| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > bitsfval | Structured version Visualization version GIF version | ||
| Description: Expand the definition of the bits of an integer. (Contributed by Mario Carneiro, 5-Sep-2016.) |
| Ref | Expression |
|---|---|
| bitsfval | ⊢ (𝑁 ∈ ℤ → (bits‘𝑁) = {𝑚 ∈ ℕ0 ∣ ¬ 2 ∥ (⌊‘(𝑁 / (2↑𝑚)))}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fvoveq1 7383 | . . . . 5 ⊢ (𝑛 = 𝑁 → (⌊‘(𝑛 / (2↑𝑚))) = (⌊‘(𝑁 / (2↑𝑚)))) | |
| 2 | 1 | breq2d 5111 | . . . 4 ⊢ (𝑛 = 𝑁 → (2 ∥ (⌊‘(𝑛 / (2↑𝑚))) ↔ 2 ∥ (⌊‘(𝑁 / (2↑𝑚))))) |
| 3 | 2 | notbid 318 | . . 3 ⊢ (𝑛 = 𝑁 → (¬ 2 ∥ (⌊‘(𝑛 / (2↑𝑚))) ↔ ¬ 2 ∥ (⌊‘(𝑁 / (2↑𝑚))))) |
| 4 | 3 | rabbidv 3407 | . 2 ⊢ (𝑛 = 𝑁 → {𝑚 ∈ ℕ0 ∣ ¬ 2 ∥ (⌊‘(𝑛 / (2↑𝑚)))} = {𝑚 ∈ ℕ0 ∣ ¬ 2 ∥ (⌊‘(𝑁 / (2↑𝑚)))}) |
| 5 | df-bits 16353 | . 2 ⊢ bits = (𝑛 ∈ ℤ ↦ {𝑚 ∈ ℕ0 ∣ ¬ 2 ∥ (⌊‘(𝑛 / (2↑𝑚)))}) | |
| 6 | nn0ex 12411 | . . 3 ⊢ ℕ0 ∈ V | |
| 7 | 6 | rabex 5285 | . 2 ⊢ {𝑚 ∈ ℕ0 ∣ ¬ 2 ∥ (⌊‘(𝑁 / (2↑𝑚)))} ∈ V |
| 8 | 4, 5, 7 | fvmpt 6942 | 1 ⊢ (𝑁 ∈ ℤ → (bits‘𝑁) = {𝑚 ∈ ℕ0 ∣ ¬ 2 ∥ (⌊‘(𝑁 / (2↑𝑚)))}) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 = wceq 1542 ∈ wcel 2114 {crab 3400 class class class wbr 5099 ‘cfv 6493 (class class class)co 7360 / cdiv 11798 2c2 12204 ℕ0cn0 12405 ℤcz 12492 ⌊cfl 13714 ↑cexp 13988 ∥ cdvds 16183 bitscbits 16350 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5242 ax-nul 5252 ax-pr 5378 ax-un 7682 ax-cnex 11086 ax-1cn 11088 ax-addcl 11090 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3062 df-reu 3352 df-rab 3401 df-v 3443 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4287 df-if 4481 df-pw 4557 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-iun 4949 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6260 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-ov 7363 df-om 7811 df-2nd 7936 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-nn 12150 df-n0 12406 df-bits 16353 |
| This theorem is referenced by: bitsval 16355 |
| Copyright terms: Public domain | W3C validator |