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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 16451 | . . . . 5 ⊢ ((𝐾 ∈ ℤ ∧ 𝐾 ≠ 0 ∧ 𝑀 ∈ ℤ) → (𝐾 ∥ 𝑀 ↔ (𝑀 / 𝐾) ∈ ℤ)) | |
| 6 | 2, 3, 4, 5 | syl3anc 1399 | . . . 4 ⊢ (𝜑 → (𝐾 ∥ 𝑀 ↔ (𝑀 / 𝐾) ∈ ℤ)) |
| 7 | 1, 6 | mtbid 327 | . . 3 ⊢ (𝜑 → ¬ (𝑀 / 𝐾) ∈ ℤ) |
| 8 | df-neg 11568 | . . . . . . 7 ⊢ -𝑁 = (0 − 𝑁) | |
| 9 | 8 | a1i 11 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑀 + 𝑁) = 0) → -𝑁 = (0 − 𝑁)) |
| 10 | oveq1 7447 | . . . . . . . 8 ⊢ ((𝑀 + 𝑁) = 0 → ((𝑀 + 𝑁) − 𝑁) = (0 − 𝑁)) | |
| 11 | 10 | eqcomd 2769 | . . . . . . 7 ⊢ ((𝑀 + 𝑁) = 0 → (0 − 𝑁) = ((𝑀 + 𝑁) − 𝑁)) |
| 12 | 11 | adantl 487 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑀 + 𝑁) = 0) → (0 − 𝑁) = ((𝑀 + 𝑁) − 𝑁)) |
| 13 | 4 | zcnd 12828 | . . . . . . . 8 ⊢ (𝜑 → 𝑀 ∈ ℂ) |
| 14 | etransclem9.n | . . . . . . . . 9 ⊢ (𝜑 → 𝑁 ∈ ℤ) | |
| 15 | 14 | zcnd 12828 | . . . . . . . 8 ⊢ (𝜑 → 𝑁 ∈ ℂ) |
| 16 | 13, 15 | pncand 11694 | . . . . . . 7 ⊢ (𝜑 → ((𝑀 + 𝑁) − 𝑁) = 𝑀) |
| 17 | 16 | adantr 486 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑀 + 𝑁) = 0) → ((𝑀 + 𝑁) − 𝑁) = 𝑀) |
| 18 | 9, 12, 17 | 3eqtrrd 2803 | . . . . 5 ⊢ ((𝜑 ∧ (𝑀 + 𝑁) = 0) → 𝑀 = -𝑁) |
| 19 | 18 | oveq1d 7455 | . . . 4 ⊢ ((𝜑 ∧ (𝑀 + 𝑁) = 0) → (𝑀 / 𝐾) = ( -𝑁 / 𝐾)) |
| 20 | etransclem9.kn | . . . . . . 7 ⊢ (𝜑 → 𝐾 ∥ 𝑁) | |
| 21 | dvdsnegb 16469 | . . . . . . . 8 ⊢ ((𝐾 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝐾 ∥ 𝑁 ↔ 𝐾 ∥ -𝑁)) | |
| 22 | 2, 14, 21 | syl2anc 596 | . . . . . . 7 ⊢ (𝜑 → (𝐾 ∥ 𝑁 ↔ 𝐾 ∥ -𝑁)) |
| 23 | 20, 22 | mpbid 235 | . . . . . 6 ⊢ (𝜑 → 𝐾 ∥ -𝑁) |
| 24 | 14 | znegcld 12829 | . . . . . . 7 ⊢ (𝜑 → -𝑁 ∈ ℤ) |
| 25 | dvdsval2 16451 | . . . . . . 7 ⊢ ((𝐾 ∈ ℤ ∧ 𝐾 ≠ 0 ∧ -𝑁 ∈ ℤ) → (𝐾 ∥ -𝑁 ↔ ( -𝑁 / 𝐾) ∈ ℤ)) | |
| 26 | 2, 3, 24, 25 | syl3anc 1399 | . . . . . 6 ⊢ (𝜑 → (𝐾 ∥ -𝑁 ↔ ( -𝑁 / 𝐾) ∈ ℤ)) |
| 27 | 23, 26 | mpbid 235 | . . . . 5 ⊢ (𝜑 → ( -𝑁 / 𝐾) ∈ ℤ) |
| 28 | 27 | adantr 486 | . . . 4 ⊢ ((𝜑 ∧ (𝑀 + 𝑁) = 0) → ( -𝑁 / 𝐾) ∈ ℤ) |
| 29 | 19, 28 | eqeltrd 2864 | . . 3 ⊢ ((𝜑 ∧ (𝑀 + 𝑁) = 0) → (𝑀 / 𝐾) ∈ ℤ) |
| 30 | 7, 29 | mtand 828 | . 2 ⊢ (𝜑 → ¬ (𝑀 + 𝑁) = 0) |
| 31 | 30 | neqned 2966 | 1 ⊢ (𝜑 → (𝑀 + 𝑁) ≠ 0) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∈ wcel 2147 ≠ wne 2959 class class class wbr 5106 (class class class)co 7440 0cc0 11224 + caddc 11227 − cmin 11565 -cneg 11566 / cdiv 11997 ℤcz 12717 ∥ cdvds 16448 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7772 ax-resscn 11281 ax-1cn 11282 ax-icn 11283 ax-addcl 11284 ax-addrcl 11285 ax-mulcl 11286 ax-mulrcl 11287 ax-mulcom 11288 ax-addass 11289 ax-mulass 11290 ax-distr 11291 ax-i2m1 11292 ax-1ne0 11293 ax-1rid 11294 ax-rnegex 11295 ax-rrecex 11296 ax-cnre 11297 ax-pre-lttri 11298 ax-pre-lttrn 11299 ax-pre-ltadd 11300 ax-pre-mulgt0 11301 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5171 df-mpt 5190 df-tr 5216 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6319 df-ord 6380 df-on 6381 df-lim 6382 df-suc 6383 df-iota 6509 df-fun 6557 df-fn 6558 df-f 6559 df-f1 6560 df-fo 6561 df-f1o 6562 df-fv 6563 df-riota 7397 df-ov 7443 df-oprab 7444 df-mpo 7445 df-om 7899 df-2nd 8023 df-frecs 8324 df-wrecs 8355 df-recs 8404 df-rdg 8443 df-er 8742 df-en 8999 df-dom 9000 df-sdom 9001 df-pnf 11369 df-mnf 11370 df-xr 11371 df-ltxr 11372 df-le 11373 df-sub 11567 df-neg 11568 df-div 11998 df-nn 12360 df-z 12718 df-dvds 16449 |
| This theorem is used by: etransclem44 47491 |
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