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| Mirrors > Home > ILE Home > Th. List > pw2dvdseulemle | GIF version | ||
| Description: Lemma for pw2dvdseu 12873. Powers of two which do and do not divide a natural number. (Contributed by Jim Kingdon, 17-Nov-2021.) |
| Ref | Expression |
|---|---|
| pw2dvdseulemle.n | ⊢ (𝜑 → 𝑁 ∈ ℕ) |
| pw2dvdseulemle.a | ⊢ (𝜑 → 𝐴 ∈ ℕ0) |
| pw2dvdseulemle.b | ⊢ (𝜑 → 𝐵 ∈ ℕ0) |
| pw2dvdseulemle.2a | ⊢ (𝜑 → (2↑𝐴) ∥ 𝑁) |
| pw2dvdseulemle.n2b | ⊢ (𝜑 → ¬ (2↑(𝐵 + 1)) ∥ 𝑁) |
| Ref | Expression |
|---|---|
| pw2dvdseulemle | ⊢ (𝜑 → 𝐴 ≤ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pw2dvdseulemle.a | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℕ0) | |
| 2 | 1 | nn0red 9559 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| 3 | pw2dvdseulemle.b | . . 3 ⊢ (𝜑 → 𝐵 ∈ ℕ0) | |
| 4 | 3 | nn0red 9559 | . 2 ⊢ (𝜑 → 𝐵 ∈ ℝ) |
| 5 | pw2dvdseulemle.n2b | . . 3 ⊢ (𝜑 → ¬ (2↑(𝐵 + 1)) ∥ 𝑁) | |
| 6 | 2cnd 9315 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → 2 ∈ ℂ) | |
| 7 | 3 | adantr 276 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → 𝐵 ∈ ℕ0) |
| 8 | peano2nn0 9541 | . . . . . . . 8 ⊢ (𝐵 ∈ ℕ0 → (𝐵 + 1) ∈ ℕ0) | |
| 9 | 7, 8 | syl 14 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → (𝐵 + 1) ∈ ℕ0) |
| 10 | 1 | adantr 276 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → 𝐴 ∈ ℕ0) |
| 11 | simpr 110 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → 𝐵 < 𝐴) | |
| 12 | nn0ltp1le 9645 | . . . . . . . . 9 ⊢ ((𝐵 ∈ ℕ0 ∧ 𝐴 ∈ ℕ0) → (𝐵 < 𝐴 ↔ (𝐵 + 1) ≤ 𝐴)) | |
| 13 | 7, 10, 12 | syl2anc 411 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → (𝐵 < 𝐴 ↔ (𝐵 + 1) ≤ 𝐴)) |
| 14 | 11, 13 | mpbid 147 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → (𝐵 + 1) ≤ 𝐴) |
| 15 | nn0sub2 9656 | . . . . . . 7 ⊢ (((𝐵 + 1) ∈ ℕ0 ∧ 𝐴 ∈ ℕ0 ∧ (𝐵 + 1) ≤ 𝐴) → (𝐴 − (𝐵 + 1)) ∈ ℕ0) | |
| 16 | 9, 10, 14, 15 | syl3anc 1274 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → (𝐴 − (𝐵 + 1)) ∈ ℕ0) |
| 17 | 6, 16, 9 | expaddd 11045 | . . . . 5 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → (2↑((𝐵 + 1) + (𝐴 − (𝐵 + 1)))) = ((2↑(𝐵 + 1)) · (2↑(𝐴 − (𝐵 + 1))))) |
| 18 | 9 | nn0cnd 9560 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → (𝐵 + 1) ∈ ℂ) |
| 19 | 10 | nn0cnd 9560 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → 𝐴 ∈ ℂ) |
| 20 | 18, 19 | pncan3d 8592 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → ((𝐵 + 1) + (𝐴 − (𝐵 + 1))) = 𝐴) |
| 21 | 20 | oveq2d 6068 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → (2↑((𝐵 + 1) + (𝐴 − (𝐵 + 1)))) = (2↑𝐴)) |
| 22 | pw2dvdseulemle.2a | . . . . . . 7 ⊢ (𝜑 → (2↑𝐴) ∥ 𝑁) | |
| 23 | 22 | adantr 276 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → (2↑𝐴) ∥ 𝑁) |
| 24 | 21, 23 | eqbrtrd 4133 | . . . . 5 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → (2↑((𝐵 + 1) + (𝐴 − (𝐵 + 1)))) ∥ 𝑁) |
| 25 | 17, 24 | eqbrtrrd 4135 | . . . 4 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → ((2↑(𝐵 + 1)) · (2↑(𝐴 − (𝐵 + 1)))) ∥ 𝑁) |
| 26 | 2nn 9404 | . . . . . . . 8 ⊢ 2 ∈ ℕ | |
| 27 | 26 | a1i 9 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → 2 ∈ ℕ) |
| 28 | 27, 9 | nnexpcld 11065 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → (2↑(𝐵 + 1)) ∈ ℕ) |
| 29 | 28 | nnzd 9705 | . . . . 5 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → (2↑(𝐵 + 1)) ∈ ℤ) |
| 30 | 27, 16 | nnexpcld 11065 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → (2↑(𝐴 − (𝐵 + 1))) ∈ ℕ) |
| 31 | 30 | nnzd 9705 | . . . . 5 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → (2↑(𝐴 − (𝐵 + 1))) ∈ ℤ) |
| 32 | pw2dvdseulemle.n | . . . . . . 7 ⊢ (𝜑 → 𝑁 ∈ ℕ) | |
| 33 | 32 | adantr 276 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → 𝑁 ∈ ℕ) |
| 34 | 33 | nnzd 9705 | . . . . 5 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → 𝑁 ∈ ℤ) |
| 35 | muldvds1 12510 | . . . . 5 ⊢ (((2↑(𝐵 + 1)) ∈ ℤ ∧ (2↑(𝐴 − (𝐵 + 1))) ∈ ℤ ∧ 𝑁 ∈ ℤ) → (((2↑(𝐵 + 1)) · (2↑(𝐴 − (𝐵 + 1)))) ∥ 𝑁 → (2↑(𝐵 + 1)) ∥ 𝑁)) | |
| 36 | 29, 31, 34, 35 | syl3anc 1274 | . . . 4 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → (((2↑(𝐵 + 1)) · (2↑(𝐴 − (𝐵 + 1)))) ∥ 𝑁 → (2↑(𝐵 + 1)) ∥ 𝑁)) |
| 37 | 25, 36 | mpd 13 | . . 3 ⊢ ((𝜑 ∧ 𝐵 < 𝐴) → (2↑(𝐵 + 1)) ∥ 𝑁) |
| 38 | 5, 37 | mtand 671 | . 2 ⊢ (𝜑 → ¬ 𝐵 < 𝐴) |
| 39 | 2, 4, 38 | nltled 8399 | 1 ⊢ (𝜑 → 𝐴 ≤ 𝐵) |
| Colors of variables: wff set class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 104 ↔ wb 105 ∈ wcel 2205 class class class wbr 4111 (class class class)co 6052 1c1 8133 + caddc 8135 · cmul 8137 < clt 8313 ≤ cle 8314 − cmin 8449 ℕcn 9242 2c2 9293 ℕ0cn0 9501 ℤcz 9582 ↑cexp 10907 ∥ cdvds 12481 |
| 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 2207 ax-14 2208 ax-ext 2216 ax-coll 4227 ax-sep 4230 ax-nul 4238 ax-pow 4289 ax-pr 4324 ax-un 4556 ax-setind 4661 ax-iinf 4712 ax-cnex 8223 ax-resscn 8224 ax-1cn 8225 ax-1re 8226 ax-icn 8227 ax-addcl 8228 ax-addrcl 8229 ax-mulcl 8230 ax-mulrcl 8231 ax-addcom 8232 ax-mulcom 8233 ax-addass 8234 ax-mulass 8235 ax-distr 8236 ax-i2m1 8237 ax-0lt1 8238 ax-1rid 8239 ax-0id 8240 ax-rnegex 8241 ax-precex 8242 ax-cnre 8243 ax-pre-ltirr 8244 ax-pre-ltwlin 8245 ax-pre-lttrn 8246 ax-pre-apti 8247 ax-pre-ltadd 8248 ax-pre-mulgt0 8249 ax-pre-mulext 8250 |
| 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 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-nel 2510 df-ral 2527 df-rex 2528 df-reu 2529 df-rmo 2530 df-rab 2531 df-v 2817 df-sbc 3045 df-csb 3141 df-dif 3215 df-un 3217 df-in 3219 df-ss 3226 df-nul 3511 df-if 3623 df-pw 3673 df-sn 3697 df-pr 3698 df-op 3700 df-uni 3917 df-int 3952 df-iun 3995 df-br 4112 df-opab 4174 df-mpt 4175 df-tr 4211 df-id 4416 df-po 4419 df-iso 4420 df-iord 4489 df-on 4491 df-ilim 4492 df-suc 4494 df-iom 4715 df-xp 4757 df-rel 4758 df-cnv 4759 df-co 4760 df-dm 4761 df-rn 4762 df-res 4763 df-ima 4764 df-iota 5314 df-fun 5356 df-fn 5357 df-f 5358 df-f1 5359 df-fo 5360 df-f1o 5361 df-fv 5362 df-riota 6005 df-ov 6055 df-oprab 6056 df-mpo 6057 df-1st 6336 df-2nd 6337 df-recs 6538 df-frec 6624 df-pnf 8315 df-mnf 8316 df-xr 8317 df-ltxr 8318 df-le 8319 df-sub 8451 df-neg 8452 df-reap 8854 df-ap 8861 df-div 8952 df-inn 9243 df-2 9301 df-n0 9502 df-z 9583 df-uz 9860 df-seqfrec 10817 df-exp 10908 df-dvds 12482 |
| This theorem is referenced by: pw2dvdseu 12873 |
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