fltaccoprm - Mathbox for Steven Nguyen

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Theorem fltaccoprm 40004

Description: A counterexample to FLT with 𝐴, 𝐵 coprime also has 𝐴, 𝐶 coprime. (Contributed by SN, 20-Aug-2024.)

**Hypotheses**
Ref	Expression
fltabcoprmex.a	⊢ (𝜑 → 𝐴 ∈ ℕ)
fltabcoprmex.b	⊢ (𝜑 → 𝐵 ∈ ℕ)
fltabcoprmex.c	⊢ (𝜑 → 𝐶 ∈ ℕ)
fltabcoprmex.n	⊢ (𝜑 → 𝑁 ∈ ℕ₀)
fltabcoprmex.1	⊢ (𝜑 → ((𝐴↑𝑁) + (𝐵↑𝑁)) = (𝐶↑𝑁))
fltaccoprm.1	⊢ (𝜑 → (𝐴 gcd 𝐵) = 1)

**Assertion**
Ref	Expression
fltaccoprm	⊢ (𝜑 → (𝐴 gcd 𝐶) = 1)

Proof of Theorem fltaccoprm Dummy variable 𝑖 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		fltaccoprm.1	. . . 4 ⊢ (𝜑 → (𝐴 gcd 𝐵) = 1)
2		fltabcoprmex.a	. . . . 5 ⊢ (𝜑 → 𝐴 ∈ ℕ)
3		fltabcoprmex.b	. . . . 5 ⊢ (𝜑 → 𝐵 ∈ ℕ)
4		coprmgcdb 16058	. . . . 5 ⊢ ((𝐴 ∈ ℕ ∧ 𝐵 ∈ ℕ) → (∀𝑖 ∈ ℕ ((𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐵) → 𝑖 = 1) ↔ (𝐴 gcd 𝐵) = 1))
5	2, 3, 4	syl2anc 587	. . . 4 ⊢ (𝜑 → (∀𝑖 ∈ ℕ ((𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐵) → 𝑖 = 1) ↔ (𝐴 gcd 𝐵) = 1))
6	1, 5	mpbird 260	. . 3 ⊢ (𝜑 → ∀𝑖 ∈ ℕ ((𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐵) → 𝑖 = 1))
7		simprl 770	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑖 ∈ ℕ) ∧ (𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶)) → 𝑖 ∥ 𝐴)
8		simpr 488	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → 𝑖 ∈ ℕ)
9	8	nnzd 12138	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → 𝑖 ∈ ℤ)
10		fltabcoprmex.c	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → 𝐶 ∈ ℕ)
11	10	nnzd 12138	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → 𝐶 ∈ ℤ)
12	11	adantr 484	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → 𝐶 ∈ ℤ)
13		fltabcoprmex.n	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → 𝑁 ∈ ℕ₀)
14	13	adantr 484	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → 𝑁 ∈ ℕ₀)
15		dvdsexpim 39860	. . . . . . . . . . . . . 14 ⊢ ((𝑖 ∈ ℤ ∧ 𝐶 ∈ ℤ ∧ 𝑁 ∈ ℕ₀) → (𝑖 ∥ 𝐶 → (𝑖↑𝑁) ∥ (𝐶↑𝑁)))
16	9, 12, 14, 15	syl3anc 1368	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → (𝑖 ∥ 𝐶 → (𝑖↑𝑁) ∥ (𝐶↑𝑁)))
17	2	nnzd 12138	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → 𝐴 ∈ ℤ)
18	17	adantr 484	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → 𝐴 ∈ ℤ)
19		dvdsexpim 39860	. . . . . . . . . . . . . 14 ⊢ ((𝑖 ∈ ℤ ∧ 𝐴 ∈ ℤ ∧ 𝑁 ∈ ℕ₀) → (𝑖 ∥ 𝐴 → (𝑖↑𝑁) ∥ (𝐴↑𝑁)))
20	9, 18, 14, 19	syl3anc 1368	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → (𝑖 ∥ 𝐴 → (𝑖↑𝑁) ∥ (𝐴↑𝑁)))
21	16, 20	anim12d 611	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → ((𝑖 ∥ 𝐶 ∧ 𝑖 ∥ 𝐴) → ((𝑖↑𝑁) ∥ (𝐶↑𝑁) ∧ (𝑖↑𝑁) ∥ (𝐴↑𝑁))))
22	21	ancomsd 469	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → ((𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶) → ((𝑖↑𝑁) ∥ (𝐶↑𝑁) ∧ (𝑖↑𝑁) ∥ (𝐴↑𝑁))))
23	22	imp 410	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑖 ∈ ℕ) ∧ (𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶)) → ((𝑖↑𝑁) ∥ (𝐶↑𝑁) ∧ (𝑖↑𝑁) ∥ (𝐴↑𝑁)))
24	8, 14	nnexpcld 13669	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → (𝑖↑𝑁) ∈ ℕ)
25	24	nnzd 12138	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → (𝑖↑𝑁) ∈ ℤ)
26	25	adantr 484	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑖 ∈ ℕ) ∧ (𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶)) → (𝑖↑𝑁) ∈ ℤ)
27	10, 13	nnexpcld 13669	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝐶↑𝑁) ∈ ℕ)
28	27	nnzd 12138	. . . . . . . . . . . 12 ⊢ (𝜑 → (𝐶↑𝑁) ∈ ℤ)
29	28	ad2antrr 725	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑖 ∈ ℕ) ∧ (𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶)) → (𝐶↑𝑁) ∈ ℤ)
30	2, 13	nnexpcld 13669	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝐴↑𝑁) ∈ ℕ)
31	30	nnzd 12138	. . . . . . . . . . . 12 ⊢ (𝜑 → (𝐴↑𝑁) ∈ ℤ)
32	31	ad2antrr 725	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑖 ∈ ℕ) ∧ (𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶)) → (𝐴↑𝑁) ∈ ℤ)
33		dvds2sub 15705	. . . . . . . . . . 11 ⊢ (((𝑖↑𝑁) ∈ ℤ ∧ (𝐶↑𝑁) ∈ ℤ ∧ (𝐴↑𝑁) ∈ ℤ) → (((𝑖↑𝑁) ∥ (𝐶↑𝑁) ∧ (𝑖↑𝑁) ∥ (𝐴↑𝑁)) → (𝑖↑𝑁) ∥ ((𝐶↑𝑁) − (𝐴↑𝑁))))
34	26, 29, 32, 33	syl3anc 1368	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑖 ∈ ℕ) ∧ (𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶)) → (((𝑖↑𝑁) ∥ (𝐶↑𝑁) ∧ (𝑖↑𝑁) ∥ (𝐴↑𝑁)) → (𝑖↑𝑁) ∥ ((𝐶↑𝑁) − (𝐴↑𝑁))))
35	23, 34	mpd 15	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑖 ∈ ℕ) ∧ (𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶)) → (𝑖↑𝑁) ∥ ((𝐶↑𝑁) − (𝐴↑𝑁)))
36	2	nncnd 11703	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝐴 ∈ ℂ)
37	36, 13	expcld 13573	. . . . . . . . . . 11 ⊢ (𝜑 → (𝐴↑𝑁) ∈ ℂ)
38	3	nncnd 11703	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝐵 ∈ ℂ)
39	38, 13	expcld 13573	. . . . . . . . . . 11 ⊢ (𝜑 → (𝐵↑𝑁) ∈ ℂ)
40		fltabcoprmex.1	. . . . . . . . . . 11 ⊢ (𝜑 → ((𝐴↑𝑁) + (𝐵↑𝑁)) = (𝐶↑𝑁))
41	37, 39, 40	laddrotrd 39841	. . . . . . . . . 10 ⊢ (𝜑 → ((𝐶↑𝑁) − (𝐴↑𝑁)) = (𝐵↑𝑁))
42	41	ad2antrr 725	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑖 ∈ ℕ) ∧ (𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶)) → ((𝐶↑𝑁) − (𝐴↑𝑁)) = (𝐵↑𝑁))
43	35, 42	breqtrd 5062	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑖 ∈ ℕ) ∧ (𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶)) → (𝑖↑𝑁) ∥ (𝐵↑𝑁))
44		simplr 768	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑖 ∈ ℕ) ∧ (𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶)) → 𝑖 ∈ ℕ)
45	3	ad2antrr 725	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑖 ∈ ℕ) ∧ (𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶)) → 𝐵 ∈ ℕ)
46	10	nncnd 11703	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐶 ∈ ℂ)
47	36, 38, 46, 13, 40	flt0 40001	. . . . . . . . . 10 ⊢ (𝜑 → 𝑁 ∈ ℕ)
48	47	ad2antrr 725	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑖 ∈ ℕ) ∧ (𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶)) → 𝑁 ∈ ℕ)
49		dvdsexpnn 39873	. . . . . . . . 9 ⊢ ((𝑖 ∈ ℕ ∧ 𝐵 ∈ ℕ ∧ 𝑁 ∈ ℕ) → (𝑖 ∥ 𝐵 ↔ (𝑖↑𝑁) ∥ (𝐵↑𝑁)))
50	44, 45, 48, 49	syl3anc 1368	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑖 ∈ ℕ) ∧ (𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶)) → (𝑖 ∥ 𝐵 ↔ (𝑖↑𝑁) ∥ (𝐵↑𝑁)))
51	43, 50	mpbird 260	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑖 ∈ ℕ) ∧ (𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶)) → 𝑖 ∥ 𝐵)
52	7, 51	jca 515	. . . . . 6 ⊢ (((𝜑 ∧ 𝑖 ∈ ℕ) ∧ (𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶)) → (𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐵))
53	52	ex 416	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → ((𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶) → (𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐵)))
54	53	imim1d 82	. . . 4 ⊢ ((𝜑 ∧ 𝑖 ∈ ℕ) → (((𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐵) → 𝑖 = 1) → ((𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶) → 𝑖 = 1)))
55	54	ralimdva 3108	. . 3 ⊢ (𝜑 → (∀𝑖 ∈ ℕ ((𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐵) → 𝑖 = 1) → ∀𝑖 ∈ ℕ ((𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶) → 𝑖 = 1)))
56	6, 55	mpd 15	. 2 ⊢ (𝜑 → ∀𝑖 ∈ ℕ ((𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶) → 𝑖 = 1))
57		coprmgcdb 16058	. . 3 ⊢ ((𝐴 ∈ ℕ ∧ 𝐶 ∈ ℕ) → (∀𝑖 ∈ ℕ ((𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶) → 𝑖 = 1) ↔ (𝐴 gcd 𝐶) = 1))
58	2, 10, 57	syl2anc 587	. 2 ⊢ (𝜑 → (∀𝑖 ∈ ℕ ((𝑖 ∥ 𝐴 ∧ 𝑖 ∥ 𝐶) → 𝑖 = 1) ↔ (𝐴 gcd 𝐶) = 1))
59	56, 58	mpbid 235	1 ⊢ (𝜑 → (𝐴 gcd 𝐶) = 1)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 = wceq 1538 ∈ wcel 2111 ∀wral 3070 class class class wbr 5036 (class class class)co 7156 1c1 10589 + caddc 10591 − cmin 10921 ℕcn 11687 ℕ₀cn0 11947 ℤcz 12033 ↑cexp 13492 ∥ cdvds 15668 gcd cgcd 15906

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 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2729 ax-rep 5160 ax-sep 5173 ax-nul 5180 ax-pow 5238 ax-pr 5302 ax-un 7465 ax-inf2 9150 ax-cnex 10644 ax-resscn 10645 ax-1cn 10646 ax-icn 10647 ax-addcl 10648 ax-addrcl 10649 ax-mulcl 10650 ax-mulrcl 10651 ax-mulcom 10652 ax-addass 10653 ax-mulass 10654 ax-distr 10655 ax-i2m1 10656 ax-1ne0 10657 ax-1rid 10658 ax-rnegex 10659 ax-rrecex 10660 ax-cnre 10661 ax-pre-lttri 10662 ax-pre-lttrn 10663 ax-pre-ltadd 10664 ax-pre-mulgt0 10665 ax-pre-sup 10666 ax-addf 10667 ax-mulf 10668

This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-fal 1551 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2557 df-eu 2588 df-clab 2736 df-cleq 2750 df-clel 2830 df-nfc 2901 df-ne 2952 df-nel 3056 df-ral 3075 df-rex 3076 df-reu 3077 df-rmo 3078 df-rab 3079 df-v 3411 df-sbc 3699 df-csb 3808 df-dif 3863 df-un 3865 df-in 3867 df-ss 3877 df-pss 3879 df-nul 4228 df-if 4424 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4802 df-int 4842 df-iun 4888 df-iin 4889 df-br 5037 df-opab 5099 df-mpt 5117 df-tr 5143 df-id 5434 df-eprel 5439 df-po 5447 df-so 5448 df-fr 5487 df-se 5488 df-we 5489 df-xp 5534 df-rel 5535 df-cnv 5536 df-co 5537 df-dm 5538 df-rn 5539 df-res 5540 df-ima 5541 df-pred 6131 df-ord 6177 df-on 6178 df-lim 6179 df-suc 6180 df-iota 6299 df-fun 6342 df-fn 6343 df-f 6344 df-f1 6345 df-fo 6346 df-f1o 6347 df-fv 6348 df-isom 6349 df-riota 7114 df-ov 7159 df-oprab 7160 df-mpo 7161 df-of 7411 df-om 7586 df-1st 7699 df-2nd 7700 df-supp 7842 df-wrecs 7963 df-recs 8024 df-rdg 8062 df-1o 8118 df-2o 8119 df-er 8305 df-map 8424 df-pm 8425 df-ixp 8493 df-en 8541 df-dom 8542 df-sdom 8543 df-fin 8544 df-fsupp 8880 df-fi 8921 df-sup 8952 df-inf 8953 df-oi 9020 df-card 9414 df-pnf 10728 df-mnf 10729 df-xr 10730 df-ltxr 10731 df-le 10732 df-sub 10923 df-neg 10924 df-div 11349 df-nn 11688 df-2 11750 df-3 11751 df-4 11752 df-5 11753 df-6 11754 df-7 11755 df-8 11756 df-9 11757 df-n0 11948 df-z 12034 df-dec 12151 df-uz 12296 df-q 12402 df-rp 12444 df-xneg 12561 df-xadd 12562 df-xmul 12563 df-ioo 12796 df-ioc 12797 df-ico 12798 df-icc 12799 df-fz 12953 df-fzo 13096 df-fl 13224 df-mod 13300 df-seq 13432 df-exp 13493 df-fac 13697 df-bc 13726 df-hash 13754 df-shft 14487 df-cj 14519 df-re 14520 df-im 14521 df-sqrt 14655 df-abs 14656 df-limsup 14889 df-clim 14906 df-rlim 14907 df-sum 15104 df-ef 15482 df-sin 15484 df-cos 15485 df-pi 15487 df-dvds 15669 df-gcd 15907 df-struct 16556 df-ndx 16557 df-slot 16558 df-base 16560 df-sets 16561 df-ress 16562 df-plusg 16649 df-mulr 16650 df-starv 16651 df-sca 16652 df-vsca 16653 df-ip 16654 df-tset 16655 df-ple 16656 df-ds 16658 df-unif 16659 df-hom 16660 df-cco 16661 df-rest 16767 df-topn 16768 df-0g 16786 df-gsum 16787 df-topgen 16788 df-pt 16789 df-prds 16792 df-xrs 16846 df-qtop 16851 df-imas 16852 df-xps 16854 df-mre 16928 df-mrc 16929 df-acs 16931 df-mgm 17931 df-sgrp 17980 df-mnd 17991 df-submnd 18036 df-mulg 18305 df-cntz 18527 df-cmn 18988 df-psmet 20171 df-xmet 20172 df-met 20173 df-bl 20174 df-mopn 20175 df-fbas 20176 df-fg 20177 df-cnfld 20180 df-top 21607 df-topon 21624 df-topsp 21646 df-bases 21659 df-cld 21732 df-ntr 21733 df-cls 21734 df-nei 21811 df-lp 21849 df-perf 21850 df-cn 21940 df-cnp 21941 df-haus 22028 df-tx 22275 df-hmeo 22468 df-fil 22559 df-fm 22651 df-flim 22652 df-flf 22653 df-xms 23035 df-ms 23036 df-tms 23037 df-cncf 23592 df-limc 24578 df-dv 24579 df-log 25260 df-cxp 25261

This theorem is referenced by: fltbccoprm 40005 flt4lem7 40023 nna4b4nsq 40024

W3C validator