fltne - Mathbox for Steven Nguyen

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Theorem fltne 42599

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 16739	. . . . 5 ⊢ 2 ∈ ℙ
2		fltne.n	. . . . 5 ⊢ (𝜑 → 𝑁 ∈ (ℤ_≥‘2))
3		rtprmirr 26821	. . . . 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 3989	. . 3 ⊢ (𝜑 → ¬ (2↑_𝑐(1 / 𝑁)) ∈ ℚ)
6		fltne.c	. . . . . . 7 ⊢ (𝜑 → 𝐶 ∈ ℕ)
7	6	nnzd 12666	. . . . . 6 ⊢ (𝜑 → 𝐶 ∈ ℤ)
8		fltne.a	. . . . . 6 ⊢ (𝜑 → 𝐴 ∈ ℕ)
9		znq 13017	. . . . . 6 ⊢ ((𝐶 ∈ ℤ ∧ 𝐴 ∈ ℕ) → (𝐶 / 𝐴) ∈ ℚ)
10	7, 8, 9	syl2anc 583	. . . . 5 ⊢ (𝜑 → (𝐶 / 𝐴) ∈ ℚ)
11		eleq1a 2839	. . . . 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 2960	. . 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 13062	. . . . . 6 ⊢ 2 ∈ ℝ⁺
16	15	a1i 11	. . . . 5 ⊢ (𝜑 → 2 ∈ ℝ⁺)
17		eluz2nn 12949	. . . . . . 7 ⊢ (𝑁 ∈ (ℤ_≥‘2) → 𝑁 ∈ ℕ)
18	2, 17	syl 17	. . . . . 6 ⊢ (𝜑 → 𝑁 ∈ ℕ)
19	18	nnrecred 12344	. . . . 5 ⊢ (𝜑 → (1 / 𝑁) ∈ ℝ)
20	16, 19	rpcxpcld 26793	. . . 4 ⊢ (𝜑 → (2↑_𝑐(1 / 𝑁)) ∈ ℝ⁺)
21	20	adantr 480	. . 3 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (2↑_𝑐(1 / 𝑁)) ∈ ℝ⁺)
22	6	nnrpd 13097	. . . . 5 ⊢ (𝜑 → 𝐶 ∈ ℝ⁺)
23	8	nnrpd 13097	. . . . 5 ⊢ (𝜑 → 𝐴 ∈ ℝ⁺)
24	22, 23	rpdivcld 13116	. . . 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 12613	. . . . . . . 8 ⊢ (𝜑 → 𝑁 ∈ ℕ₀)
28	8, 27	nnexpcld 14294	. . . . . . 7 ⊢ (𝜑 → (𝐴↑𝑁) ∈ ℕ)
29	28	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (𝐴↑𝑁) ∈ ℕ)
30	29	nncnd 12309	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (𝐴↑𝑁) ∈ ℂ)
31		2cnd 12371	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → 2 ∈ ℂ)
32	29	nnne0d 12343	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (𝐴↑𝑁) ≠ 0)
33	28	nncnd 12309	. . . . . . . 8 ⊢ (𝜑 → (𝐴↑𝑁) ∈ ℂ)
34	33	times2d 12537	. . . . . . 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 7463	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (𝐴↑𝑁) = (𝐵↑𝑁))
38	37	oveq2d 7464	. . . . . 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 2784	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → ((𝐴↑𝑁) · 2) = (𝐶↑𝑁))
42	30, 31, 32, 41	mvllmuld 12126	. . . 4 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → 2 = ((𝐶↑𝑁) / (𝐴↑𝑁)))
43		2cn 12368	. . . . . 6 ⊢ 2 ∈ ℂ
44		cxproot 26750	. . . . . 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 12309	. . . . . 6 ⊢ (𝜑 → 𝐶 ∈ ℂ)
48	8	nncnd 12309	. . . . . 6 ⊢ (𝜑 → 𝐴 ∈ ℂ)
49	8	nnne0d 12343	. . . . . 6 ⊢ (𝜑 → 𝐴 ≠ 0)
50	47, 48, 49, 27	expdivd 14210	. . . . 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 2790	. . 3 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → ((2↑_𝑐(1 / 𝑁))↑𝑁) = ((𝐶 / 𝐴)↑𝑁))
53	21, 25, 26, 52	exp11nnd 14310	. 2 ⊢ ((𝜑 ∧ 𝐴 = 𝐵) → (2↑_𝑐(1 / 𝑁)) = (𝐶 / 𝐴))
54	14, 53	mteqand 3039	1 ⊢ (𝜑 → 𝐴 ≠ 𝐵)

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 = wceq 1537 ∈ wcel 2108 ≠ wne 2946 ∖ cdif 3973 ‘cfv 6573 (class class class)co 7448 ℂcc 11182 ℝcr 11183 1c1 11185 + caddc 11187 · cmul 11189 / cdiv 11947 ℕcn 12293 2c2 12348 ℤcz 12639 ℤ_≥cuz 12903 ℚcq 13013 ℝ⁺crp 13057 ↑cexp 14112 ℙcprime 16718 ↑_𝑐ccxp 26615

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2158 ax-12 2178 ax-ext 2711 ax-rep 5303 ax-sep 5317 ax-nul 5324 ax-pow 5383 ax-pr 5447 ax-un 7770 ax-inf2 9710 ax-cnex 11240 ax-resscn 11241 ax-1cn 11242 ax-icn 11243 ax-addcl 11244 ax-addrcl 11245 ax-mulcl 11246 ax-mulrcl 11247 ax-mulcom 11248 ax-addass 11249 ax-mulass 11250 ax-distr 11251 ax-i2m1 11252 ax-1ne0 11253 ax-1rid 11254 ax-rnegex 11255 ax-rrecex 11256 ax-cnre 11257 ax-pre-lttri 11258 ax-pre-lttrn 11259 ax-pre-ltadd 11260 ax-pre-mulgt0 11261 ax-pre-sup 11262 ax-addf 11263

This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3or 1088 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-nf 1782 df-sb 2065 df-mo 2543 df-eu 2572 df-clab 2718 df-cleq 2732 df-clel 2819 df-nfc 2895 df-ne 2947 df-nel 3053 df-ral 3068 df-rex 3077 df-rmo 3388 df-reu 3389 df-rab 3444 df-v 3490 df-sbc 3805 df-csb 3922 df-dif 3979 df-un 3981 df-in 3983 df-ss 3993 df-pss 3996 df-nul 4353 df-if 4549 df-pw 4624 df-sn 4649 df-pr 4651 df-tp 4653 df-op 4655 df-uni 4932 df-int 4971 df-iun 5017 df-iin 5018 df-br 5167 df-opab 5229 df-mpt 5250 df-tr 5284 df-id 5593 df-eprel 5599 df-po 5607 df-so 5608 df-fr 5652 df-se 5653 df-we 5654 df-xp 5706 df-rel 5707 df-cnv 5708 df-co 5709 df-dm 5710 df-rn 5711 df-res 5712 df-ima 5713 df-pred 6332 df-ord 6398 df-on 6399 df-lim 6400 df-suc 6401 df-iota 6525 df-fun 6575 df-fn 6576 df-f 6577 df-f1 6578 df-fo 6579 df-f1o 6580 df-fv 6581 df-isom 6582 df-riota 7404 df-ov 7451 df-oprab 7452 df-mpo 7453 df-of 7714 df-om 7904 df-1st 8030 df-2nd 8031 df-supp 8202 df-frecs 8322 df-wrecs 8353 df-recs 8427 df-rdg 8466 df-1o 8522 df-2o 8523 df-er 8763 df-map 8886 df-pm 8887 df-ixp 8956 df-en 9004 df-dom 9005 df-sdom 9006 df-fin 9007 df-fsupp 9432 df-fi 9480 df-sup 9511 df-inf 9512 df-oi 9579 df-card 10008 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 df-sub 11522 df-neg 11523 df-div 11948 df-nn 12294 df-2 12356 df-3 12357 df-4 12358 df-5 12359 df-6 12360 df-7 12361 df-8 12362 df-9 12363 df-n0 12554 df-z 12640 df-dec 12759 df-uz 12904 df-q 13014 df-rp 13058 df-xneg 13175 df-xadd 13176 df-xmul 13177 df-ioo 13411 df-ioc 13412 df-ico 13413 df-icc 13414 df-fz 13568 df-fzo 13712 df-fl 13843 df-mod 13921 df-seq 14053 df-exp 14113 df-fac 14323 df-bc 14352 df-hash 14380 df-shft 15116 df-cj 15148 df-re 15149 df-im 15150 df-sqrt 15284 df-abs 15285 df-limsup 15517 df-clim 15534 df-rlim 15535 df-sum 15735 df-ef 16115 df-sin 16117 df-cos 16118 df-pi 16120 df-dvds 16303 df-gcd 16541 df-prm 16719 df-numer 16782 df-denom 16783 df-struct 17194 df-sets 17211 df-slot 17229 df-ndx 17241 df-base 17259 df-ress 17288 df-plusg 17324 df-mulr 17325 df-starv 17326 df-sca 17327 df-vsca 17328 df-ip 17329 df-tset 17330 df-ple 17331 df-ds 17333 df-unif 17334 df-hom 17335 df-cco 17336 df-rest 17482 df-topn 17483 df-0g 17501 df-gsum 17502 df-topgen 17503 df-pt 17504 df-prds 17507 df-xrs 17562 df-qtop 17567 df-imas 17568 df-xps 17570 df-mre 17644 df-mrc 17645 df-acs 17647 df-mgm 18678 df-sgrp 18757 df-mnd 18773 df-submnd 18819 df-mulg 19108 df-cntz 19357 df-cmn 19824 df-psmet 21379 df-xmet 21380 df-met 21381 df-bl 21382 df-mopn 21383 df-fbas 21384 df-fg 21385 df-cnfld 21388 df-top 22921 df-topon 22938 df-topsp 22960 df-bases 22974 df-cld 23048 df-ntr 23049 df-cls 23050 df-nei 23127 df-lp 23165 df-perf 23166 df-cn 23256 df-cnp 23257 df-haus 23344 df-tx 23591 df-hmeo 23784 df-fil 23875 df-fm 23967 df-flim 23968 df-flf 23969 df-xms 24351 df-ms 24352 df-tms 24353 df-cncf 24923 df-limc 25921 df-dv 25922 df-log 26616 df-cxp 26617

This theorem is referenced by: (None)

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