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| Mirrors > Home > ILE Home > Th. List > hashfz | GIF version | ||
| Description: Value of the numeric cardinality of a nonempty integer range. (Contributed by Stefan O'Rear, 12-Sep-2014.) (Proof shortened by Mario Carneiro, 15-Apr-2015.) |
| Ref | Expression |
|---|---|
| hashfz | ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (♯‘(𝐴...𝐵)) = ((𝐵 − 𝐴) + 1)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eluzel2 9858 | . . . . 5 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → 𝐴 ∈ ℤ) | |
| 2 | eluzelz 9863 | . . . . 5 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → 𝐵 ∈ ℤ) | |
| 3 | 1z 9603 | . . . . . 6 ⊢ 1 ∈ ℤ | |
| 4 | zsubcl 9618 | . . . . . 6 ⊢ ((1 ∈ ℤ ∧ 𝐴 ∈ ℤ) → (1 − 𝐴) ∈ ℤ) | |
| 5 | 3, 1, 4 | sylancr 414 | . . . . 5 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (1 − 𝐴) ∈ ℤ) |
| 6 | fzen 10377 | . . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℤ ∧ (1 − 𝐴) ∈ ℤ) → (𝐴...𝐵) ≈ ((𝐴 + (1 − 𝐴))...(𝐵 + (1 − 𝐴)))) | |
| 7 | 1, 2, 5, 6 | syl3anc 1274 | . . . 4 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝐴...𝐵) ≈ ((𝐴 + (1 − 𝐴))...(𝐵 + (1 − 𝐴)))) |
| 8 | 1 | zcnd 9701 | . . . . . 6 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → 𝐴 ∈ ℂ) |
| 9 | ax-1cn 8220 | . . . . . 6 ⊢ 1 ∈ ℂ | |
| 10 | pncan3 8481 | . . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 1 ∈ ℂ) → (𝐴 + (1 − 𝐴)) = 1) | |
| 11 | 8, 9, 10 | sylancl 413 | . . . . 5 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝐴 + (1 − 𝐴)) = 1) |
| 12 | 1cnd 8290 | . . . . . 6 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → 1 ∈ ℂ) | |
| 13 | 2 | zcnd 9701 | . . . . . . 7 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → 𝐵 ∈ ℂ) |
| 14 | 13, 8 | subcld 8584 | . . . . . 6 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝐵 − 𝐴) ∈ ℂ) |
| 15 | 13, 12, 8 | addsub12d 8607 | . . . . . 6 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝐵 + (1 − 𝐴)) = (1 + (𝐵 − 𝐴))) |
| 16 | 12, 14, 15 | comraddd 8430 | . . . . 5 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝐵 + (1 − 𝐴)) = ((𝐵 − 𝐴) + 1)) |
| 17 | 11, 16 | oveq12d 6068 | . . . 4 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → ((𝐴 + (1 − 𝐴))...(𝐵 + (1 − 𝐴))) = (1...((𝐵 − 𝐴) + 1))) |
| 18 | 7, 17 | breqtrd 4135 | . . 3 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝐴...𝐵) ≈ (1...((𝐵 − 𝐴) + 1))) |
| 19 | 1, 2 | fzfigd 10793 | . . . 4 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝐴...𝐵) ∈ Fin) |
| 20 | 1zzd 9604 | . . . . 5 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → 1 ∈ ℤ) | |
| 21 | 2, 1 | zsubcld 9705 | . . . . . 6 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝐵 − 𝐴) ∈ ℤ) |
| 22 | 21 | peano2zd 9703 | . . . . 5 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → ((𝐵 − 𝐴) + 1) ∈ ℤ) |
| 23 | 20, 22 | fzfigd 10793 | . . . 4 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (1...((𝐵 − 𝐴) + 1)) ∈ Fin) |
| 24 | hashen 11147 | . . . 4 ⊢ (((𝐴...𝐵) ∈ Fin ∧ (1...((𝐵 − 𝐴) + 1)) ∈ Fin) → ((♯‘(𝐴...𝐵)) = (♯‘(1...((𝐵 − 𝐴) + 1))) ↔ (𝐴...𝐵) ≈ (1...((𝐵 − 𝐴) + 1)))) | |
| 25 | 19, 23, 24 | syl2anc 411 | . . 3 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → ((♯‘(𝐴...𝐵)) = (♯‘(1...((𝐵 − 𝐴) + 1))) ↔ (𝐴...𝐵) ≈ (1...((𝐵 − 𝐴) + 1)))) |
| 26 | 18, 25 | mpbird 167 | . 2 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (♯‘(𝐴...𝐵)) = (♯‘(1...((𝐵 − 𝐴) + 1)))) |
| 27 | uznn0sub 9886 | . . 3 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (𝐵 − 𝐴) ∈ ℕ0) | |
| 28 | peano2nn0 9536 | . . 3 ⊢ ((𝐵 − 𝐴) ∈ ℕ0 → ((𝐵 − 𝐴) + 1) ∈ ℕ0) | |
| 29 | hashfz1 11146 | . . 3 ⊢ (((𝐵 − 𝐴) + 1) ∈ ℕ0 → (♯‘(1...((𝐵 − 𝐴) + 1))) = ((𝐵 − 𝐴) + 1)) | |
| 30 | 27, 28, 29 | 3syl 17 | . 2 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (♯‘(1...((𝐵 − 𝐴) + 1))) = ((𝐵 − 𝐴) + 1)) |
| 31 | 26, 30 | eqtrd 2265 | 1 ⊢ (𝐵 ∈ (ℤ≥‘𝐴) → (♯‘(𝐴...𝐵)) = ((𝐵 − 𝐴) + 1)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1398 ∈ wcel 2203 class class class wbr 4109 ‘cfv 5352 (class class class)co 6050 ≈ cen 6973 Fincfn 6975 ℂcc 8125 1c1 8128 + caddc 8130 − cmin 8444 ℕ0cn0 9496 ℤcz 9577 ℤ≥cuz 9853 ...cfz 10342 ♯chash 11138 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2205 ax-14 2206 ax-ext 2214 ax-coll 4225 ax-sep 4228 ax-nul 4236 ax-pow 4287 ax-pr 4322 ax-un 4554 ax-setind 4659 ax-iinf 4710 ax-cnex 8218 ax-resscn 8219 ax-1cn 8220 ax-1re 8221 ax-icn 8222 ax-addcl 8223 ax-addrcl 8224 ax-mulcl 8225 ax-addcom 8227 ax-addass 8229 ax-distr 8231 ax-i2m1 8232 ax-0lt1 8233 ax-0id 8235 ax-rnegex 8236 ax-cnre 8238 ax-pre-ltirr 8239 ax-pre-ltwlin 8240 ax-pre-lttrn 8241 ax-pre-apti 8242 ax-pre-ltadd 8243 |
| This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ne 2413 df-nel 2508 df-ral 2525 df-rex 2526 df-reu 2527 df-rab 2529 df-v 2815 df-sbc 3043 df-csb 3139 df-dif 3213 df-un 3215 df-in 3217 df-ss 3224 df-nul 3509 df-pw 3671 df-sn 3695 df-pr 3696 df-op 3698 df-uni 3915 df-int 3950 df-iun 3993 df-br 4110 df-opab 4172 df-mpt 4173 df-tr 4209 df-id 4414 df-iord 4487 df-on 4489 df-ilim 4490 df-suc 4492 df-iom 4713 df-xp 4755 df-rel 4756 df-cnv 4757 df-co 4758 df-dm 4759 df-rn 4760 df-res 4761 df-ima 4762 df-iota 5312 df-fun 5354 df-fn 5355 df-f 5356 df-f1 5357 df-fo 5358 df-f1o 5359 df-fv 5360 df-riota 6003 df-ov 6053 df-oprab 6054 df-mpo 6055 df-1st 6334 df-2nd 6335 df-recs 6536 df-frec 6622 df-1o 6647 df-er 6767 df-en 6976 df-dom 6977 df-fin 6978 df-pnf 8310 df-mnf 8311 df-xr 8312 df-ltxr 8313 df-le 8314 df-sub 8446 df-neg 8447 df-inn 9238 df-n0 9497 df-z 9578 df-uz 9854 df-fz 10343 df-ihash 11139 |
| This theorem is referenced by: hashfzo 11187 hashfzp1 11189 hashfz0 11190 ballotfilem2 13142 0sgmppw 15861 gausslemma2dlem5 15939 gsumgfsum 16866 |
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