Theorem rhmdvdsr 13518

Description: A ring homomorphism preserves the divisibility relation. (Contributed by Thierry Arnoux, 22-Oct-2017.)

Hypotheses

Ref	Expression
rhmdvdsr.x	⊢ 𝑋 = (Base‘𝑅)
rhmdvdsr.m	⊢ ∥ = (∥r‘𝑅)
rhmdvdsr.n	⊢ / = (∥r‘𝑆)

Assertion

Ref	Expression
rhmdvdsr	⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → (𝐹‘𝐴) / (𝐹‘𝐵))

Proof of Theorem rhmdvdsr

Dummy variables 𝑦 𝑐 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		simpl1 1002	. . 3 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → 𝐹 ∈ (𝑅 RingHom 𝑆))
2		simpl2 1003	. . 3 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → 𝐴 ∈ 𝑋)
3		rhmdvdsr.x	. . . . 5 ⊢ 𝑋 = (Base‘𝑅)
4		eqid 2189	. . . . 5 ⊢ (Base‘𝑆) = (Base‘𝑆)
5	3, 4	rhmf 13506	. . . 4 ⊢ (𝐹 ∈ (𝑅 RingHom 𝑆) → 𝐹:𝑋⟶(Base‘𝑆))
6	5	ffvelcdmda 5668	. . 3 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋) → (𝐹‘𝐴) ∈ (Base‘𝑆))
7	1, 2, 6	syl2anc 411	. 2 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → (𝐹‘𝐴) ∈ (Base‘𝑆))
8		simpll1 1038	. . . . . 6 ⊢ ((((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) ∧ 𝑐 ∈ 𝑋) → 𝐹 ∈ (𝑅 RingHom 𝑆))
9		simpr 110	. . . . . 6 ⊢ ((((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) ∧ 𝑐 ∈ 𝑋) → 𝑐 ∈ 𝑋)
10	5	ffvelcdmda 5668	. . . . . 6 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝑐 ∈ 𝑋) → (𝐹‘𝑐) ∈ (Base‘𝑆))
11	8, 9, 10	syl2anc 411	. . . . 5 ⊢ ((((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) ∧ 𝑐 ∈ 𝑋) → (𝐹‘𝑐) ∈ (Base‘𝑆))
12	11	ralrimiva 2563	. . . 4 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → ∀𝑐 ∈ 𝑋 (𝐹‘𝑐) ∈ (Base‘𝑆))
13	2	adantr 276	. . . . . . 7 ⊢ ((((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) ∧ 𝑐 ∈ 𝑋) → 𝐴 ∈ 𝑋)
14		eqid 2189	. . . . . . . 8 ⊢ (.r‘𝑅) = (.r‘𝑅)
15		eqid 2189	. . . . . . . 8 ⊢ (.r‘𝑆) = (.r‘𝑆)
16	3, 14, 15	rhmmul 13507	. . . . . . 7 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝑐 ∈ 𝑋 ∧ 𝐴 ∈ 𝑋) → (𝐹‘(𝑐(.r‘𝑅)𝐴)) = ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)))
17	8, 9, 13, 16	syl3anc 1249	. . . . . 6 ⊢ ((((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) ∧ 𝑐 ∈ 𝑋) → (𝐹‘(𝑐(.r‘𝑅)𝐴)) = ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)))
18	17	ralrimiva 2563	. . . . 5 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → ∀𝑐 ∈ 𝑋 (𝐹‘(𝑐(.r‘𝑅)𝐴)) = ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)))
19		simpr 110	. . . . . 6 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → 𝐴 ∥ 𝐵)
20	3	a1i 9	. . . . . . 7 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → 𝑋 = (Base‘𝑅))
21		rhmdvdsr.m	. . . . . . . 8 ⊢ ∥ = (∥r‘𝑅)
22	21	a1i 9	. . . . . . 7 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → ∥ = (∥r‘𝑅))
23		rhmrcl1 13498	. . . . . . . . . 10 ⊢ (𝐹 ∈ (𝑅 RingHom 𝑆) → 𝑅 ∈ Ring)
24	23	3ad2ant1 1020	. . . . . . . . 9 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → 𝑅 ∈ Ring)
25	24	adantr 276	. . . . . . . 8 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → 𝑅 ∈ Ring)
26		ringsrg 13392	. . . . . . . 8 ⊢ (𝑅 ∈ Ring → 𝑅 ∈ SRing)
27	25, 26	syl 14	. . . . . . 7 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → 𝑅 ∈ SRing)
28		eqidd 2190	. . . . . . 7 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → (.r‘𝑅) = (.r‘𝑅))
29	20, 22, 27, 28, 2	dvdsr2d 13438	. . . . . 6 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → (𝐴 ∥ 𝐵 ↔ ∃𝑐 ∈ 𝑋 (𝑐(.r‘𝑅)𝐴) = 𝐵))
30	19, 29	mpbid 147	. . . . 5 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → ∃𝑐 ∈ 𝑋 (𝑐(.r‘𝑅)𝐴) = 𝐵)
31		r19.29 2627	. . . . . 6 ⊢ ((∀𝑐 ∈ 𝑋 (𝐹‘(𝑐(.r‘𝑅)𝐴)) = ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)) ∧ ∃𝑐 ∈ 𝑋 (𝑐(.r‘𝑅)𝐴) = 𝐵) → ∃𝑐 ∈ 𝑋 ((𝐹‘(𝑐(.r‘𝑅)𝐴)) = ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)) ∧ (𝑐(.r‘𝑅)𝐴) = 𝐵))
32		simpl 109	. . . . . . . 8 ⊢ (((𝐹‘(𝑐(.r‘𝑅)𝐴)) = ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)) ∧ (𝑐(.r‘𝑅)𝐴) = 𝐵) → (𝐹‘(𝑐(.r‘𝑅)𝐴)) = ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)))
33		simpr 110	. . . . . . . . 9 ⊢ (((𝐹‘(𝑐(.r‘𝑅)𝐴)) = ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)) ∧ (𝑐(.r‘𝑅)𝐴) = 𝐵) → (𝑐(.r‘𝑅)𝐴) = 𝐵)
34	33	fveq2d 5535	. . . . . . . 8 ⊢ (((𝐹‘(𝑐(.r‘𝑅)𝐴)) = ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)) ∧ (𝑐(.r‘𝑅)𝐴) = 𝐵) → (𝐹‘(𝑐(.r‘𝑅)𝐴)) = (𝐹‘𝐵))
35	32, 34	eqtr3d 2224	. . . . . . 7 ⊢ (((𝐹‘(𝑐(.r‘𝑅)𝐴)) = ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)) ∧ (𝑐(.r‘𝑅)𝐴) = 𝐵) → ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)) = (𝐹‘𝐵))
36	35	reximi 2587	. . . . . 6 ⊢ (∃𝑐 ∈ 𝑋 ((𝐹‘(𝑐(.r‘𝑅)𝐴)) = ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)) ∧ (𝑐(.r‘𝑅)𝐴) = 𝐵) → ∃𝑐 ∈ 𝑋 ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)) = (𝐹‘𝐵))
37	31, 36	syl 14	. . . . 5 ⊢ ((∀𝑐 ∈ 𝑋 (𝐹‘(𝑐(.r‘𝑅)𝐴)) = ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)) ∧ ∃𝑐 ∈ 𝑋 (𝑐(.r‘𝑅)𝐴) = 𝐵) → ∃𝑐 ∈ 𝑋 ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)) = (𝐹‘𝐵))
38	18, 30, 37	syl2anc 411	. . . 4 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → ∃𝑐 ∈ 𝑋 ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)) = (𝐹‘𝐵))
39		r19.29 2627	. . . 4 ⊢ ((∀𝑐 ∈ 𝑋 (𝐹‘𝑐) ∈ (Base‘𝑆) ∧ ∃𝑐 ∈ 𝑋 ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)) = (𝐹‘𝐵)) → ∃𝑐 ∈ 𝑋 ((𝐹‘𝑐) ∈ (Base‘𝑆) ∧ ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)) = (𝐹‘𝐵)))
40	12, 38, 39	syl2anc 411	. . 3 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → ∃𝑐 ∈ 𝑋 ((𝐹‘𝑐) ∈ (Base‘𝑆) ∧ ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)) = (𝐹‘𝐵)))
41		oveq1 5899	. . . . . 6 ⊢ (𝑦 = (𝐹‘𝑐) → (𝑦(.r‘𝑆)(𝐹‘𝐴)) = ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)))
42	41	eqeq1d 2198	. . . . 5 ⊢ (𝑦 = (𝐹‘𝑐) → ((𝑦(.r‘𝑆)(𝐹‘𝐴)) = (𝐹‘𝐵) ↔ ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)) = (𝐹‘𝐵)))
43	42	rspcev 2856	. . . 4 ⊢ (((𝐹‘𝑐) ∈ (Base‘𝑆) ∧ ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)) = (𝐹‘𝐵)) → ∃𝑦 ∈ (Base‘𝑆)(𝑦(.r‘𝑆)(𝐹‘𝐴)) = (𝐹‘𝐵))
44	43	rexlimivw 2603	. . 3 ⊢ (∃𝑐 ∈ 𝑋 ((𝐹‘𝑐) ∈ (Base‘𝑆) ∧ ((𝐹‘𝑐)(.r‘𝑆)(𝐹‘𝐴)) = (𝐹‘𝐵)) → ∃𝑦 ∈ (Base‘𝑆)(𝑦(.r‘𝑆)(𝐹‘𝐴)) = (𝐹‘𝐵))
45	40, 44	syl 14	. 2 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → ∃𝑦 ∈ (Base‘𝑆)(𝑦(.r‘𝑆)(𝐹‘𝐴)) = (𝐹‘𝐵))
46		eqidd 2190	. . 3 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → (Base‘𝑆) = (Base‘𝑆))
47		rhmdvdsr.n	. . . 4 ⊢ / = (∥r‘𝑆)
48	47	a1i 9	. . 3 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → / = (∥r‘𝑆))
49		rhmrcl2 13499	. . . . . 6 ⊢ (𝐹 ∈ (𝑅 RingHom 𝑆) → 𝑆 ∈ Ring)
50	49	3ad2ant1 1020	. . . . 5 ⊢ ((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → 𝑆 ∈ Ring)
51	50	adantr 276	. . . 4 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → 𝑆 ∈ Ring)
52		ringsrg 13392	. . . 4 ⊢ (𝑆 ∈ Ring → 𝑆 ∈ SRing)
53	51, 52	syl 14	. . 3 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → 𝑆 ∈ SRing)
54		eqidd 2190	. . 3 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → (.r‘𝑆) = (.r‘𝑆))
55	46, 48, 53, 54	dvdsrd 13437	. 2 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → ((𝐹‘𝐴) / (𝐹‘𝐵) ↔ ((𝐹‘𝐴) ∈ (Base‘𝑆) ∧ ∃𝑦 ∈ (Base‘𝑆)(𝑦(.r‘𝑆)(𝐹‘𝐴)) = (𝐹‘𝐵))))
56	7, 45, 55	mpbir2and 946	1 ⊢ (((𝐹 ∈ (𝑅 RingHom 𝑆) ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) ∧ 𝐴 ∥ 𝐵) → (𝐹‘𝐴) / (𝐹‘𝐵))

Syntax hints:   → wi 4   ∧ wa 104   ∧ w3a 980   = wceq 1364   ∈ wcel 2160  ∀wral 2468  ∃wrex 2469   class class class wbr 4018  ‘cfv 5232  (class class class)co 5892  Basecbs 12507  ._rcmulr 12583  SRingcsrg 13310  Ringcrg 13343  ∥_rcdsr 13429   RingHom crh 13493

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 710  ax-5 1458  ax-7 1459  ax-gen 1460  ax-ie1 1504  ax-ie2 1505  ax-8 1515  ax-10 1516  ax-11 1517  ax-i12 1518  ax-bndl 1520  ax-4 1521  ax-17 1537  ax-i9 1541  ax-ial 1545  ax-i5r 1546  ax-13 2162  ax-14 2163  ax-ext 2171  ax-coll 4133  ax-sep 4136  ax-pow 4189  ax-pr 4224  ax-un 4448  ax-setind 4551  ax-cnex 7927  ax-resscn 7928  ax-1cn 7929  ax-1re 7930  ax-icn 7931  ax-addcl 7932  ax-addrcl 7933  ax-mulcl 7934  ax-addcom 7936  ax-addass 7938  ax-i2m1 7941  ax-0lt1 7942  ax-0id 7944  ax-rnegex 7945  ax-pre-ltirr 7948  ax-pre-ltadd 7952

This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1367  df-fal 1370  df-nf 1472  df-sb 1774  df-eu 2041  df-mo 2042  df-clab 2176  df-cleq 2182  df-clel 2185  df-nfc 2321  df-ne 2361  df-nel 2456  df-ral 2473  df-rex 2474  df-reu 2475  df-rmo 2476  df-rab 2477  df-v 2754  df-sbc 2978  df-csb 3073  df-dif 3146  df-un 3148  df-in 3150  df-ss 3157  df-nul 3438  df-pw 3592  df-sn 3613  df-pr 3614  df-op 3616  df-uni 3825  df-int 3860  df-iun 3903  df-br 4019  df-opab 4080  df-mpt 4081  df-id 4308  df-xp 4647  df-rel 4648  df-cnv 4649  df-co 4650  df-dm 4651  df-rn 4652  df-res 4653  df-ima 4654  df-iota 5193  df-fun 5234  df-fn 5235  df-f 5236  df-f1 5237  df-fo 5238  df-f1o 5239  df-fv 5240  df-riota 5848  df-ov 5895  df-oprab 5896  df-mpo 5897  df-1st 6160  df-2nd 6161  df-map 6671  df-pnf 8019  df-mnf 8020  df-ltxr 8022  df-inn 8945  df-2 9003  df-3 9004  df-ndx 12510  df-slot 12511  df-base 12513  df-sets 12514  df-plusg 12595  df-mulr 12596  df-0g 12756  df-mgm 12825  df-sgrp 12858  df-mnd 12871  df-mhm 12904  df-grp 12941  df-minusg 12942  df-ghm 13173  df-cmn 13218  df-abl 13219  df-mgp 13268  df-ur 13307  df-srg 13311  df-ring 13345  df-dvdsr 13432  df-rhm 13495

This theorem is referenced by:  elrhmunit  13520