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| Mirrors > Home > MPE Home > Th. List > bits0o | Structured version Visualization version GIF version | ||
| Description: The zeroth bit of an odd number is one. (Contributed by Mario Carneiro, 5-Sep-2016.) |
| Ref | Expression |
|---|---|
| bits0o | ⊢ (𝑁 ∈ ℤ → 0 ∈ (bits‘((2 · 𝑁) + 1))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2z 12600 | . . . 4 ⊢ 2 ∈ ℤ | |
| 2 | dvdsmul1 16294 | . . . 4 ⊢ ((2 ∈ ℤ ∧ 𝑁 ∈ ℤ) → 2 ∥ (2 · 𝑁)) | |
| 3 | 1, 2 | mpan 700 | . . 3 ⊢ (𝑁 ∈ ℤ → 2 ∥ (2 · 𝑁)) |
| 4 | 1 | a1i 11 | . . . . 5 ⊢ (𝑁 ∈ ℤ → 2 ∈ ℤ) |
| 5 | id 22 | . . . . 5 ⊢ (𝑁 ∈ ℤ → 𝑁 ∈ ℤ) | |
| 6 | 4, 5 | zmulcld 12680 | . . . 4 ⊢ (𝑁 ∈ ℤ → (2 · 𝑁) ∈ ℤ) |
| 7 | 2nn 12288 | . . . . 5 ⊢ 2 ∈ ℕ | |
| 8 | 7 | a1i 11 | . . . 4 ⊢ (𝑁 ∈ ℤ → 2 ∈ ℕ) |
| 9 | 1lt2 12387 | . . . . 5 ⊢ 1 < 2 | |
| 10 | 9 | a1i 11 | . . . 4 ⊢ (𝑁 ∈ ℤ → 1 < 2) |
| 11 | ndvdsp1 16428 | . . . 4 ⊢ (((2 · 𝑁) ∈ ℤ ∧ 2 ∈ ℕ ∧ 1 < 2) → (2 ∥ (2 · 𝑁) → ¬ 2 ∥ ((2 · 𝑁) + 1))) | |
| 12 | 6, 8, 10, 11 | syl3anc 1389 | . . 3 ⊢ (𝑁 ∈ ℤ → (2 ∥ (2 · 𝑁) → ¬ 2 ∥ ((2 · 𝑁) + 1))) |
| 13 | 3, 12 | mpd 15 | . 2 ⊢ (𝑁 ∈ ℤ → ¬ 2 ∥ ((2 · 𝑁) + 1)) |
| 14 | 6 | peano2zd 12677 | . . 3 ⊢ (𝑁 ∈ ℤ → ((2 · 𝑁) + 1) ∈ ℤ) |
| 15 | bits0 16445 | . . 3 ⊢ (((2 · 𝑁) + 1) ∈ ℤ → (0 ∈ (bits‘((2 · 𝑁) + 1)) ↔ ¬ 2 ∥ ((2 · 𝑁) + 1))) | |
| 16 | 14, 15 | syl 17 | . 2 ⊢ (𝑁 ∈ ℤ → (0 ∈ (bits‘((2 · 𝑁) + 1)) ↔ ¬ 2 ∥ ((2 · 𝑁) + 1))) |
| 17 | 13, 16 | mpbird 259 | 1 ⊢ (𝑁 ∈ ℤ → 0 ∈ (bits‘((2 · 𝑁) + 1))) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 208 ∈ wcel 2141 class class class wbr 5099 ‘cfv 6517 (class class class)co 7392 0cc0 11070 1c1 11071 + caddc 11073 · cmul 11075 < clt 11213 ℕcn 12207 2c2 12269 ℤcz 12565 ∥ cdvds 16269 bitscbits 16436 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5245 ax-nul 5255 ax-pow 5321 ax-pr 5389 ax-un 7714 ax-cnex 11126 ax-resscn 11127 ax-1cn 11128 ax-icn 11129 ax-addcl 11130 ax-addrcl 11131 ax-mulcl 11132 ax-mulrcl 11133 ax-mulcom 11134 ax-addass 11135 ax-mulass 11136 ax-distr 11137 ax-i2m1 11138 ax-1ne0 11139 ax-1rid 11140 ax-rnegex 11141 ax-rrecex 11142 ax-cnre 11143 ax-pre-lttri 11144 ax-pre-lttrn 11145 ax-pre-ltadd 11146 ax-pre-mulgt0 11147 ax-pre-sup 11148 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3061 df-ral 3076 df-rex 3086 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-iun 4950 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5540 df-eprel 5545 df-po 5553 df-so 5554 df-fr 5598 df-we 5600 df-xp 5651 df-rel 5652 df-cnv 5653 df-co 5654 df-dm 5655 df-rn 5656 df-res 5657 df-ima 5658 df-pred 6284 df-ord 6345 df-on 6346 df-lim 6347 df-suc 6348 df-iota 6473 df-fun 6519 df-fn 6520 df-f 6521 df-f1 6522 df-fo 6523 df-f1o 6524 df-fv 6525 df-riota 7349 df-ov 7395 df-oprab 7396 df-mpo 7397 df-om 7843 df-1st 7966 df-2nd 7967 df-frecs 8257 df-wrecs 8288 df-recs 8337 df-rdg 8376 df-er 8673 df-en 8924 df-dom 8925 df-sdom 8926 df-sup 9385 df-inf 9386 df-pnf 11215 df-mnf 11216 df-xr 11217 df-ltxr 11218 df-le 11219 df-sub 11413 df-neg 11414 df-div 11842 df-nn 12208 df-2 12277 df-3 12278 df-n0 12479 df-z 12566 df-uz 12837 df-rp 12991 df-fz 13510 df-fl 13799 df-seq 14012 df-exp 14072 df-cj 15109 df-re 15110 df-im 15111 df-sqrt 15245 df-abs 15246 df-dvds 16270 df-bits 16439 |
| This theorem is referenced by: (None) |
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