fltne - Mathbox for Steven Nguyen

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Theorem fltne 42062

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 16656	. . . . 5 ⊢ 2 ∈ ℙ
2		fltne.n	. . . . 5 ⊢ (𝜑 → 𝑁 ∈ (ℤ_≥‘2))
3		rtprmirr 41900	. . . . 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 3958	. . 3 ⊢ (𝜑 → ¬ (2↑_𝑐(1 / 𝑁)) ∈ ℚ)
6		fltne.c	. . . . . . 7 ⊢ (𝜑 → 𝐶 ∈ ℕ)
7	6	nnzd 12609	. . . . . 6 ⊢ (𝜑 → 𝐶 ∈ ℤ)
8		fltne.a	. . . . . 6 ⊢ (𝜑 → 𝐴 ∈ ℕ)
9		znq 12960	. . . . . 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 2950	. . 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 13005	. . . . . 6 ⊢ 2 ∈ ℝ⁺
16	15	a1i 11	. . . . 5 ⊢ (𝜑 → 2 ∈ ℝ⁺)
17		eluz2nn 12892	. . . . . . 7 ⊢ (𝑁 ∈ (ℤ_≥‘2) → 𝑁 ∈ ℕ)
18	2, 17	syl 17	. . . . . 6 ⊢ (𝜑 → 𝑁 ∈ ℕ)
19	18	nnrecred 12287	. . . . 5 ⊢ (𝜑 → (1 / 𝑁) ∈ ℝ)
20	16, 19	rpcxpcld 26660	. . . 4 ⊢ (𝜑 → (2↑_𝑐(1 / 𝑁)) ∈ ℝ⁺)
21	20	adantr 480	. . 3 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (2↑_𝑐(1 / 𝑁)) ∈ ℝ⁺)
22	6	nnrpd 13040	. . . . 5 ⊢ (𝜑 → 𝐶 ∈ ℝ⁺)
23	8	nnrpd 13040	. . . . 5 ⊢ (𝜑 → 𝐴 ∈ ℝ⁺)
24	22, 23	rpdivcld 13059	. . . 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 12556	. . . . . . . 8 ⊢ (𝜑 → 𝑁 ∈ ℕ₀)
28	8, 27	nnexpcld 14233	. . . . . . 7 ⊢ (𝜑 → (𝐴↑𝑁) ∈ ℕ)
29	28	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (𝐴↑𝑁) ∈ ℕ)
30	29	nncnd 12252	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (𝐴↑𝑁) ∈ ℂ)
31		2cnd 12314	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → 2 ∈ ℂ)
32	29	nnne0d 12286	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (𝐴↑𝑁) ≠ 0)
33	28	nncnd 12252	. . . . . . . 8 ⊢ (𝜑 → (𝐴↑𝑁) ∈ ℂ)
34	33	times2d 12480	. . . . . . 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 7429	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (𝐴↑𝑁) = (𝐵↑𝑁))
38	37	oveq2d 7430	. . . . . 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 12070	. . . 4 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → 2 = ((𝐶↑𝑁) / (𝐴↑𝑁)))
43		2cn 12311	. . . . . 6 ⊢ 2 ∈ ℂ
44		cxproot 26617	. . . . . 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 12252	. . . . . 6 ⊢ (𝜑 → 𝐶 ∈ ℂ)
48	8	nncnd 12252	. . . . . 6 ⊢ (𝜑 → 𝐴 ∈ ℂ)
49	8	nnne0d 12286	. . . . . 6 ⊢ (𝜑 → 𝐴 ≠ 0)
50	47, 48, 49, 27	expdivd 14150	. . . . 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 41878	. 2 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (2↑_𝑐(1 / 𝑁)) = (𝐶 / 𝐴))
54	14, 53	mteqand 3029	1 ⊢ (𝜑 → 𝐴 ≠ 𝐵)

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 = wceq 1534 ∈ wcel 2099 ≠ wne 2936 ∖ cdif 3942 ‘cfv 6542 (class class class)co 7414 ℂcc 11130 ℝcr 11131 1c1 11133 + caddc 11135 · cmul 11137 / cdiv 11895 ℕcn 12236 2c2 12291 ℤcz 12582 ℤ_≥cuz 12846 ℚcq 12956 ℝ⁺crp 13000 ↑cexp 14052 ℙcprime 16635 ↑_𝑐ccxp 26482

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 5279 ax-sep 5293 ax-nul 5300 ax-pow 5359 ax-pr 5423 ax-un 7734 ax-inf2 9658 ax-cnex 11188 ax-resscn 11189 ax-1cn 11190 ax-icn 11191 ax-addcl 11192 ax-addrcl 11193 ax-mulcl 11194 ax-mulrcl 11195 ax-mulcom 11196 ax-addass 11197 ax-mulass 11198 ax-distr 11199 ax-i2m1 11200 ax-1ne0 11201 ax-1rid 11202 ax-rnegex 11203 ax-rrecex 11204 ax-cnre 11205 ax-pre-lttri 11206 ax-pre-lttrn 11207 ax-pre-ltadd 11208 ax-pre-mulgt0 11209 ax-pre-sup 11210 ax-addf 11211

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 2937 df-nel 3043 df-ral 3058 df-rex 3067 df-rmo 3372 df-reu 3373 df-rab 3429 df-v 3472 df-sbc 3776 df-csb 3891 df-dif 3948 df-un 3950 df-in 3952 df-ss 3962 df-pss 3964 df-nul 4319 df-if 4525 df-pw 4600 df-sn 4625 df-pr 4627 df-tp 4629 df-op 4631 df-uni 4904 df-int 4945 df-iun 4993 df-iin 4994 df-br 5143 df-opab 5205 df-mpt 5226 df-tr 5260 df-id 5570 df-eprel 5576 df-po 5584 df-so 5585 df-fr 5627 df-se 5628 df-we 5629 df-xp 5678 df-rel 5679 df-cnv 5680 df-co 5681 df-dm 5682 df-rn 5683 df-res 5684 df-ima 5685 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-isom 6551 df-riota 7370 df-ov 7417 df-oprab 7418 df-mpo 7419 df-of 7679 df-om 7865 df-1st 7987 df-2nd 7988 df-supp 8160 df-frecs 8280 df-wrecs 8311 df-recs 8385 df-rdg 8424 df-1o 8480 df-2o 8481 df-er 8718 df-map 8840 df-pm 8841 df-ixp 8910 df-en 8958 df-dom 8959 df-sdom 8960 df-fin 8961 df-fsupp 9380 df-fi 9428 df-sup 9459 df-inf 9460 df-oi 9527 df-card 9956 df-pnf 11274 df-mnf 11275 df-xr 11276 df-ltxr 11277 df-le 11278 df-sub 11470 df-neg 11471 df-div 11896 df-nn 12237 df-2 12299 df-3 12300 df-4 12301 df-5 12302 df-6 12303 df-7 12304 df-8 12305 df-9 12306 df-n0 12497 df-z 12583 df-dec 12702 df-uz 12847 df-q 12957 df-rp 13001 df-xneg 13118 df-xadd 13119 df-xmul 13120 df-ioo 13354 df-ioc 13355 df-ico 13356 df-icc 13357 df-fz 13511 df-fzo 13654 df-fl 13783 df-mod 13861 df-seq 13993 df-exp 14053 df-fac 14259 df-bc 14288 df-hash 14316 df-shft 15040 df-cj 15072 df-re 15073 df-im 15074 df-sqrt 15208 df-abs 15209 df-limsup 15441 df-clim 15458 df-rlim 15459 df-sum 15659 df-ef 16037 df-sin 16039 df-cos 16040 df-pi 16042 df-dvds 16225 df-gcd 16463 df-prm 16636 df-numer 16700 df-denom 16701 df-struct 17109 df-sets 17126 df-slot 17144 df-ndx 17156 df-base 17174 df-ress 17203 df-plusg 17239 df-mulr 17240 df-starv 17241 df-sca 17242 df-vsca 17243 df-ip 17244 df-tset 17245 df-ple 17246 df-ds 17248 df-unif 17249 df-hom 17250 df-cco 17251 df-rest 17397 df-topn 17398 df-0g 17416 df-gsum 17417 df-topgen 17418 df-pt 17419 df-prds 17422 df-xrs 17477 df-qtop 17482 df-imas 17483 df-xps 17485 df-mre 17559 df-mrc 17560 df-acs 17562 df-mgm 18593 df-sgrp 18672 df-mnd 18688 df-submnd 18734 df-mulg 19017 df-cntz 19261 df-cmn 19730 df-psmet 21264 df-xmet 21265 df-met 21266 df-bl 21267 df-mopn 21268 df-fbas 21269 df-fg 21270 df-cnfld 21273 df-top 22789 df-topon 22806 df-topsp 22828 df-bases 22842 df-cld 22916 df-ntr 22917 df-cls 22918 df-nei 22995 df-lp 23033 df-perf 23034 df-cn 23124 df-cnp 23125 df-haus 23212 df-tx 23459 df-hmeo 23652 df-fil 23743 df-fm 23835 df-flim 23836 df-flf 23837 df-xms 24219 df-ms 24220 df-tms 24221 df-cncf 24791 df-limc 25788 df-dv 25789 df-log 26483 df-cxp 26484

This theorem is referenced by: (None)

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