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| Mirrors > Home > MPE Home > Th. List > nn0disj | Structured version Visualization version GIF version | ||
| Description: The first 𝑁 + 1 elements of the set of nonnegative integers are distinct from any later members. (Contributed by AV, 8-Nov-2019.) |
| Ref | Expression |
|---|---|
| nn0disj | ⊢ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) = ∅ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elinel2 4098 | . . . . . 6 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → 𝑘 ∈ (ℤ≥‘(𝑁 + 1))) | |
| 2 | eluzle 12985 | . . . . . 6 ⊢ (𝑘 ∈ (ℤ≥‘(𝑁 + 1)) → (𝑁 + 1) ≤ 𝑘) | |
| 3 | 1, 2 | syl 18 | . . . . 5 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → (𝑁 + 1) ≤ 𝑘) |
| 4 | eluzel2 12977 | . . . . . . 7 ⊢ (𝑘 ∈ (ℤ≥‘(𝑁 + 1)) → (𝑁 + 1) ∈ ℤ) | |
| 5 | 1, 4 | syl 18 | . . . . . 6 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → (𝑁 + 1) ∈ ℤ) |
| 6 | eluzelz 12982 | . . . . . . 7 ⊢ (𝑘 ∈ (ℤ≥‘(𝑁 + 1)) → 𝑘 ∈ ℤ) | |
| 7 | 1, 6 | syl 18 | . . . . . 6 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → 𝑘 ∈ ℤ) |
| 8 | zlem1lt 12755 | . . . . . 6 ⊢ (((𝑁 + 1) ∈ ℤ ∧ 𝑘 ∈ ℤ) → ((𝑁 + 1) ≤ 𝑘 ↔ ((𝑁 + 1) − 1) < 𝑘)) | |
| 9 | 5, 7, 8 | syl2anc 596 | . . . . 5 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → ((𝑁 + 1) ≤ 𝑘 ↔ ((𝑁 + 1) − 1) < 𝑘)) |
| 10 | 3, 9 | mpbid 235 | . . . 4 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → ((𝑁 + 1) − 1) < 𝑘) |
| 11 | elinel1 4097 | . . . . . 6 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → 𝑘 ∈ (0...𝑁)) | |
| 12 | elfzle2 13668 | . . . . . 6 ⊢ (𝑘 ∈ (0...𝑁) → 𝑘 ≤ 𝑁) | |
| 13 | 11, 12 | syl 18 | . . . . 5 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → 𝑘 ≤ 𝑁) |
| 14 | 7 | zred 12810 | . . . . . . 7 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → 𝑘 ∈ ℝ) |
| 15 | elin 4092 | . . . . . . . . 9 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) ↔ (𝑘 ∈ (0...𝑁) ∧ 𝑘 ∈ (ℤ≥‘(𝑁 + 1)))) | |
| 16 | elfzel2 13661 | . . . . . . . . . 10 ⊢ (𝑘 ∈ (0...𝑁) → 𝑁 ∈ ℤ) | |
| 17 | 16 | adantr 486 | . . . . . . . . 9 ⊢ ((𝑘 ∈ (0...𝑁) ∧ 𝑘 ∈ (ℤ≥‘(𝑁 + 1))) → 𝑁 ∈ ℤ) |
| 18 | 15, 17 | sylbi 220 | . . . . . . . 8 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → 𝑁 ∈ ℤ) |
| 19 | 18 | zred 12810 | . . . . . . 7 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → 𝑁 ∈ ℝ) |
| 20 | 14, 19 | lenltd 11463 | . . . . . 6 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → (𝑘 ≤ 𝑁 ↔ ¬ 𝑁 < 𝑘)) |
| 21 | 18 | zcnd 12811 | . . . . . . . . . 10 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → 𝑁 ∈ ℂ) |
| 22 | pncan1 11747 | . . . . . . . . . 10 ⊢ (𝑁 ∈ ℂ → ((𝑁 + 1) − 1) = 𝑁) | |
| 23 | 21, 22 | syl 18 | . . . . . . . . 9 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → ((𝑁 + 1) − 1) = 𝑁) |
| 24 | 23 | eqcomd 2766 | . . . . . . . 8 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → 𝑁 = ((𝑁 + 1) − 1)) |
| 25 | 24 | breq1d 5112 | . . . . . . 7 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → (𝑁 < 𝑘 ↔ ((𝑁 + 1) − 1) < 𝑘)) |
| 26 | 25 | notbid 321 | . . . . . 6 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → (¬ 𝑁 < 𝑘 ↔ ¬ ((𝑁 + 1) − 1) < 𝑘)) |
| 27 | 20, 26 | bitrd 282 | . . . . 5 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → (𝑘 ≤ 𝑁 ↔ ¬ ((𝑁 + 1) − 1) < 𝑘)) |
| 28 | 13, 27 | mpbid 235 | . . . 4 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → ¬ ((𝑁 + 1) − 1) < 𝑘) |
| 29 | 10, 28 | pm2.21dd 198 | . . 3 ⊢ (𝑘 ∈ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) → 𝑘 ∈ ∅) |
| 30 | 29 | ssriv 3913 | . 2 ⊢ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) ⊆ ∅ |
| 31 | ss0 4351 | . 2 ⊢ (((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) ⊆ ∅ → ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) = ∅) | |
| 32 | 30, 31 | ax-mp 5 | 1 ⊢ ((0...𝑁) ∩ (ℤ≥‘(𝑁 + 1))) = ∅ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 ↔ wb 209 ∧ wa 401 = wceq 1569 ∈ wcel 2144 ⊆ wss 3896 ∩ cin 4088 ∅c0 4277 class class class wbr 5102 ‘cfv 6543 (class class class)co 7424 ℂcc 11205 0cc0 11207 1c1 11208 + caddc 11210 < clt 11350 ≤ cle 11351 − cmin 11548 ℤcz 12700 ℤ≥cuz 12972 ...cfz 13646 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5327 ax-pr 5391 ax-un 7755 ax-cnex 11263 ax-resscn 11264 ax-1cn 11265 ax-icn 11266 ax-addcl 11267 ax-addrcl 11268 ax-mulcl 11269 ax-mulrcl 11270 ax-mulcom 11271 ax-addass 11272 ax-mulass 11273 ax-distr 11274 ax-i2m1 11275 ax-1ne0 11276 ax-1rid 11277 ax-rnegex 11278 ax-rrecex 11279 ax-cnre 11280 ax-pre-lttri 11281 ax-pre-lttrn 11282 ax-pre-ltadd 11283 ax-pre-mulgt0 11284 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3848 df-ss 3897 df-pss 4013 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6307 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6497 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7381 df-ov 7427 df-oprab 7428 df-mpo 7429 df-om 7882 df-1st 8005 df-2nd 8006 df-frecs 8307 df-wrecs 8338 df-recs 8387 df-rdg 8426 df-er 8725 df-en 8982 df-dom 8983 df-sdom 8984 df-pnf 11352 df-mnf 11353 df-xr 11354 df-ltxr 11355 df-le 11356 df-sub 11550 df-neg 11551 df-nn 12343 df-n0 12614 df-z 12701 df-uz 12973 df-fz 13647 |
| This theorem is used by: chfacfscmulgsum 23187 chfacfpmmulgsum 23191 nnuzdisj 46503 |
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