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| Mirrors > Home > MPE Home > Th. List > Mathboxes > fltdvdsabdvdsc | Structured version Visualization version GIF version | ||
| Description: Any factor of both 𝐴 and 𝐵 also divides 𝐶. This establishes the validity of fltabcoprmex 43072. (Contributed by SN, 21-Aug-2024.) |
| Ref | Expression |
|---|---|
| fltdvdsabdvdsc.a | ⊢ (𝜑 → 𝐴 ∈ ℕ) |
| fltdvdsabdvdsc.b | ⊢ (𝜑 → 𝐵 ∈ ℕ) |
| fltdvdsabdvdsc.c | ⊢ (𝜑 → 𝐶 ∈ ℕ) |
| fltdvdsabdvdsc.n | ⊢ (𝜑 → 𝑁 ∈ ℕ) |
| fltdvdsabdvdsc.1 | ⊢ (𝜑 → ((𝐴↑𝑁) + (𝐵↑𝑁)) = (𝐶↑𝑁)) |
| Ref | Expression |
|---|---|
| fltdvdsabdvdsc | ⊢ (𝜑 → (𝐴 gcd 𝐵) ∥ 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fltdvdsabdvdsc.a | . . . . . . 7 ⊢ (𝜑 → 𝐴 ∈ ℕ) | |
| 2 | fltdvdsabdvdsc.b | . . . . . . 7 ⊢ (𝜑 → 𝐵 ∈ ℕ) | |
| 3 | gcdnncl 16476 | . . . . . . 7 ⊢ ((𝐴 ∈ ℕ ∧ 𝐵 ∈ ℕ) → (𝐴 gcd 𝐵) ∈ ℕ) | |
| 4 | 1, 2, 3 | syl2anc 585 | . . . . . 6 ⊢ (𝜑 → (𝐴 gcd 𝐵) ∈ ℕ) |
| 5 | fltdvdsabdvdsc.n | . . . . . . 7 ⊢ (𝜑 → 𝑁 ∈ ℕ) | |
| 6 | 5 | nnnn0d 12498 | . . . . . 6 ⊢ (𝜑 → 𝑁 ∈ ℕ0) |
| 7 | 4, 6 | nnexpcld 14207 | . . . . 5 ⊢ (𝜑 → ((𝐴 gcd 𝐵)↑𝑁) ∈ ℕ) |
| 8 | 7 | nnzd 12550 | . . . 4 ⊢ (𝜑 → ((𝐴 gcd 𝐵)↑𝑁) ∈ ℤ) |
| 9 | 1, 6 | nnexpcld 14207 | . . . . 5 ⊢ (𝜑 → (𝐴↑𝑁) ∈ ℕ) |
| 10 | 9 | nnzd 12550 | . . . 4 ⊢ (𝜑 → (𝐴↑𝑁) ∈ ℤ) |
| 11 | 2, 6 | nnexpcld 14207 | . . . . 5 ⊢ (𝜑 → (𝐵↑𝑁) ∈ ℕ) |
| 12 | 11 | nnzd 12550 | . . . 4 ⊢ (𝜑 → (𝐵↑𝑁) ∈ ℤ) |
| 13 | 4 | nnzd 12550 | . . . . 5 ⊢ (𝜑 → (𝐴 gcd 𝐵) ∈ ℤ) |
| 14 | 1 | nnzd 12550 | . . . . 5 ⊢ (𝜑 → 𝐴 ∈ ℤ) |
| 15 | 2 | nnzd 12550 | . . . . . . 7 ⊢ (𝜑 → 𝐵 ∈ ℤ) |
| 16 | gcddvds 16472 | . . . . . . 7 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ) → ((𝐴 gcd 𝐵) ∥ 𝐴 ∧ (𝐴 gcd 𝐵) ∥ 𝐵)) | |
| 17 | 14, 15, 16 | syl2anc 585 | . . . . . 6 ⊢ (𝜑 → ((𝐴 gcd 𝐵) ∥ 𝐴 ∧ (𝐴 gcd 𝐵) ∥ 𝐵)) |
| 18 | 17 | simpld 494 | . . . . 5 ⊢ (𝜑 → (𝐴 gcd 𝐵) ∥ 𝐴) |
| 19 | 13, 14, 6, 18 | dvdsexpad 42764 | . . . 4 ⊢ (𝜑 → ((𝐴 gcd 𝐵)↑𝑁) ∥ (𝐴↑𝑁)) |
| 20 | 17 | simprd 495 | . . . . 5 ⊢ (𝜑 → (𝐴 gcd 𝐵) ∥ 𝐵) |
| 21 | 13, 15, 6, 20 | dvdsexpad 42764 | . . . 4 ⊢ (𝜑 → ((𝐴 gcd 𝐵)↑𝑁) ∥ (𝐵↑𝑁)) |
| 22 | 8, 10, 12, 19, 21 | dvds2addd 16261 | . . 3 ⊢ (𝜑 → ((𝐴 gcd 𝐵)↑𝑁) ∥ ((𝐴↑𝑁) + (𝐵↑𝑁))) |
| 23 | fltdvdsabdvdsc.1 | . . 3 ⊢ (𝜑 → ((𝐴↑𝑁) + (𝐵↑𝑁)) = (𝐶↑𝑁)) | |
| 24 | 22, 23 | breqtrd 5111 | . 2 ⊢ (𝜑 → ((𝐴 gcd 𝐵)↑𝑁) ∥ (𝐶↑𝑁)) |
| 25 | fltdvdsabdvdsc.c | . . 3 ⊢ (𝜑 → 𝐶 ∈ ℕ) | |
| 26 | dvdsexpnn 42765 | . . 3 ⊢ (((𝐴 gcd 𝐵) ∈ ℕ ∧ 𝐶 ∈ ℕ ∧ 𝑁 ∈ ℕ) → ((𝐴 gcd 𝐵) ∥ 𝐶 ↔ ((𝐴 gcd 𝐵)↑𝑁) ∥ (𝐶↑𝑁))) | |
| 27 | 4, 25, 5, 26 | syl3anc 1374 | . 2 ⊢ (𝜑 → ((𝐴 gcd 𝐵) ∥ 𝐶 ↔ ((𝐴 gcd 𝐵)↑𝑁) ∥ (𝐶↑𝑁))) |
| 28 | 24, 27 | mpbird 257 | 1 ⊢ (𝜑 → (𝐴 gcd 𝐵) ∥ 𝐶) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1542 ∈ wcel 2114 class class class wbr 5085 (class class class)co 7367 + caddc 11041 ℕcn 12174 ℤcz 12524 ↑cexp 14023 ∥ cdvds 16221 gcd cgcd 16463 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 ax-pre-sup 11116 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3062 df-rmo 3342 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-pss 3909 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-iun 4935 df-br 5086 df-opab 5148 df-mpt 5167 df-tr 5193 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6265 df-ord 6326 df-on 6327 df-lim 6328 df-suc 6329 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-om 7818 df-2nd 7943 df-frecs 8231 df-wrecs 8262 df-recs 8311 df-rdg 8349 df-er 8643 df-en 8894 df-dom 8895 df-sdom 8896 df-sup 9355 df-inf 9356 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 df-sub 11379 df-neg 11380 df-div 11808 df-nn 12175 df-2 12244 df-3 12245 df-n0 12438 df-z 12525 df-uz 12789 df-rp 12943 df-fl 13751 df-mod 13829 df-seq 13964 df-exp 14024 df-cj 15061 df-re 15062 df-im 15063 df-sqrt 15197 df-abs 15198 df-dvds 16222 df-gcd 16464 |
| This theorem is referenced by: flt4lem2 43080 |
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