fltne - Mathbox for Steven Nguyen

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Theorem fltne 42068

Description: If a counterexample to FLT exists, its addends are not equal. (Contributed by SN, 1-Jun-2023.)

**Hypotheses**
Ref	Expression
fltne.a	⊢ (𝜑 → 𝐴 ∈ ℕ)
fltne.b	⊢ (𝜑 → 𝐵 ∈ ℕ)
fltne.c	⊢ (𝜑 → 𝐶 ∈ ℕ)
fltne.n	⊢ (𝜑 → 𝑁 ∈ (ℤ_≥‘2))
fltne.1	⊢ (𝜑 → ((𝐴↑𝑁) + (𝐵↑𝑁)) = (𝐶↑𝑁))

**Assertion**
Ref	Expression
fltne	⊢ (𝜑 → 𝐴 ≠ 𝐵)

**Proof of Theorem fltne**
Step	Hyp	Ref	Expression
1		2prm 16662	. . . . 5 ⊢ 2 ∈ ℙ
2		fltne.n	. . . . 5 ⊢ (𝜑 → 𝑁 ∈ (ℤ_≥‘2))
3		rtprmirr 41906	. . . . 5 ⊢ ((2 ∈ ℙ ∧ 𝑁 ∈ (ℤ_≥‘2)) → (2↑_𝑐(1 / 𝑁)) ∈ (ℝ ∖ ℚ))
4	1, 2, 3	sylancr 586	. . . 4 ⊢ (𝜑 → (2↑_𝑐(1 / 𝑁)) ∈ (ℝ ∖ ℚ))
5	4	eldifbd 3960	. . 3 ⊢ (𝜑 → ¬ (2↑_𝑐(1 / 𝑁)) ∈ ℚ)
6		fltne.c	. . . . . . 7 ⊢ (𝜑 → 𝐶 ∈ ℕ)
7	6	nnzd 12615	. . . . . 6 ⊢ (𝜑 → 𝐶 ∈ ℤ)
8		fltne.a	. . . . . 6 ⊢ (𝜑 → 𝐴 ∈ ℕ)
9		znq 12966	. . . . . 6 ⊢ ((𝐶 ∈ ℤ ∧ 𝐴 ∈ ℕ) → (𝐶 / 𝐴) ∈ ℚ)
10	7, 8, 9	syl2anc 583	. . . . 5 ⊢ (𝜑 → (𝐶 / 𝐴) ∈ ℚ)
11		eleq1a 2824	. . . . 5 ⊢ ((𝐶 / 𝐴) ∈ ℚ → ((2↑_𝑐(1 / 𝑁)) = (𝐶 / 𝐴) → (2↑_𝑐(1 / 𝑁)) ∈ ℚ))
12	10, 11	syl 17	. . . 4 ⊢ (𝜑 → ((2↑_𝑐(1 / 𝑁)) = (𝐶 / 𝐴) → (2↑_𝑐(1 / 𝑁)) ∈ ℚ))
13	12	necon3bd 2951	. . 3 ⊢ (𝜑 → (¬ (2↑_𝑐(1 / 𝑁)) ∈ ℚ → (2↑_𝑐(1 / 𝑁)) ≠ (𝐶 / 𝐴)))
14	5, 13	mpd 15	. 2 ⊢ (𝜑 → (2↑_𝑐(1 / 𝑁)) ≠ (𝐶 / 𝐴))
15		2rp 13011	. . . . . 6 ⊢ 2 ∈ ℝ⁺
16	15	a1i 11	. . . . 5 ⊢ (𝜑 → 2 ∈ ℝ⁺)
17		eluz2nn 12898	. . . . . . 7 ⊢ (𝑁 ∈ (ℤ_≥‘2) → 𝑁 ∈ ℕ)
18	2, 17	syl 17	. . . . . 6 ⊢ (𝜑 → 𝑁 ∈ ℕ)
19	18	nnrecred 12293	. . . . 5 ⊢ (𝜑 → (1 / 𝑁) ∈ ℝ)
20	16, 19	rpcxpcld 26666	. . . 4 ⊢ (𝜑 → (2↑_𝑐(1 / 𝑁)) ∈ ℝ⁺)
21	20	adantr 480	. . 3 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (2↑_𝑐(1 / 𝑁)) ∈ ℝ⁺)
22	6	nnrpd 13046	. . . . 5 ⊢ (𝜑 → 𝐶 ∈ ℝ⁺)
23	8	nnrpd 13046	. . . . 5 ⊢ (𝜑 → 𝐴 ∈ ℝ⁺)
24	22, 23	rpdivcld 13065	. . . 4 ⊢ (𝜑 → (𝐶 / 𝐴) ∈ ℝ⁺)
25	24	adantr 480	. . 3 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (𝐶 / 𝐴) ∈ ℝ⁺)
26	18	adantr 480	. . 3 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → 𝑁 ∈ ℕ)
27	18	nnnn0d 12562	. . . . . . . 8 ⊢ (𝜑 → 𝑁 ∈ ℕ₀)
28	8, 27	nnexpcld 14239	. . . . . . 7 ⊢ (𝜑 → (𝐴↑𝑁) ∈ ℕ)
29	28	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (𝐴↑𝑁) ∈ ℕ)
30	29	nncnd 12258	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (𝐴↑𝑁) ∈ ℂ)
31		2cnd 12320	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → 2 ∈ ℂ)
32	29	nnne0d 12292	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (𝐴↑𝑁) ≠ 0)
33	28	nncnd 12258	. . . . . . . 8 ⊢ (𝜑 → (𝐴↑𝑁) ∈ ℂ)
34	33	times2d 12486	. . . . . . 7 ⊢ (𝜑 → ((𝐴↑𝑁) · 2) = ((𝐴↑𝑁) + (𝐴↑𝑁)))
35	34	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → ((𝐴↑𝑁) · 2) = ((𝐴↑𝑁) + (𝐴↑𝑁)))
36		simpr 484	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → 𝐴 = 𝐵)
37	36	oveq1d 7435	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (𝐴↑𝑁) = (𝐵↑𝑁))
38	37	oveq2d 7436	. . . . . 6 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → ((𝐴↑𝑁) + (𝐴↑𝑁)) = ((𝐴↑𝑁) + (𝐵↑𝑁)))
39		fltne.1	. . . . . . 7 ⊢ (𝜑 → ((𝐴↑𝑁) + (𝐵↑𝑁)) = (𝐶↑𝑁))
40	39	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → ((𝐴↑𝑁) + (𝐵↑𝑁)) = (𝐶↑𝑁))
41	35, 38, 40	3eqtrd 2772	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → ((𝐴↑𝑁) · 2) = (𝐶↑𝑁))
42	30, 31, 32, 41	mvllmuld 12076	. . . 4 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → 2 = ((𝐶↑𝑁) / (𝐴↑𝑁)))
43		2cn 12317	. . . . . 6 ⊢ 2 ∈ ℂ
44		cxproot 26623	. . . . . 6 ⊢ ((2 ∈ ℂ ∧ 𝑁 ∈ ℕ) → ((2↑_𝑐(1 / 𝑁))↑𝑁) = 2)
45	43, 18, 44	sylancr 586	. . . . 5 ⊢ (𝜑 → ((2↑_𝑐(1 / 𝑁))↑𝑁) = 2)
46	45	adantr 480	. . . 4 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → ((2↑_𝑐(1 / 𝑁))↑𝑁) = 2)
47	6	nncnd 12258	. . . . . 6 ⊢ (𝜑 → 𝐶 ∈ ℂ)
48	8	nncnd 12258	. . . . . 6 ⊢ (𝜑 → 𝐴 ∈ ℂ)
49	8	nnne0d 12292	. . . . . 6 ⊢ (𝜑 → 𝐴 ≠ 0)
50	47, 48, 49, 27	expdivd 14156	. . . . 5 ⊢ (𝜑 → ((𝐶 / 𝐴)↑𝑁) = ((𝐶↑𝑁) / (𝐴↑𝑁)))
51	50	adantr 480	. . . 4 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → ((𝐶 / 𝐴)↑𝑁) = ((𝐶↑𝑁) / (𝐴↑𝑁)))
52	42, 46, 51	3eqtr4d 2778	. . 3 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → ((2↑_𝑐(1 / 𝑁))↑𝑁) = ((𝐶 / 𝐴)↑𝑁))
53	21, 25, 26, 52	exp11nnd 41884	. 2 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (2↑_𝑐(1 / 𝑁)) = (𝐶 / 𝐴))
54	14, 53	mteqand 3030	1 ⊢ (𝜑 → 𝐴 ≠ 𝐵)

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 = wceq 1534 ∈ wcel 2099 ≠ wne 2937 ∖ cdif 3944 ‘cfv 6548 (class class class)co 7420 ℂcc 11136 ℝcr 11137 1c1 11139 + caddc 11141 · cmul 11143 / cdiv 11901 ℕcn 12242 2c2 12297 ℤcz 12588 ℤ_≥cuz 12852 ℚcq 12962 ℝ⁺crp 13006 ↑cexp 14058 ℙcprime 16641 ↑_𝑐ccxp 26488

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2167 ax-ext 2699 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5365 ax-pr 5429 ax-un 7740 ax-inf2 9664 ax-cnex 11194 ax-resscn 11195 ax-1cn 11196 ax-icn 11197 ax-addcl 11198 ax-addrcl 11199 ax-mulcl 11200 ax-mulrcl 11201 ax-mulcom 11202 ax-addass 11203 ax-mulass 11204 ax-distr 11205 ax-i2m1 11206 ax-1ne0 11207 ax-1rid 11208 ax-rnegex 11209 ax-rrecex 11210 ax-cnre 11211 ax-pre-lttri 11212 ax-pre-lttrn 11213 ax-pre-ltadd 11214 ax-pre-mulgt0 11215 ax-pre-sup 11216 ax-addf 11217

This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3or 1086 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2530 df-eu 2559 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2938 df-nel 3044 df-ral 3059 df-rex 3068 df-rmo 3373 df-reu 3374 df-rab 3430 df-v 3473 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-tp 4634 df-op 4636 df-uni 4909 df-int 4950 df-iun 4998 df-iin 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5576 df-eprel 5582 df-po 5590 df-so 5591 df-fr 5633 df-se 5634 df-we 5635 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-res 5690 df-ima 5691 df-pred 6305 df-ord 6372 df-on 6373 df-lim 6374 df-suc 6375 df-iota 6500 df-fun 6550 df-fn 6551 df-f 6552 df-f1 6553 df-fo 6554 df-f1o 6555 df-fv 6556 df-isom 6557 df-riota 7376 df-ov 7423 df-oprab 7424 df-mpo 7425 df-of 7685 df-om 7871 df-1st 7993 df-2nd 7994 df-supp 8166 df-frecs 8286 df-wrecs 8317 df-recs 8391 df-rdg 8430 df-1o 8486 df-2o 8487 df-er 8724 df-map 8846 df-pm 8847 df-ixp 8916 df-en 8964 df-dom 8965 df-sdom 8966 df-fin 8967 df-fsupp 9386 df-fi 9434 df-sup 9465 df-inf 9466 df-oi 9533 df-card 9962 df-pnf 11280 df-mnf 11281 df-xr 11282 df-ltxr 11283 df-le 11284 df-sub 11476 df-neg 11477 df-div 11902 df-nn 12243 df-2 12305 df-3 12306 df-4 12307 df-5 12308 df-6 12309 df-7 12310 df-8 12311 df-9 12312 df-n0 12503 df-z 12589 df-dec 12708 df-uz 12853 df-q 12963 df-rp 13007 df-xneg 13124 df-xadd 13125 df-xmul 13126 df-ioo 13360 df-ioc 13361 df-ico 13362 df-icc 13363 df-fz 13517 df-fzo 13660 df-fl 13789 df-mod 13867 df-seq 13999 df-exp 14059 df-fac 14265 df-bc 14294 df-hash 14322 df-shft 15046 df-cj 15078 df-re 15079 df-im 15080 df-sqrt 15214 df-abs 15215 df-limsup 15447 df-clim 15464 df-rlim 15465 df-sum 15665 df-ef 16043 df-sin 16045 df-cos 16046 df-pi 16048 df-dvds 16231 df-gcd 16469 df-prm 16642 df-numer 16706 df-denom 16707 df-struct 17115 df-sets 17132 df-slot 17150 df-ndx 17162 df-base 17180 df-ress 17209 df-plusg 17245 df-mulr 17246 df-starv 17247 df-sca 17248 df-vsca 17249 df-ip 17250 df-tset 17251 df-ple 17252 df-ds 17254 df-unif 17255 df-hom 17256 df-cco 17257 df-rest 17403 df-topn 17404 df-0g 17422 df-gsum 17423 df-topgen 17424 df-pt 17425 df-prds 17428 df-xrs 17483 df-qtop 17488 df-imas 17489 df-xps 17491 df-mre 17565 df-mrc 17566 df-acs 17568 df-mgm 18599 df-sgrp 18678 df-mnd 18694 df-submnd 18740 df-mulg 19023 df-cntz 19267 df-cmn 19736 df-psmet 21270 df-xmet 21271 df-met 21272 df-bl 21273 df-mopn 21274 df-fbas 21275 df-fg 21276 df-cnfld 21279 df-top 22795 df-topon 22812 df-topsp 22834 df-bases 22848 df-cld 22922 df-ntr 22923 df-cls 22924 df-nei 23001 df-lp 23039 df-perf 23040 df-cn 23130 df-cnp 23131 df-haus 23218 df-tx 23465 df-hmeo 23658 df-fil 23749 df-fm 23841 df-flim 23842 df-flf 23843 df-xms 24225 df-ms 24226 df-tms 24227 df-cncf 24797 df-limc 25794 df-dv 25795 df-log 26489 df-cxp 26490

This theorem is referenced by: (None)

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