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Theorem mndodconglem 19450

Description: Lemma for mndodcong 19451. (Contributed by Mario Carneiro, 23-Sep-2015.)

**Hypotheses**
Ref	Expression
odcl.1	⊢ 𝑋 = (Base‘𝐺)
odcl.2	⊢ 𝑂 = (od‘𝐺)
odid.3	⊢ · = (._g‘𝐺)
odid.4	⊢ 0 = (0_g‘𝐺)
mndodconglem.1	⊢ (𝜑 → 𝐺 ∈ Mnd)
mndodconglem.2	⊢ (𝜑 → 𝐴 ∈ 𝑋)
mndodconglem.3	⊢ (𝜑 → (𝑂‘𝐴) ∈ ℕ)
mndodconglem.4	⊢ (𝜑 → 𝑀 ∈ ℕ₀)
mndodconglem.5	⊢ (𝜑 → 𝑁 ∈ ℕ₀)
mndodconglem.6	⊢ (𝜑 → 𝑀 < (𝑂‘𝐴))
mndodconglem.7	⊢ (𝜑 → 𝑁 < (𝑂‘𝐴))
mndodconglem.8	⊢ (𝜑 → (𝑀 · 𝐴) = (𝑁 · 𝐴))

**Assertion**
Ref	Expression
mndodconglem	⊢ ((𝜑 ∧ 𝑀 ≤ 𝑁) → 𝑀 = 𝑁)

**Proof of Theorem mndodconglem**
Step	Hyp	Ref	Expression
1		mndodconglem.2	. . . . . . 7 ⊢ (𝜑 → 𝐴 ∈ 𝑋)
2		mndodconglem.3	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑂‘𝐴) ∈ ℕ)
3	2	nnred 12231	. . . . . . . . . 10 ⊢ (𝜑 → (𝑂‘𝐴) ∈ ℝ)
4	3	recnd 11246	. . . . . . . . 9 ⊢ (𝜑 → (𝑂‘𝐴) ∈ ℂ)
5		mndodconglem.4	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑀 ∈ ℕ₀)
6	5	nn0red 12537	. . . . . . . . . 10 ⊢ (𝜑 → 𝑀 ∈ ℝ)
7	6	recnd 11246	. . . . . . . . 9 ⊢ (𝜑 → 𝑀 ∈ ℂ)
8		mndodconglem.5	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑁 ∈ ℕ₀)
9	8	nn0red 12537	. . . . . . . . . 10 ⊢ (𝜑 → 𝑁 ∈ ℝ)
10	9	recnd 11246	. . . . . . . . 9 ⊢ (𝜑 → 𝑁 ∈ ℂ)
11	4, 7, 10	addsubassd 11595	. . . . . . . 8 ⊢ (𝜑 → (((𝑂‘𝐴) + 𝑀) − 𝑁) = ((𝑂‘𝐴) + (𝑀 − 𝑁)))
12	2	nnzd 12589	. . . . . . . . . . . 12 ⊢ (𝜑 → (𝑂‘𝐴) ∈ ℤ)
13	5	nn0zd 12588	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝑀 ∈ ℤ)
14	12, 13	zaddcld 12674	. . . . . . . . . . 11 ⊢ (𝜑 → ((𝑂‘𝐴) + 𝑀) ∈ ℤ)
15	14	zred 12670	. . . . . . . . . 10 ⊢ (𝜑 → ((𝑂‘𝐴) + 𝑀) ∈ ℝ)
16		mndodconglem.7	. . . . . . . . . 10 ⊢ (𝜑 → 𝑁 < (𝑂‘𝐴))
17		nn0addge1 12522	. . . . . . . . . . 11 ⊢ (((𝑂‘𝐴) ∈ ℝ ∧ 𝑀 ∈ ℕ₀) → (𝑂‘𝐴) ≤ ((𝑂‘𝐴) + 𝑀))
18	3, 5, 17	syl2anc 582	. . . . . . . . . 10 ⊢ (𝜑 → (𝑂‘𝐴) ≤ ((𝑂‘𝐴) + 𝑀))
19	9, 3, 15, 16, 18	ltletrd 11378	. . . . . . . . 9 ⊢ (𝜑 → 𝑁 < ((𝑂‘𝐴) + 𝑀))
20	8	nn0zd 12588	. . . . . . . . . 10 ⊢ (𝜑 → 𝑁 ∈ ℤ)
21		znnsub 12612	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℤ ∧ ((𝑂‘𝐴) + 𝑀) ∈ ℤ) → (𝑁 < ((𝑂‘𝐴) + 𝑀) ↔ (((𝑂‘𝐴) + 𝑀) − 𝑁) ∈ ℕ))
22	20, 14, 21	syl2anc 582	. . . . . . . . 9 ⊢ (𝜑 → (𝑁 < ((𝑂‘𝐴) + 𝑀) ↔ (((𝑂‘𝐴) + 𝑀) − 𝑁) ∈ ℕ))
23	19, 22	mpbid 231	. . . . . . . 8 ⊢ (𝜑 → (((𝑂‘𝐴) + 𝑀) − 𝑁) ∈ ℕ)
24	11, 23	eqeltrrd 2832	. . . . . . 7 ⊢ (𝜑 → ((𝑂‘𝐴) + (𝑀 − 𝑁)) ∈ ℕ)
25	4, 7, 10	addsub12d 11598	. . . . . . . . 9 ⊢ (𝜑 → ((𝑂‘𝐴) + (𝑀 − 𝑁)) = (𝑀 + ((𝑂‘𝐴) − 𝑁)))
26	25	oveq1d 7426	. . . . . . . 8 ⊢ (𝜑 → (((𝑂‘𝐴) + (𝑀 − 𝑁)) · 𝐴) = ((𝑀 + ((𝑂‘𝐴) − 𝑁)) · 𝐴))
27		mndodconglem.8	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑀 · 𝐴) = (𝑁 · 𝐴))
28	27	oveq1d 7426	. . . . . . . . . 10 ⊢ (𝜑 → ((𝑀 · 𝐴)(+_g‘𝐺)(((𝑂‘𝐴) − 𝑁) · 𝐴)) = ((𝑁 · 𝐴)(+_g‘𝐺)(((𝑂‘𝐴) − 𝑁) · 𝐴)))
29		mndodconglem.1	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐺 ∈ Mnd)
30		znnsub 12612	. . . . . . . . . . . . . 14 ⊢ ((𝑁 ∈ ℤ ∧ (𝑂‘𝐴) ∈ ℤ) → (𝑁 < (𝑂‘𝐴) ↔ ((𝑂‘𝐴) − 𝑁) ∈ ℕ))
31	20, 12, 30	syl2anc 582	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝑁 < (𝑂‘𝐴) ↔ ((𝑂‘𝐴) − 𝑁) ∈ ℕ))
32	16, 31	mpbid 231	. . . . . . . . . . . 12 ⊢ (𝜑 → ((𝑂‘𝐴) − 𝑁) ∈ ℕ)
33	32	nnnn0d 12536	. . . . . . . . . . 11 ⊢ (𝜑 → ((𝑂‘𝐴) − 𝑁) ∈ ℕ₀)
34		odcl.1	. . . . . . . . . . . 12 ⊢ 𝑋 = (Base‘𝐺)
35		odid.3	. . . . . . . . . . . 12 ⊢ · = (._g‘𝐺)
36		eqid 2730	. . . . . . . . . . . 12 ⊢ (+_g‘𝐺) = (+_g‘𝐺)
37	34, 35, 36	mulgnn0dir 19020	. . . . . . . . . . 11 ⊢ ((𝐺 ∈ Mnd ∧ (𝑀 ∈ ℕ₀ ∧ ((𝑂‘𝐴) − 𝑁) ∈ ℕ₀ ∧ 𝐴 ∈ 𝑋)) → ((𝑀 + ((𝑂‘𝐴) − 𝑁)) · 𝐴) = ((𝑀 · 𝐴)(+_g‘𝐺)(((𝑂‘𝐴) − 𝑁) · 𝐴)))
38	29, 5, 33, 1, 37	syl13anc 1370	. . . . . . . . . 10 ⊢ (𝜑 → ((𝑀 + ((𝑂‘𝐴) − 𝑁)) · 𝐴) = ((𝑀 · 𝐴)(+_g‘𝐺)(((𝑂‘𝐴) − 𝑁) · 𝐴)))
39	34, 35, 36	mulgnn0dir 19020	. . . . . . . . . . 11 ⊢ ((𝐺 ∈ Mnd ∧ (𝑁 ∈ ℕ₀ ∧ ((𝑂‘𝐴) − 𝑁) ∈ ℕ₀ ∧ 𝐴 ∈ 𝑋)) → ((𝑁 + ((𝑂‘𝐴) − 𝑁)) · 𝐴) = ((𝑁 · 𝐴)(+_g‘𝐺)(((𝑂‘𝐴) − 𝑁) · 𝐴)))
40	29, 8, 33, 1, 39	syl13anc 1370	. . . . . . . . . 10 ⊢ (𝜑 → ((𝑁 + ((𝑂‘𝐴) − 𝑁)) · 𝐴) = ((𝑁 · 𝐴)(+_g‘𝐺)(((𝑂‘𝐴) − 𝑁) · 𝐴)))
41	28, 38, 40	3eqtr4d 2780	. . . . . . . . 9 ⊢ (𝜑 → ((𝑀 + ((𝑂‘𝐴) − 𝑁)) · 𝐴) = ((𝑁 + ((𝑂‘𝐴) − 𝑁)) · 𝐴))
42	10, 4	pncan3d 11578	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑁 + ((𝑂‘𝐴) − 𝑁)) = (𝑂‘𝐴))
43	42	oveq1d 7426	. . . . . . . . . 10 ⊢ (𝜑 → ((𝑁 + ((𝑂‘𝐴) − 𝑁)) · 𝐴) = ((𝑂‘𝐴) · 𝐴))
44		odcl.2	. . . . . . . . . . . 12 ⊢ 𝑂 = (od‘𝐺)
45		odid.4	. . . . . . . . . . . 12 ⊢ 0 = (0_g‘𝐺)
46	34, 44, 35, 45	odid 19447	. . . . . . . . . . 11 ⊢ (𝐴 ∈ 𝑋 → ((𝑂‘𝐴) · 𝐴) = 0 )
47	1, 46	syl 17	. . . . . . . . . 10 ⊢ (𝜑 → ((𝑂‘𝐴) · 𝐴) = 0 )
48	43, 47	eqtrd 2770	. . . . . . . . 9 ⊢ (𝜑 → ((𝑁 + ((𝑂‘𝐴) − 𝑁)) · 𝐴) = 0 )
49	41, 48	eqtrd 2770	. . . . . . . 8 ⊢ (𝜑 → ((𝑀 + ((𝑂‘𝐴) − 𝑁)) · 𝐴) = 0 )
50	26, 49	eqtrd 2770	. . . . . . 7 ⊢ (𝜑 → (((𝑂‘𝐴) + (𝑀 − 𝑁)) · 𝐴) = 0 )
51	34, 44, 35, 45	odlem2 19448	. . . . . . 7 ⊢ ((𝐴 ∈ 𝑋 ∧ ((𝑂‘𝐴) + (𝑀 − 𝑁)) ∈ ℕ ∧ (((𝑂‘𝐴) + (𝑀 − 𝑁)) · 𝐴) = 0 ) → (𝑂‘𝐴) ∈ (1...((𝑂‘𝐴) + (𝑀 − 𝑁))))
52	1, 24, 50, 51	syl3anc 1369	. . . . . 6 ⊢ (𝜑 → (𝑂‘𝐴) ∈ (1...((𝑂‘𝐴) + (𝑀 − 𝑁))))
53		elfzle2 13509	. . . . . 6 ⊢ ((𝑂‘𝐴) ∈ (1...((𝑂‘𝐴) + (𝑀 − 𝑁))) → (𝑂‘𝐴) ≤ ((𝑂‘𝐴) + (𝑀 − 𝑁)))
54	52, 53	syl 17	. . . . 5 ⊢ (𝜑 → (𝑂‘𝐴) ≤ ((𝑂‘𝐴) + (𝑀 − 𝑁)))
55	13, 20	zsubcld 12675	. . . . . . 7 ⊢ (𝜑 → (𝑀 − 𝑁) ∈ ℤ)
56	55	zred 12670	. . . . . 6 ⊢ (𝜑 → (𝑀 − 𝑁) ∈ ℝ)
57	3, 56	addge01d 11806	. . . . 5 ⊢ (𝜑 → (0 ≤ (𝑀 − 𝑁) ↔ (𝑂‘𝐴) ≤ ((𝑂‘𝐴) + (𝑀 − 𝑁))))
58	54, 57	mpbird 256	. . . 4 ⊢ (𝜑 → 0 ≤ (𝑀 − 𝑁))
59	6, 9	subge0d 11808	. . . 4 ⊢ (𝜑 → (0 ≤ (𝑀 − 𝑁) ↔ 𝑁 ≤ 𝑀))
60	58, 59	mpbid 231	. . 3 ⊢ (𝜑 → 𝑁 ≤ 𝑀)
61	6, 9	letri3d 11360	. . . 4 ⊢ (𝜑 → (𝑀 = 𝑁 ↔ (𝑀 ≤ 𝑁 ∧ 𝑁 ≤ 𝑀)))
62	61	biimprd 247	. . 3 ⊢ (𝜑 → ((𝑀 ≤ 𝑁 ∧ 𝑁 ≤ 𝑀) → 𝑀 = 𝑁))
63	60, 62	mpan2d 690	. 2 ⊢ (𝜑 → (𝑀 ≤ 𝑁 → 𝑀 = 𝑁))
64	63	imp 405	1 ⊢ ((𝜑 ∧ 𝑀 ≤ 𝑁) → 𝑀 = 𝑁)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 394 = wceq 1539 ∈ wcel 2104 class class class wbr 5147 ‘cfv 6542 (class class class)co 7411 ℝcr 11111 0cc0 11112 1c1 11113 + caddc 11115 < clt 11252 ≤ cle 11253 − cmin 11448 ℕcn 12216 ℕ₀cn0 12476 ℤcz 12562 ...cfz 13488 Basecbs 17148 +_gcplusg 17201 0_gc0g 17389 Mndcmnd 18659 ._gcmg 18986 odcod 19433

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2701 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7727 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189

This theorem depends on definitions: df-bi 206 df-an 395 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2532 df-eu 2561 df-clab 2708 df-cleq 2722 df-clel 2808 df-nfc 2883 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-rmo 3374 df-reu 3375 df-rab 3431 df-v 3474 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-iun 4998 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6299 df-ord 6366 df-on 6367 df-lim 6368 df-suc 6369 df-iota 6494 df-fun 6544 df-fn 6545 df-f 6546 df-f1 6547 df-fo 6548 df-f1o 6549 df-fv 6550 df-riota 7367 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7858 df-1st 7977 df-2nd 7978 df-frecs 8268 df-wrecs 8299 df-recs 8373 df-rdg 8412 df-er 8705 df-en 8942 df-dom 8943 df-sdom 8944 df-sup 9439 df-inf 9440 df-pnf 11254 df-mnf 11255 df-xr 11256 df-ltxr 11257 df-le 11258 df-sub 11450 df-neg 11451 df-nn 12217 df-n0 12477 df-z 12563 df-uz 12827 df-fz 13489 df-seq 13971 df-0g 17391 df-mgm 18565 df-sgrp 18644 df-mnd 18660 df-mulg 18987 df-od 19437

This theorem is referenced by: mndodcong 19451

W3C validator