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| Mirrors > Home > MPE Home > Th. List > Mathboxes > etransclem9 | Structured version Visualization version GIF version | ||
| Description: If 𝐾 divides 𝑁 but 𝐾 does not divide 𝑀 then 𝑀 + 𝑁 cannot be zero. (Contributed by Glauco Siliprandi, 5-Apr-2020.) |
| Ref | Expression |
|---|---|
| etransclem9.k | ⊢ (𝜑 → 𝐾 ∈ ℤ) |
| etransclem9.kn0 | ⊢ (𝜑 → 𝐾 ≠ 0) |
| etransclem9.m | ⊢ (𝜑 → 𝑀 ∈ ℤ) |
| etransclem9.n | ⊢ (𝜑 → 𝑁 ∈ ℤ) |
| etransclem9.km | ⊢ (𝜑 → ¬ 𝐾 ∥ 𝑀) |
| etransclem9.kn | ⊢ (𝜑 → 𝐾 ∥ 𝑁) |
| Ref | Expression |
|---|---|
| etransclem9 | ⊢ (𝜑 → (𝑀 + 𝑁) ≠ 0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | etransclem9.km | . . . 4 ⊢ (𝜑 → ¬ 𝐾 ∥ 𝑀) | |
| 2 | etransclem9.k | . . . . 5 ⊢ (𝜑 → 𝐾 ∈ ℤ) | |
| 3 | etransclem9.kn0 | . . . . 5 ⊢ (𝜑 → 𝐾 ≠ 0) | |
| 4 | etransclem9.m | . . . . 5 ⊢ (𝜑 → 𝑀 ∈ ℤ) | |
| 5 | dvdsval2 16186 | . . . . 5 ⊢ ((𝐾 ∈ ℤ ∧ 𝐾 ≠ 0 ∧ 𝑀 ∈ ℤ) → (𝐾 ∥ 𝑀 ↔ (𝑀 / 𝐾) ∈ ℤ)) | |
| 6 | 2, 3, 4, 5 | syl3anc 1374 | . . . 4 ⊢ (𝜑 → (𝐾 ∥ 𝑀 ↔ (𝑀 / 𝐾) ∈ ℤ)) |
| 7 | 1, 6 | mtbid 324 | . . 3 ⊢ (𝜑 → ¬ (𝑀 / 𝐾) ∈ ℤ) |
| 8 | df-neg 11371 | . . . . . . 7 ⊢ -𝑁 = (0 − 𝑁) | |
| 9 | 8 | a1i 11 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑀 + 𝑁) = 0) → -𝑁 = (0 − 𝑁)) |
| 10 | oveq1 7367 | . . . . . . . 8 ⊢ ((𝑀 + 𝑁) = 0 → ((𝑀 + 𝑁) − 𝑁) = (0 − 𝑁)) | |
| 11 | 10 | eqcomd 2743 | . . . . . . 7 ⊢ ((𝑀 + 𝑁) = 0 → (0 − 𝑁) = ((𝑀 + 𝑁) − 𝑁)) |
| 12 | 11 | adantl 481 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑀 + 𝑁) = 0) → (0 − 𝑁) = ((𝑀 + 𝑁) − 𝑁)) |
| 13 | 4 | zcnd 12601 | . . . . . . . 8 ⊢ (𝜑 → 𝑀 ∈ ℂ) |
| 14 | etransclem9.n | . . . . . . . . 9 ⊢ (𝜑 → 𝑁 ∈ ℤ) | |
| 15 | 14 | zcnd 12601 | . . . . . . . 8 ⊢ (𝜑 → 𝑁 ∈ ℂ) |
| 16 | 13, 15 | pncand 11497 | . . . . . . 7 ⊢ (𝜑 → ((𝑀 + 𝑁) − 𝑁) = 𝑀) |
| 17 | 16 | adantr 480 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑀 + 𝑁) = 0) → ((𝑀 + 𝑁) − 𝑁) = 𝑀) |
| 18 | 9, 12, 17 | 3eqtrrd 2777 | . . . . 5 ⊢ ((𝜑 ∧ (𝑀 + 𝑁) = 0) → 𝑀 = -𝑁) |
| 19 | 18 | oveq1d 7375 | . . . 4 ⊢ ((𝜑 ∧ (𝑀 + 𝑁) = 0) → (𝑀 / 𝐾) = (-𝑁 / 𝐾)) |
| 20 | etransclem9.kn | . . . . . . 7 ⊢ (𝜑 → 𝐾 ∥ 𝑁) | |
| 21 | dvdsnegb 16204 | . . . . . . . 8 ⊢ ((𝐾 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝐾 ∥ 𝑁 ↔ 𝐾 ∥ -𝑁)) | |
| 22 | 2, 14, 21 | syl2anc 585 | . . . . . . 7 ⊢ (𝜑 → (𝐾 ∥ 𝑁 ↔ 𝐾 ∥ -𝑁)) |
| 23 | 20, 22 | mpbid 232 | . . . . . 6 ⊢ (𝜑 → 𝐾 ∥ -𝑁) |
| 24 | 14 | znegcld 12602 | . . . . . . 7 ⊢ (𝜑 → -𝑁 ∈ ℤ) |
| 25 | dvdsval2 16186 | . . . . . . 7 ⊢ ((𝐾 ∈ ℤ ∧ 𝐾 ≠ 0 ∧ -𝑁 ∈ ℤ) → (𝐾 ∥ -𝑁 ↔ (-𝑁 / 𝐾) ∈ ℤ)) | |
| 26 | 2, 3, 24, 25 | syl3anc 1374 | . . . . . 6 ⊢ (𝜑 → (𝐾 ∥ -𝑁 ↔ (-𝑁 / 𝐾) ∈ ℤ)) |
| 27 | 23, 26 | mpbid 232 | . . . . 5 ⊢ (𝜑 → (-𝑁 / 𝐾) ∈ ℤ) |
| 28 | 27 | adantr 480 | . . . 4 ⊢ ((𝜑 ∧ (𝑀 + 𝑁) = 0) → (-𝑁 / 𝐾) ∈ ℤ) |
| 29 | 19, 28 | eqeltrd 2837 | . . 3 ⊢ ((𝜑 ∧ (𝑀 + 𝑁) = 0) → (𝑀 / 𝐾) ∈ ℤ) |
| 30 | 7, 29 | mtand 816 | . 2 ⊢ (𝜑 → ¬ (𝑀 + 𝑁) = 0) |
| 31 | 30 | neqned 2940 | 1 ⊢ (𝜑 → (𝑀 + 𝑁) ≠ 0) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1542 ∈ wcel 2114 ≠ wne 2933 class class class wbr 5099 (class class class)co 7360 0cc0 11030 + caddc 11033 − cmin 11368 -cneg 11369 / cdiv 11798 ℤcz 12492 ∥ cdvds 16183 |
| 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 2709 ax-sep 5242 ax-nul 5252 ax-pow 5311 ax-pr 5378 ax-un 7682 ax-resscn 11087 ax-1cn 11088 ax-icn 11089 ax-addcl 11090 ax-addrcl 11091 ax-mulcl 11092 ax-mulrcl 11093 ax-mulcom 11094 ax-addass 11095 ax-mulass 11096 ax-distr 11097 ax-i2m1 11098 ax-1ne0 11099 ax-1rid 11100 ax-rnegex 11101 ax-rrecex 11102 ax-cnre 11103 ax-pre-lttri 11104 ax-pre-lttrn 11105 ax-pre-ltadd 11106 ax-pre-mulgt0 11107 |
| 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 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3062 df-rmo 3351 df-reu 3352 df-rab 3401 df-v 3443 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4287 df-if 4481 df-pw 4557 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-iun 4949 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6260 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-2nd 7936 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-div 11799 df-nn 12150 df-z 12493 df-dvds 16184 |
| This theorem is referenced by: etransclem44 46589 |
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