Theorem elrhmunit 14100

Description: Ring homomorphisms preserve unit elements. (Contributed by Thierry Arnoux, 23-Oct-2017.)

Assertion

Ref	Expression
elrhmunit	⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (𝐹‘𝐴) ∈ (Unit‘𝑆))

Proof of Theorem elrhmunit

Step	Hyp	Ref	Expression
1		simpl 109	. . . 4 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → 𝐹 ∈ (𝑅 RingHom 𝑆))
2		eqidd 2208	. . . . 5 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (Base‘𝑅) = (Base‘𝑅))
3		eqidd 2208	. . . . 5 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (Unit‘𝑅) = (Unit‘𝑅))
4		rhmrcl1 14078	. . . . . . 7 ⊢ (𝐹 ∈ (𝑅 RingHom 𝑆) → 𝑅 ∈ Ring)
5	4	adantr 276	. . . . . 6 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → 𝑅 ∈ Ring)
6		ringsrg 13970	. . . . . 6 ⊢ (𝑅 ∈ Ring → 𝑅 ∈ SRing)
7	5, 6	syl 14	. . . . 5 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → 𝑅 ∈ SRing)
8		simpr 110	. . . . 5 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → 𝐴 ∈ (Unit‘𝑅))
9	2, 3, 7, 8	unitcld 14031	. . . 4 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → 𝐴 ∈ (Base‘𝑅))
10		eqid 2207	. . . . . 6 ⊢ (Base‘𝑅) = (Base‘𝑅)
11		eqid 2207	. . . . . 6 ⊢ (1r‘𝑅) = (1r‘𝑅)
12	10, 11	ringidcl 13943	. . . . 5 ⊢ (𝑅 ∈ Ring → (1r‘𝑅) ∈ (Base‘𝑅))
13	1, 4, 12	3syl 17	. . . 4 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (1r‘𝑅) ∈ (Base‘𝑅))
14		eqidd 2208	. . . . . . 7 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (1r‘𝑅) = (1r‘𝑅))
15		eqidd 2208	. . . . . . 7 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (∥r‘𝑅) = (∥r‘𝑅))
16		eqidd 2208	. . . . . . 7 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (oppr‘𝑅) = (oppr‘𝑅))
17		eqidd 2208	. . . . . . 7 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (∥r‘(oppr‘𝑅)) = (∥r‘(oppr‘𝑅)))
18	3, 14, 15, 16, 17, 7	isunitd 14029	. . . . . 6 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (𝐴 ∈ (Unit‘𝑅) ↔ (𝐴(∥r‘𝑅)(1r‘𝑅) ∧ 𝐴(∥r‘(oppr‘𝑅))(1r‘𝑅))))
19	8, 18	mpbid 147	. . . . 5 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (𝐴(∥r‘𝑅)(1r‘𝑅) ∧ 𝐴(∥r‘(oppr‘𝑅))(1r‘𝑅)))
20	19	simpld 112	. . . 4 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → 𝐴(∥r‘𝑅)(1r‘𝑅))
21		eqid 2207	. . . . 5 ⊢ (∥r‘𝑅) = (∥r‘𝑅)
22		eqid 2207	. . . . 5 ⊢ (∥r‘𝑆) = (∥r‘𝑆)
23	10, 21, 22	rhmdvdsr 14098	. . . 4 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Base‘𝑅) ∧ (1r‘𝑅) ∈ (Base‘𝑅)) ∧ 𝐴(∥r‘𝑅)(1r‘𝑅)) → (𝐹‘𝐴)(∥r‘𝑆)(𝐹‘(1r‘𝑅)))
24	1, 9, 13, 20, 23	syl31anc 1253	. . 3 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (𝐹‘𝐴)(∥r‘𝑆)(𝐹‘(1r‘𝑅)))
25		eqid 2207	. . . . . 6 ⊢ (1r‘𝑆) = (1r‘𝑆)
26	11, 25	rhm1 14090	. . . . 5 ⊢ (𝐹 ∈ (𝑅 RingHom 𝑆) → (𝐹‘(1r‘𝑅)) = (1r‘𝑆))
27	26	breq2d 4072	. . . 4 ⊢ (𝐹 ∈ (𝑅 RingHom 𝑆) → ((𝐹‘𝐴)(∥r‘𝑆)(𝐹‘(1r‘𝑅)) ↔ (𝐹‘𝐴)(∥r‘𝑆)(1r‘𝑆)))
28	27	adantr 276	. . 3 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → ((𝐹‘𝐴)(∥r‘𝑆)(𝐹‘(1r‘𝑅)) ↔ (𝐹‘𝐴)(∥r‘𝑆)(1r‘𝑆)))
29	24, 28	mpbid 147	. 2 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (𝐹‘𝐴)(∥r‘𝑆)(1r‘𝑆))
30		rhmopp 14099	. . . . 5 ⊢ (𝐹 ∈ (𝑅 RingHom 𝑆) → 𝐹 ∈ ((oppr‘𝑅) RingHom (oppr‘𝑆)))
31	30	adantr 276	. . . 4 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → 𝐹 ∈ ((oppr‘𝑅) RingHom (oppr‘𝑆)))
32		eqid 2207	. . . . . . 7 ⊢ (oppr‘𝑅) = (oppr‘𝑅)
33	32, 10	opprbasg 13998	. . . . . 6 ⊢ (𝑅 ∈ Ring → (Base‘𝑅) = (Base‘(oppr‘𝑅)))
34	5, 33	syl 14	. . . . 5 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (Base‘𝑅) = (Base‘(oppr‘𝑅)))
35	9, 34	eleqtrd 2286	. . . 4 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → 𝐴 ∈ (Base‘(oppr‘𝑅)))
36	13, 34	eleqtrd 2286	. . . 4 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (1r‘𝑅) ∈ (Base‘(oppr‘𝑅)))
37	19	simprd 114	. . . 4 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → 𝐴(∥r‘(oppr‘𝑅))(1r‘𝑅))
38		eqid 2207	. . . . 5 ⊢ (Base‘(oppr‘𝑅)) = (Base‘(oppr‘𝑅))
39		eqid 2207	. . . . 5 ⊢ (∥r‘(oppr‘𝑅)) = (∥r‘(oppr‘𝑅))
40		eqid 2207	. . . . 5 ⊢ (∥r‘(oppr‘𝑆)) = (∥r‘(oppr‘𝑆))
41	38, 39, 40	rhmdvdsr 14098	. . . 4 ⊢ (((𝐹 ∈ ((oppr‘𝑅) RingHom (oppr‘𝑆)) ∧ 𝐴 ∈ (Base‘(oppr‘𝑅)) ∧ (1r‘𝑅) ∈ (Base‘(oppr‘𝑅))) ∧ 𝐴(∥r‘(oppr‘𝑅))(1r‘𝑅)) → (𝐹‘𝐴)(∥r‘(oppr‘𝑆))(𝐹‘(1r‘𝑅)))
42	31, 35, 36, 37, 41	syl31anc 1253	. . 3 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (𝐹‘𝐴)(∥r‘(oppr‘𝑆))(𝐹‘(1r‘𝑅)))
43	26	breq2d 4072	. . . 4 ⊢ (𝐹 ∈ (𝑅 RingHom 𝑆) → ((𝐹‘𝐴)(∥r‘(oppr‘𝑆))(𝐹‘(1r‘𝑅)) ↔ (𝐹‘𝐴)(∥r‘(oppr‘𝑆))(1r‘𝑆)))
44	43	adantr 276	. . 3 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → ((𝐹‘𝐴)(∥r‘(oppr‘𝑆))(𝐹‘(1r‘𝑅)) ↔ (𝐹‘𝐴)(∥r‘(oppr‘𝑆))(1r‘𝑆)))
45	42, 44	mpbid 147	. 2 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (𝐹‘𝐴)(∥r‘(oppr‘𝑆))(1r‘𝑆))
46		eqidd 2208	. . 3 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (Unit‘𝑆) = (Unit‘𝑆))
47		eqidd 2208	. . 3 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (1r‘𝑆) = (1r‘𝑆))
48		eqidd 2208	. . 3 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (∥r‘𝑆) = (∥r‘𝑆))
49		eqidd 2208	. . 3 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (oppr‘𝑆) = (oppr‘𝑆))
50		eqidd 2208	. . 3 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (∥r‘(oppr‘𝑆)) = (∥r‘(oppr‘𝑆)))
51		rhmrcl2 14079	. . . . 5 ⊢ (𝐹 ∈ (𝑅 RingHom 𝑆) → 𝑆 ∈ Ring)
52	51	adantr 276	. . . 4 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → 𝑆 ∈ Ring)
53		ringsrg 13970	. . . 4 ⊢ (𝑆 ∈ Ring → 𝑆 ∈ SRing)
54	52, 53	syl 14	. . 3 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → 𝑆 ∈ SRing)
55	46, 47, 48, 49, 50, 54	isunitd 14029	. 2 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → ((𝐹‘𝐴) ∈ (Unit‘𝑆) ↔ ((𝐹‘𝐴)(∥r‘𝑆)(1r‘𝑆) ∧ (𝐹‘𝐴)(∥r‘(oppr‘𝑆))(1r‘𝑆))))
56	29, 45, 55	mpbir2and 947	1 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ (Unit‘𝑅)) → (𝐹‘𝐴) ∈ (Unit‘𝑆))

Syntax hints:   → wi 4   ∧ wa 104   ↔ wb 105   = wceq 1373   ∈ wcel 2178   class class class wbr 4060  ‘cfv 5291  (class class class)co 5969  Basecbs 12993  1_rcur 13882  SRingcsrg 13886  Ringcrg 13919  opp_rcoppr 13990  ∥_rcdsr 14009  Unitcui 14010   RingHom crh 14073

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 615  ax-in2 616  ax-io 711  ax-5 1471  ax-7 1472  ax-gen 1473  ax-ie1 1517  ax-ie2 1518  ax-8 1528  ax-10 1529  ax-11 1530  ax-i12 1531  ax-bndl 1533  ax-4 1534  ax-17 1550  ax-i9 1554  ax-ial 1558  ax-i5r 1559  ax-13 2180  ax-14 2181  ax-ext 2189  ax-coll 4176  ax-sep 4179  ax-nul 4187  ax-pow 4235  ax-pr 4270  ax-un 4499  ax-setind 4604  ax-cnex 8053  ax-resscn 8054  ax-1cn 8055  ax-1re 8056  ax-icn 8057  ax-addcl 8058  ax-addrcl 8059  ax-mulcl 8060  ax-addcom 8062  ax-addass 8064  ax-i2m1 8067  ax-0lt1 8068  ax-0id 8070  ax-rnegex 8071  ax-pre-ltirr 8074  ax-pre-lttrn 8076  ax-pre-ltadd 8078

This theorem depends on definitions:  df-bi 117  df-3an 983  df-tru 1376  df-fal 1379  df-nf 1485  df-sb 1787  df-eu 2058  df-mo 2059  df-clab 2194  df-cleq 2200  df-clel 2203  df-nfc 2339  df-ne 2379  df-nel 2474  df-ral 2491  df-rex 2492  df-reu 2493  df-rmo 2494  df-rab 2495  df-v 2779  df-sbc 3007  df-csb 3103  df-dif 3177  df-un 3179  df-in 3181  df-ss 3188  df-nul 3470  df-pw 3629  df-sn 3650  df-pr 3651  df-op 3653  df-uni 3866  df-int 3901  df-iun 3944  df-br 4061  df-opab 4123  df-mpt 4124  df-id 4359  df-xp 4700  df-rel 4701  df-cnv 4702  df-co 4703  df-dm 4704  df-rn 4705  df-res 4706  df-ima 4707  df-iota 5252  df-fun 5293  df-fn 5294  df-f 5295  df-f1 5296  df-fo 5297  df-f1o 5298  df-fv 5299  df-riota 5924  df-ov 5972  df-oprab 5973  df-mpo 5974  df-1st 6251  df-2nd 6252  df-tpos 6356  df-map 6762  df-pnf 8146  df-mnf 8147  df-ltxr 8149  df-inn 9074  df-2 9132  df-3 9133  df-ndx 12996  df-slot 12997  df-base 12999  df-sets 13000  df-plusg 13083  df-mulr 13084  df-0g 13251  df-mgm 13349  df-sgrp 13395  df-mnd 13410  df-mhm 13452  df-grp 13496  df-minusg 13497  df-ghm 13738  df-cmn 13783  df-abl 13784  df-mgp 13844  df-ur 13883  df-srg 13887  df-ring 13921  df-oppr 13991  df-dvdsr 14012  df-unit 14013  df-rhm 14075

This theorem is referenced by:  rhmunitinv  14101