ig1peu - Metamath Proof Explorer

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Theorem ig1peu 26027

Description: There is a unique monic polynomial of minimal degree in any nonzero ideal. (Contributed by Stefan O'Rear, 29-Mar-2015.) (Revised by AV, 25-Sep-2020.)

**Hypotheses**
Ref	Expression
ig1peu.p	⊢ 𝑃 = (Poly₁‘𝑅)
ig1peu.u	⊢ 𝑈 = (LIdeal‘𝑃)
ig1peu.z	⊢ 0 = (0_g‘𝑃)
ig1peu.m	⊢ 𝑀 = (Monic_1p‘𝑅)
ig1peu.d	⊢ 𝐷 = ( deg₁ ‘𝑅)

**Assertion**
Ref	Expression
ig1peu	⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → ∃!𝑔 ∈ (𝐼 ∩ 𝑀)(𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ))

Distinct variable groups: 𝐷,𝑔 𝑔,𝐼 𝑔,𝑀 𝑃,𝑔 𝑅,𝑔 𝑈,𝑔 0 ,𝑔

Proof of Theorem ig1peu Dummy variable ℎ is distinct from all other variables.

Step	Hyp	Ref	Expression
1		eqid 2731	. . . . . . . . . . 11 ⊢ (Base‘𝑃) = (Base‘𝑃)
2		ig1peu.u	. . . . . . . . . . 11 ⊢ 𝑈 = (LIdeal‘𝑃)
3	1, 2	lidlss 21067	. . . . . . . . . 10 ⊢ (𝐼 ∈ 𝑈 → 𝐼 ⊆ (Base‘𝑃))
4	3	3ad2ant2 1133	. . . . . . . . 9 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → 𝐼 ⊆ (Base‘𝑃))
5	4	ssdifd 4140	. . . . . . . 8 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → (𝐼 ∖ { 0 }) ⊆ ((Base‘𝑃) ∖ { 0 }))
6		imass2 6101	. . . . . . . 8 ⊢ ((𝐼 ∖ { 0 }) ⊆ ((Base‘𝑃) ∖ { 0 }) → (𝐷 “ (𝐼 ∖ { 0 })) ⊆ (𝐷 “ ((Base‘𝑃) ∖ { 0 })))
7	5, 6	syl 17	. . . . . . 7 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → (𝐷 “ (𝐼 ∖ { 0 })) ⊆ (𝐷 “ ((Base‘𝑃) ∖ { 0 })))
8		drngring 20590	. . . . . . . . 9 ⊢ (𝑅 ∈ DivRing → 𝑅 ∈ Ring)
9	8	3ad2ant1 1132	. . . . . . . 8 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → 𝑅 ∈ Ring)
10		ig1peu.d	. . . . . . . . 9 ⊢ 𝐷 = ( deg₁ ‘𝑅)
11		ig1peu.p	. . . . . . . . 9 ⊢ 𝑃 = (Poly₁‘𝑅)
12		ig1peu.z	. . . . . . . . 9 ⊢ 0 = (0_g‘𝑃)
13	10, 11, 12, 1	deg1n0ima 25945	. . . . . . . 8 ⊢ (𝑅 ∈ Ring → (𝐷 “ ((Base‘𝑃) ∖ { 0 })) ⊆ ℕ₀)
14	9, 13	syl 17	. . . . . . 7 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → (𝐷 “ ((Base‘𝑃) ∖ { 0 })) ⊆ ℕ₀)
15	7, 14	sstrd 3992	. . . . . 6 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → (𝐷 “ (𝐼 ∖ { 0 })) ⊆ ℕ₀)
16		nn0uz 12871	. . . . . 6 ⊢ ℕ₀ = (ℤ_≥‘0)
17	15, 16	sseqtrdi 4032	. . . . 5 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → (𝐷 “ (𝐼 ∖ { 0 })) ⊆ (ℤ_≥‘0))
18	11	ply1ring 22090	. . . . . . . . . 10 ⊢ (𝑅 ∈ Ring → 𝑃 ∈ Ring)
19	9, 18	syl 17	. . . . . . . . 9 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → 𝑃 ∈ Ring)
20		simp2 1136	. . . . . . . . 9 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → 𝐼 ∈ 𝑈)
21	2, 12	lidl0cl 21073	. . . . . . . . 9 ⊢ ((𝑃 ∈ Ring ∧ 𝐼 ∈ 𝑈) → 0 ∈ 𝐼)
22	19, 20, 21	syl2anc 583	. . . . . . . 8 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → 0 ∈ 𝐼)
23	22	snssd 4812	. . . . . . 7 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → { 0 } ⊆ 𝐼)
24		simp3 1137	. . . . . . . 8 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → 𝐼 ≠ { 0 })
25	24	necomd 2995	. . . . . . 7 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → { 0 } ≠ 𝐼)
26		pssdifn0 4365	. . . . . . 7 ⊢ (({ 0 } ⊆ 𝐼 ∧ { 0 } ≠ 𝐼) → (𝐼 ∖ { 0 }) ≠ ∅)
27	23, 25, 26	syl2anc 583	. . . . . 6 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → (𝐼 ∖ { 0 }) ≠ ∅)
28	10, 11, 1	deg1xrf 25937	. . . . . . . . . 10 ⊢ 𝐷:(Base‘𝑃)⟶ℝ^*
29		ffn 6717	. . . . . . . . . 10 ⊢ (𝐷:(Base‘𝑃)⟶ℝ^* → 𝐷 Fn (Base‘𝑃))
30	28, 29	ax-mp 5	. . . . . . . . 9 ⊢ 𝐷 Fn (Base‘𝑃)
31	30	a1i 11	. . . . . . . 8 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → 𝐷 Fn (Base‘𝑃))
32	4	ssdifssd 4142	. . . . . . . 8 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → (𝐼 ∖ { 0 }) ⊆ (Base‘𝑃))
33		fnimaeq0 6683	. . . . . . . 8 ⊢ ((𝐷 Fn (Base‘𝑃) ∧ (𝐼 ∖ { 0 }) ⊆ (Base‘𝑃)) → ((𝐷 “ (𝐼 ∖ { 0 })) = ∅ ↔ (𝐼 ∖ { 0 }) = ∅))
34	31, 32, 33	syl2anc 583	. . . . . . 7 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → ((𝐷 “ (𝐼 ∖ { 0 })) = ∅ ↔ (𝐼 ∖ { 0 }) = ∅))
35	34	necon3bid 2984	. . . . . 6 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → ((𝐷 “ (𝐼 ∖ { 0 })) ≠ ∅ ↔ (𝐼 ∖ { 0 }) ≠ ∅))
36	27, 35	mpbird 257	. . . . 5 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → (𝐷 “ (𝐼 ∖ { 0 })) ≠ ∅)
37		infssuzcl 12923	. . . . 5 ⊢ (((𝐷 “ (𝐼 ∖ { 0 })) ⊆ (ℤ_≥‘0) ∧ (𝐷 “ (𝐼 ∖ { 0 })) ≠ ∅) → inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ∈ (𝐷 “ (𝐼 ∖ { 0 })))
38	17, 36, 37	syl2anc 583	. . . 4 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ∈ (𝐷 “ (𝐼 ∖ { 0 })))
39	31, 32	fvelimabd 6965	. . . 4 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → (inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ∈ (𝐷 “ (𝐼 ∖ { 0 })) ↔ ∃ℎ ∈ (𝐼 ∖ { 0 })(𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < )))
40	38, 39	mpbid 231	. . 3 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → ∃ℎ ∈ (𝐼 ∖ { 0 })(𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ))
41	19	adantr 480	. . . . . . . 8 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → 𝑃 ∈ Ring)
42		simpl2 1191	. . . . . . . 8 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → 𝐼 ∈ 𝑈)
43	9	adantr 480	. . . . . . . . . 10 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → 𝑅 ∈ Ring)
44		eqid 2731	. . . . . . . . . . 11 ⊢ (algSc‘𝑃) = (algSc‘𝑃)
45		eqid 2731	. . . . . . . . . . 11 ⊢ (Base‘𝑅) = (Base‘𝑅)
46	11, 44, 45, 1	ply1sclf 22127	. . . . . . . . . 10 ⊢ (𝑅 ∈ Ring → (algSc‘𝑃):(Base‘𝑅)⟶(Base‘𝑃))
47	43, 46	syl 17	. . . . . . . . 9 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → (algSc‘𝑃):(Base‘𝑅)⟶(Base‘𝑃))
48		simpl1 1190	. . . . . . . . . . . . 13 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → 𝑅 ∈ DivRing)
49	32	sselda 3982	. . . . . . . . . . . . 13 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → ℎ ∈ (Base‘𝑃))
50		eldifsni 4793	. . . . . . . . . . . . . 14 ⊢ (ℎ ∈ (𝐼 ∖ { 0 }) → ℎ ≠ 0 )
51	50	adantl 481	. . . . . . . . . . . . 13 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → ℎ ≠ 0 )
52		eqid 2731	. . . . . . . . . . . . . 14 ⊢ (Unic_1p‘𝑅) = (Unic_1p‘𝑅)
53	11, 1, 12, 52	drnguc1p 26026	. . . . . . . . . . . . 13 ⊢ ((𝑅 ∈ DivRing ∧ ℎ ∈ (Base‘𝑃) ∧ ℎ ≠ 0 ) → ℎ ∈ (Unic_1p‘𝑅))
54	48, 49, 51, 53	syl3anc 1370	. . . . . . . . . . . 12 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → ℎ ∈ (Unic_1p‘𝑅))
55		eqid 2731	. . . . . . . . . . . . 13 ⊢ (Unit‘𝑅) = (Unit‘𝑅)
56	10, 55, 52	uc1pldg 26004	. . . . . . . . . . . 12 ⊢ (ℎ ∈ (Unic_1p‘𝑅) → ((coe₁‘ℎ)‘(𝐷‘ℎ)) ∈ (Unit‘𝑅))
57	54, 56	syl 17	. . . . . . . . . . 11 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → ((coe₁‘ℎ)‘(𝐷‘ℎ)) ∈ (Unit‘𝑅))
58		eqid 2731	. . . . . . . . . . . 12 ⊢ (inv_r‘𝑅) = (inv_r‘𝑅)
59	55, 58	unitinvcl 20288	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ Ring ∧ ((coe₁‘ℎ)‘(𝐷‘ℎ)) ∈ (Unit‘𝑅)) → ((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ))) ∈ (Unit‘𝑅))
60	43, 57, 59	syl2anc 583	. . . . . . . . . 10 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → ((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ))) ∈ (Unit‘𝑅))
61	45, 55	unitcl 20273	. . . . . . . . . 10 ⊢ (((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ))) ∈ (Unit‘𝑅) → ((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ))) ∈ (Base‘𝑅))
62	60, 61	syl 17	. . . . . . . . 9 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → ((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ))) ∈ (Base‘𝑅))
63	47, 62	ffvelcdmd 7087	. . . . . . . 8 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → ((algSc‘𝑃)‘((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ)))) ∈ (Base‘𝑃))
64		eldifi 4126	. . . . . . . . 9 ⊢ (ℎ ∈ (𝐼 ∖ { 0 }) → ℎ ∈ 𝐼)
65	64	adantl 481	. . . . . . . 8 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → ℎ ∈ 𝐼)
66		eqid 2731	. . . . . . . . 9 ⊢ (._r‘𝑃) = (._r‘𝑃)
67	2, 1, 66	lidlmcl 21078	. . . . . . . 8 ⊢ (((𝑃 ∈ Ring ∧ 𝐼 ∈ 𝑈) ∧ (((algSc‘𝑃)‘((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ)))) ∈ (Base‘𝑃) ∧ ℎ ∈ 𝐼)) → (((algSc‘𝑃)‘((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ))))(._r‘𝑃)ℎ) ∈ 𝐼)
68	41, 42, 63, 65, 67	syl22anc 836	. . . . . . 7 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → (((algSc‘𝑃)‘((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ))))(._r‘𝑃)ℎ) ∈ 𝐼)
69		ig1peu.m	. . . . . . . . 9 ⊢ 𝑀 = (Monic_1p‘𝑅)
70	52, 69, 11, 66, 44, 10, 58	uc1pmon1p 26007	. . . . . . . 8 ⊢ ((𝑅 ∈ Ring ∧ ℎ ∈ (Unic_1p‘𝑅)) → (((algSc‘𝑃)‘((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ))))(._r‘𝑃)ℎ) ∈ 𝑀)
71	43, 54, 70	syl2anc 583	. . . . . . 7 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → (((algSc‘𝑃)‘((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ))))(._r‘𝑃)ℎ) ∈ 𝑀)
72	68, 71	elind 4194	. . . . . 6 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → (((algSc‘𝑃)‘((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ))))(._r‘𝑃)ℎ) ∈ (𝐼 ∩ 𝑀))
73		eqid 2731	. . . . . . . . . 10 ⊢ (RLReg‘𝑅) = (RLReg‘𝑅)
74	73, 55	unitrrg 21198	. . . . . . . . 9 ⊢ (𝑅 ∈ Ring → (Unit‘𝑅) ⊆ (RLReg‘𝑅))
75	43, 74	syl 17	. . . . . . . 8 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → (Unit‘𝑅) ⊆ (RLReg‘𝑅))
76	75, 60	sseldd 3983	. . . . . . 7 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → ((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ))) ∈ (RLReg‘𝑅))
77	10, 11, 73, 1, 66, 44	deg1mul3 25971	. . . . . . 7 ⊢ ((𝑅 ∈ Ring ∧ ((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ))) ∈ (RLReg‘𝑅) ∧ ℎ ∈ (Base‘𝑃)) → (𝐷‘(((algSc‘𝑃)‘((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ))))(._r‘𝑃)ℎ)) = (𝐷‘ℎ))
78	43, 76, 49, 77	syl3anc 1370	. . . . . 6 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → (𝐷‘(((algSc‘𝑃)‘((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ))))(._r‘𝑃)ℎ)) = (𝐷‘ℎ))
79		fveqeq2 6900	. . . . . . 7 ⊢ (𝑔 = (((algSc‘𝑃)‘((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ))))(._r‘𝑃)ℎ) → ((𝐷‘𝑔) = (𝐷‘ℎ) ↔ (𝐷‘(((algSc‘𝑃)‘((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ))))(._r‘𝑃)ℎ)) = (𝐷‘ℎ)))
80	79	rspcev 3612	. . . . . 6 ⊢ (((((algSc‘𝑃)‘((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ))))(._r‘𝑃)ℎ) ∈ (𝐼 ∩ 𝑀) ∧ (𝐷‘(((algSc‘𝑃)‘((inv_r‘𝑅)‘((coe₁‘ℎ)‘(𝐷‘ℎ))))(._r‘𝑃)ℎ)) = (𝐷‘ℎ)) → ∃𝑔 ∈ (𝐼 ∩ 𝑀)(𝐷‘𝑔) = (𝐷‘ℎ))
81	72, 78, 80	syl2anc 583	. . . . 5 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → ∃𝑔 ∈ (𝐼 ∩ 𝑀)(𝐷‘𝑔) = (𝐷‘ℎ))
82		eqeq2 2743	. . . . . 6 ⊢ ((𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) → ((𝐷‘𝑔) = (𝐷‘ℎ) ↔ (𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < )))
83	82	rexbidv 3177	. . . . 5 ⊢ ((𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) → (∃𝑔 ∈ (𝐼 ∩ 𝑀)(𝐷‘𝑔) = (𝐷‘ℎ) ↔ ∃𝑔 ∈ (𝐼 ∩ 𝑀)(𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < )))
84	81, 83	syl5ibcom 244	. . . 4 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ ℎ ∈ (𝐼 ∖ { 0 })) → ((𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) → ∃𝑔 ∈ (𝐼 ∩ 𝑀)(𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < )))
85	84	rexlimdva 3154	. . 3 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → (∃ℎ ∈ (𝐼 ∖ { 0 })(𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) → ∃𝑔 ∈ (𝐼 ∩ 𝑀)(𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < )))
86	40, 85	mpd 15	. 2 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → ∃𝑔 ∈ (𝐼 ∩ 𝑀)(𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ))
87		eqid 2731	. . . . . . 7 ⊢ (-_g‘𝑃) = (-_g‘𝑃)
88	9	ad2antrr 723	. . . . . . 7 ⊢ ((((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) ∧ ((𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ∧ (𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ))) → 𝑅 ∈ Ring)
89		simprl 768	. . . . . . . . 9 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → 𝑔 ∈ (𝐼 ∩ 𝑀))
90	89	elin2d 4199	. . . . . . . 8 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → 𝑔 ∈ 𝑀)
91	90	adantr 480	. . . . . . 7 ⊢ ((((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) ∧ ((𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ∧ (𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ))) → 𝑔 ∈ 𝑀)
92		simprl 768	. . . . . . 7 ⊢ ((((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) ∧ ((𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ∧ (𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ))) → (𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ))
93		simprr 770	. . . . . . . . 9 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → ℎ ∈ (𝐼 ∩ 𝑀))
94	93	elin2d 4199	. . . . . . . 8 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → ℎ ∈ 𝑀)
95	94	adantr 480	. . . . . . 7 ⊢ ((((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) ∧ ((𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ∧ (𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ))) → ℎ ∈ 𝑀)
96		simprr 770	. . . . . . 7 ⊢ ((((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) ∧ ((𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ∧ (𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ))) → (𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ))
97	10, 69, 11, 87, 88, 91, 92, 95, 96	deg1submon1p 26008	. . . . . 6 ⊢ ((((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) ∧ ((𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ∧ (𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ))) → (𝐷‘(𝑔(-_g‘𝑃)ℎ)) < inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ))
98	97	ex 412	. . . . 5 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → (((𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ∧ (𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < )) → (𝐷‘(𝑔(-_g‘𝑃)ℎ)) < inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < )))
99	17	ad2antrr 723	. . . . . . . . 9 ⊢ ((((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) ∧ (𝑔(-_g‘𝑃)ℎ) ≠ 0 ) → (𝐷 “ (𝐼 ∖ { 0 })) ⊆ (ℤ_≥‘0))
100	30	a1i 11	. . . . . . . . . 10 ⊢ ((((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) ∧ (𝑔(-_g‘𝑃)ℎ) ≠ 0 ) → 𝐷 Fn (Base‘𝑃))
101	32	ad2antrr 723	. . . . . . . . . 10 ⊢ ((((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) ∧ (𝑔(-_g‘𝑃)ℎ) ≠ 0 ) → (𝐼 ∖ { 0 }) ⊆ (Base‘𝑃))
102	19	adantr 480	. . . . . . . . . . . . 13 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → 𝑃 ∈ Ring)
103		simpl2 1191	. . . . . . . . . . . . 13 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → 𝐼 ∈ 𝑈)
104	89	elin1d 4198	. . . . . . . . . . . . 13 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → 𝑔 ∈ 𝐼)
105	93	elin1d 4198	. . . . . . . . . . . . 13 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → ℎ ∈ 𝐼)
106	2, 87	lidlsubcl 21077	. . . . . . . . . . . . 13 ⊢ (((𝑃 ∈ Ring ∧ 𝐼 ∈ 𝑈) ∧ (𝑔 ∈ 𝐼 ∧ ℎ ∈ 𝐼)) → (𝑔(-_g‘𝑃)ℎ) ∈ 𝐼)
107	102, 103, 104, 105, 106	syl22anc 836	. . . . . . . . . . . 12 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → (𝑔(-_g‘𝑃)ℎ) ∈ 𝐼)
108	107	adantr 480	. . . . . . . . . . 11 ⊢ ((((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) ∧ (𝑔(-_g‘𝑃)ℎ) ≠ 0 ) → (𝑔(-_g‘𝑃)ℎ) ∈ 𝐼)
109		simpr 484	. . . . . . . . . . 11 ⊢ ((((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) ∧ (𝑔(-_g‘𝑃)ℎ) ≠ 0 ) → (𝑔(-_g‘𝑃)ℎ) ≠ 0 )
110		eldifsn 4790	. . . . . . . . . . 11 ⊢ ((𝑔(-_g‘𝑃)ℎ) ∈ (𝐼 ∖ { 0 }) ↔ ((𝑔(-_g‘𝑃)ℎ) ∈ 𝐼 ∧ (𝑔(-_g‘𝑃)ℎ) ≠ 0 ))
111	108, 109, 110	sylanbrc 582	. . . . . . . . . 10 ⊢ ((((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) ∧ (𝑔(-_g‘𝑃)ℎ) ≠ 0 ) → (𝑔(-_g‘𝑃)ℎ) ∈ (𝐼 ∖ { 0 }))
112		fnfvima 7237	. . . . . . . . . 10 ⊢ ((𝐷 Fn (Base‘𝑃) ∧ (𝐼 ∖ { 0 }) ⊆ (Base‘𝑃) ∧ (𝑔(-_g‘𝑃)ℎ) ∈ (𝐼 ∖ { 0 })) → (𝐷‘(𝑔(-_g‘𝑃)ℎ)) ∈ (𝐷 “ (𝐼 ∖ { 0 })))
113	100, 101, 111, 112	syl3anc 1370	. . . . . . . . 9 ⊢ ((((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) ∧ (𝑔(-_g‘𝑃)ℎ) ≠ 0 ) → (𝐷‘(𝑔(-_g‘𝑃)ℎ)) ∈ (𝐷 “ (𝐼 ∖ { 0 })))
114		infssuzle 12922	. . . . . . . . 9 ⊢ (((𝐷 “ (𝐼 ∖ { 0 })) ⊆ (ℤ_≥‘0) ∧ (𝐷‘(𝑔(-_g‘𝑃)ℎ)) ∈ (𝐷 “ (𝐼 ∖ { 0 }))) → inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ≤ (𝐷‘(𝑔(-_g‘𝑃)ℎ)))
115	99, 113, 114	syl2anc 583	. . . . . . . 8 ⊢ ((((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) ∧ (𝑔(-_g‘𝑃)ℎ) ≠ 0 ) → inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ≤ (𝐷‘(𝑔(-_g‘𝑃)ℎ)))
116	115	ex 412	. . . . . . 7 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → ((𝑔(-_g‘𝑃)ℎ) ≠ 0 → inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ≤ (𝐷‘(𝑔(-_g‘𝑃)ℎ))))
117		imassrn 6070	. . . . . . . . . . 11 ⊢ (𝐷 “ (𝐼 ∖ { 0 })) ⊆ ran 𝐷
118		frn 6724	. . . . . . . . . . . 12 ⊢ (𝐷:(Base‘𝑃)⟶ℝ^* → ran 𝐷 ⊆ ℝ^*)
119	28, 118	ax-mp 5	. . . . . . . . . . 11 ⊢ ran 𝐷 ⊆ ℝ^*
120	117, 119	sstri 3991	. . . . . . . . . 10 ⊢ (𝐷 “ (𝐼 ∖ { 0 })) ⊆ ℝ^*
121	120, 38	sselid 3980	. . . . . . . . 9 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ∈ ℝ^*)
122	121	adantr 480	. . . . . . . 8 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ∈ ℝ^*)
123		ringgrp 20139	. . . . . . . . . . . 12 ⊢ (𝑃 ∈ Ring → 𝑃 ∈ Grp)
124	19, 123	syl 17	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → 𝑃 ∈ Grp)
125	124	adantr 480	. . . . . . . . . 10 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → 𝑃 ∈ Grp)
126		inss1 4228	. . . . . . . . . . . . 13 ⊢ (𝐼 ∩ 𝑀) ⊆ 𝐼
127	126, 4	sstrid 3993	. . . . . . . . . . . 12 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → (𝐼 ∩ 𝑀) ⊆ (Base‘𝑃))
128	127	adantr 480	. . . . . . . . . . 11 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → (𝐼 ∩ 𝑀) ⊆ (Base‘𝑃))
129	128, 89	sseldd 3983	. . . . . . . . . 10 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → 𝑔 ∈ (Base‘𝑃))
130	128, 93	sseldd 3983	. . . . . . . . . 10 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → ℎ ∈ (Base‘𝑃))
131	1, 87	grpsubcl 18946	. . . . . . . . . 10 ⊢ ((𝑃 ∈ Grp ∧ 𝑔 ∈ (Base‘𝑃) ∧ ℎ ∈ (Base‘𝑃)) → (𝑔(-_g‘𝑃)ℎ) ∈ (Base‘𝑃))
132	125, 129, 130, 131	syl3anc 1370	. . . . . . . . 9 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → (𝑔(-_g‘𝑃)ℎ) ∈ (Base‘𝑃))
133	10, 11, 1	deg1xrcl 25938	. . . . . . . . 9 ⊢ ((𝑔(-_g‘𝑃)ℎ) ∈ (Base‘𝑃) → (𝐷‘(𝑔(-_g‘𝑃)ℎ)) ∈ ℝ^*)
134	132, 133	syl 17	. . . . . . . 8 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → (𝐷‘(𝑔(-_g‘𝑃)ℎ)) ∈ ℝ^*)
135	122, 134	xrlenltd 11287	. . . . . . 7 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → (inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ≤ (𝐷‘(𝑔(-_g‘𝑃)ℎ)) ↔ ¬ (𝐷‘(𝑔(-_g‘𝑃)ℎ)) < inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < )))
136	116, 135	sylibd 238	. . . . . 6 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → ((𝑔(-_g‘𝑃)ℎ) ≠ 0 → ¬ (𝐷‘(𝑔(-_g‘𝑃)ℎ)) < inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < )))
137	136	necon4ad 2958	. . . . 5 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → ((𝐷‘(𝑔(-_g‘𝑃)ℎ)) < inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) → (𝑔(-_g‘𝑃)ℎ) = 0 ))
138	98, 137	syld 47	. . . 4 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → (((𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ∧ (𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < )) → (𝑔(-_g‘𝑃)ℎ) = 0 ))
139	1, 12, 87	grpsubeq0 18952	. . . . 5 ⊢ ((𝑃 ∈ Grp ∧ 𝑔 ∈ (Base‘𝑃) ∧ ℎ ∈ (Base‘𝑃)) → ((𝑔(-_g‘𝑃)ℎ) = 0 ↔ 𝑔 = ℎ))
140	125, 129, 130, 139	syl3anc 1370	. . . 4 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → ((𝑔(-_g‘𝑃)ℎ) = 0 ↔ 𝑔 = ℎ))
141	138, 140	sylibd 238	. . 3 ⊢ (((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) ∧ (𝑔 ∈ (𝐼 ∩ 𝑀) ∧ ℎ ∈ (𝐼 ∩ 𝑀))) → (((𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ∧ (𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < )) → 𝑔 = ℎ))
142	141	ralrimivva 3199	. 2 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → ∀𝑔 ∈ (𝐼 ∩ 𝑀)∀ℎ ∈ (𝐼 ∩ 𝑀)(((𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ∧ (𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < )) → 𝑔 = ℎ))
143		fveqeq2 6900	. . 3 ⊢ (𝑔 = ℎ → ((𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ↔ (𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < )))
144	143	reu4 3727	. 2 ⊢ (∃!𝑔 ∈ (𝐼 ∩ 𝑀)(𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ↔ (∃𝑔 ∈ (𝐼 ∩ 𝑀)(𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ∧ ∀𝑔 ∈ (𝐼 ∩ 𝑀)∀ℎ ∈ (𝐼 ∩ 𝑀)(((𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ) ∧ (𝐷‘ℎ) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < )) → 𝑔 = ℎ)))
145	86, 142, 144	sylanbrc 582	1 ⊢ ((𝑅 ∈ DivRing ∧ 𝐼 ∈ 𝑈 ∧ 𝐼 ≠ { 0 }) → ∃!𝑔 ∈ (𝐼 ∩ 𝑀)(𝐷‘𝑔) = inf((𝐷 “ (𝐼 ∖ { 0 })), ℝ, < ))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 395 ∧ w3a 1086 = wceq 1540 ∈ wcel 2105 ≠ wne 2939 ∀wral 3060 ∃wrex 3069 ∃!wreu 3373 ∖ cdif 3945 ∩ cin 3947 ⊆ wss 3948 ∅c0 4322 {csn 4628 class class class wbr 5148 ran crn 5677 “ cima 5679 Fn wfn 6538 ⟶wf 6539 ‘cfv 6543 (class class class)co 7412 infcinf 9442 ℝcr 11115 0cc0 11116 ℝ^*cxr 11254 < clt 11255 ≤ cle 11256 ℕ₀cn0 12479 ℤ_≥cuz 12829 Basecbs 17151 ._rcmulr 17205 0_gc0g 17392 Grpcgrp 18861 -_gcsg 18863 Ringcrg 20134 Unitcui 20253 inv_rcinvr 20285 DivRingcdr 20583 LIdealclidl 21017 RLRegcrlreg 21184 algSccascl 21717 Poly₁cpl1 22020 coe₁cco1 22021 deg₁ cdg1 25907 Monic_1pcmn1 25981 Unic_1pcuc1p 25982

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2702 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7729 ax-cnex 11172 ax-resscn 11173 ax-1cn 11174 ax-icn 11175 ax-addcl 11176 ax-addrcl 11177 ax-mulcl 11178 ax-mulrcl 11179 ax-mulcom 11180 ax-addass 11181 ax-mulass 11182 ax-distr 11183 ax-i2m1 11184 ax-1ne0 11185 ax-1rid 11186 ax-rnegex 11187 ax-rrecex 11188 ax-cnre 11189 ax-pre-lttri 11190 ax-pre-lttrn 11191 ax-pre-ltadd 11192 ax-pre-mulgt0 11193 ax-pre-sup 11194 ax-addf 11195 ax-mulf 11196

This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2533 df-eu 2562 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-rmo 3375 df-reu 3376 df-rab 3432 df-v 3475 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-tp 4633 df-op 4635 df-uni 4909 df-int 4951 df-iun 4999 df-iin 5000 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-se 5632 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-isom 6552 df-riota 7368 df-ov 7415 df-oprab 7416 df-mpo 7417 df-of 7674 df-ofr 7675 df-om 7860 df-1st 7979 df-2nd 7980 df-supp 8152 df-tpos 8217 df-frecs 8272 df-wrecs 8303 df-recs 8377 df-rdg 8416 df-1o 8472 df-er 8709 df-map 8828 df-pm 8829 df-ixp 8898 df-en 8946 df-dom 8947 df-sdom 8948 df-fin 8949 df-fsupp 9368 df-sup 9443 df-inf 9444 df-oi 9511 df-card 9940 df-pnf 11257 df-mnf 11258 df-xr 11259 df-ltxr 11260 df-le 11261 df-sub 11453 df-neg 11454 df-nn 12220 df-2 12282 df-3 12283 df-4 12284 df-5 12285 df-6 12286 df-7 12287 df-8 12288 df-9 12289 df-n0 12480 df-z 12566 df-dec 12685 df-uz 12830 df-fz 13492 df-fzo 13635 df-seq 13974 df-hash 14298 df-struct 17087 df-sets 17104 df-slot 17122 df-ndx 17134 df-base 17152 df-ress 17181 df-plusg 17217 df-mulr 17218 df-starv 17219 df-sca 17220 df-vsca 17221 df-ip 17222 df-tset 17223 df-ple 17224 df-ds 17226 df-unif 17227 df-hom 17228 df-cco 17229 df-0g 17394 df-gsum 17395 df-prds 17400 df-pws 17402 df-mre 17537 df-mrc 17538 df-acs 17540 df-mgm 18571 df-sgrp 18650 df-mnd 18666 df-mhm 18711 df-submnd 18712 df-grp 18864 df-minusg 18865 df-sbg 18866 df-mulg 18994 df-subg 19046 df-ghm 19135 df-cntz 19229 df-cmn 19698 df-abl 19699 df-mgp 20036 df-rng 20054 df-ur 20083 df-ring 20136 df-cring 20137 df-oppr 20232 df-dvdsr 20255 df-unit 20256 df-invr 20286 df-subrng 20442 df-subrg 20467 df-drng 20585 df-lmod 20704 df-lss 20775 df-sra 21019 df-rgmod 21020 df-lidl 21021 df-rlreg 21188 df-cnfld 21234 df-ascl 21720 df-psr 21772 df-mvr 21773 df-mpl 21774 df-opsr 21776 df-psr1 22023 df-vr1 22024 df-ply1 22025 df-coe1 22026 df-mdeg 25908 df-deg1 25909 df-mon1 25986 df-uc1p 25987

This theorem is referenced by: ig1pval3 26030

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