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| Mirrors > Home > ILE Home > Th. List > bitsf | GIF version | ||
| Description: The bits function is a function from integers to subsets of nonnegative integers. (Contributed by Mario Carneiro, 5-Sep-2016.) |
| Ref | Expression |
|---|---|
| bitsf | ⊢ bits:ℤ⟶𝒫 ℕ0 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-bits 12473 | . 2 ⊢ bits = (𝑛 ∈ ℤ ↦ {𝑘 ∈ ℕ0 ∣ ¬ 2 ∥ (⌊‘(𝑛 / (2↑𝑘)))}) | |
| 2 | nn0ex 9391 | . . . 4 ⊢ ℕ0 ∈ V | |
| 3 | ssrab2 3309 | . . . 4 ⊢ {𝑘 ∈ ℕ0 ∣ ¬ 2 ∥ (⌊‘(𝑛 / (2↑𝑘)))} ⊆ ℕ0 | |
| 4 | 2, 3 | elpwi2 4243 | . . 3 ⊢ {𝑘 ∈ ℕ0 ∣ ¬ 2 ∥ (⌊‘(𝑛 / (2↑𝑘)))} ∈ 𝒫 ℕ0 |
| 5 | 4 | a1i 9 | . 2 ⊢ (𝑛 ∈ ℤ → {𝑘 ∈ ℕ0 ∣ ¬ 2 ∥ (⌊‘(𝑛 / (2↑𝑘)))} ∈ 𝒫 ℕ0) |
| 6 | 1, 5 | fmpti 5792 | 1 ⊢ bits:ℤ⟶𝒫 ℕ0 |
| Colors of variables: wff set class |
| Syntax hints: ¬ wn 3 ∈ wcel 2200 {crab 2512 Vcvv 2799 𝒫 cpw 3649 class class class wbr 4083 ⟶wf 5317 ‘cfv 5321 (class class class)co 6010 / cdiv 8835 2c2 9177 ℕ0cn0 9385 ℤcz 9462 ⌊cfl 10505 ↑cexp 10777 ∥ cdvds 12319 bitscbits 12472 |
| 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-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4202 ax-pow 4259 ax-pr 4294 ax-un 4525 ax-cnex 8106 ax-resscn 8107 ax-1cn 8108 ax-1re 8109 ax-icn 8110 ax-addcl 8111 ax-addrcl 8112 ax-mulcl 8113 ax-i2m1 8120 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-rab 2517 df-v 2801 df-sbc 3029 df-un 3201 df-in 3203 df-ss 3210 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-int 3924 df-br 4084 df-opab 4146 df-mpt 4147 df-id 4385 df-xp 4726 df-rel 4727 df-cnv 4728 df-co 4729 df-dm 4730 df-rn 4731 df-res 4732 df-ima 4733 df-iota 5281 df-fun 5323 df-fn 5324 df-f 5325 df-fv 5329 df-inn 9127 df-n0 9386 df-bits 12473 |
| This theorem is referenced by: (None) |
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