso 𝑇))) → ((𝐺𝐹) ∈ (𝑅 RngIso 𝑇) ↔ ((𝐺𝐹) ∈ (𝑅 RngHom 𝑇) ∧ (𝐺𝐹):ran (1st𝑅)–1-1-onto→ran (1st𝑇))))
299, 25, 28mpbir2and 712 1 (((𝑅 ∈ RingOps ∧ 𝑆 ∈ RingOps ∧ 𝑇 ∈ RingOps) ∧ (𝐹 ∈ (𝑅 RngIso 𝑆) ∧ 𝐺 ∈ (𝑆 RngIso 𝑇))) → (𝐺𝐹) ∈ (𝑅 RngIso 𝑇))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 209  wa 399  w3a 1084  wcel 2112  ran crn 5524  ccom 5527  1-1-ontowf1o 6327  cfv 6328  (class class class)co 7139  1st c1st 7673  RingOpscrngo 35331   RngHom crnghom 35397   RngIso crngiso 35398
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 2114  ax-9 2122  ax-10 2143  ax-11 2159  ax-12 2176  ax-ext 2773  ax-sep 5170  ax-nul 5177  ax-pow 5234  ax-pr 5298  ax-un 7445
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2601  df-eu 2632  df-clab 2780  df-cleq 2794  df-clel 2873  df-nfc 2941  df-ne 2991  df-ral 3114  df-rex 3115  df-reu 3116  df-rmo 3117  df-rab 3118  df-v 3446  df-sbc 3724  df-csb 3832  df-dif 3887  df-un 3889  df-in 3891  df-ss 3901  df-nul 4247  df-if 4429  df-pw 4502  df-sn 4529  df-pr 4531  df-op 4535  df-uni 4804  df-iun 4886  df-br 5034  df-opab 5096  df-mpt 5114  df-id 5428  df-xp 5529  df-rel 5530  df-cnv 5531  df-co 5532  df-dm 5533  df-rn 5534  df-res 5535  df-ima 5536  df-iota 6287  df-fun 6330  df-fn 6331  df-f 6332  df-f1 6333  df-fo 6334  df-f1o 6335  df-fv 6336  df-riota 7097  df-ov 7142  df-oprab 7143  df-mpo 7144  df-1st 7675  df-2nd 7676  df-map 8395  df-grpo 28280  df-gid 28281  df-ablo 28332  df-ass 35280  df-exid 35282  df-mgmOLD 35286  df-sgrOLD 35298  df-mndo 35304  df-rngo 35332  df-rngohom 35400  df-rngoiso 35413
This theorem is referenced by:  riscer  35425
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