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| Mirrors > Home > MPE Home > Th. List > smndex2hbas | Structured version Visualization version GIF version | ||
| Description: The halving functions 𝐻 are endofunctions on ℕ0. (Contributed by AV, 18-Feb-2024.) |
| Ref | Expression |
|---|---|
| smndex2dbas.m | ⊢ 𝑀 = (EndoFMnd‘ℕ0) |
| smndex2dbas.b | ⊢ 𝐵 = (Base‘𝑀) |
| smndex2dbas.0 | ⊢ 0 = (0g‘𝑀) |
| smndex2dbas.d | ⊢ 𝐷 = (𝑥 ∈ ℕ0 ↦ (2 · 𝑥)) |
| smndex2hbas.n | ⊢ 𝑁 ∈ ℕ0 |
| smndex2hbas.h | ⊢ 𝐻 = (𝑥 ∈ ℕ0 ↦ if(2 ∥ 𝑥, (𝑥 / 2), 𝑁)) |
| Ref | Expression |
|---|---|
| smndex2hbas | ⊢ 𝐻 ∈ 𝐵 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | smndex2hbas.h | . . 3 ⊢ 𝐻 = (𝑥 ∈ ℕ0 ↦ if(2 ∥ 𝑥, (𝑥 / 2), 𝑁)) | |
| 2 | nn0ehalf 16554 | . . . 4 ⊢ ((𝑥 ∈ ℕ0 ∧ 2 ∥ 𝑥) → (𝑥 / 2) ∈ ℕ0) | |
| 3 | smndex2hbas.n | . . . . 5 ⊢ 𝑁 ∈ ℕ0 | |
| 4 | 3 | a1i 11 | . . . 4 ⊢ ((𝑥 ∈ ℕ0 ∧ ¬ 2 ∥ 𝑥) → 𝑁 ∈ ℕ0) |
| 5 | 2, 4 | ifclda 4517 | . . 3 ⊢ (𝑥 ∈ ℕ0 → if(2 ∥ 𝑥, (𝑥 / 2), 𝑁) ∈ ℕ0) |
| 6 | 1, 5 | fmpti 7113 | . 2 ⊢ 𝐻:ℕ0⟶ℕ0 |
| 7 | nn0ex 12616 | . . . . 5 ⊢ ℕ0 ∈ V | |
| 8 | 7 | mptex 7230 | . . . 4 ⊢ (𝑥 ∈ ℕ0 ↦ if(2 ∥ 𝑥, (𝑥 / 2), 𝑁)) ∈ V |
| 9 | 1, 8 | eqeltri 2856 | . . 3 ⊢ 𝐻 ∈ V |
| 10 | smndex2dbas.m | . . . 4 ⊢ 𝑀 = (EndoFMnd‘ℕ0) | |
| 11 | smndex2dbas.b | . . . 4 ⊢ 𝐵 = (Base‘𝑀) | |
| 12 | 10, 11 | elefmndbas2 19076 | . . 3 ⊢ (𝐻 ∈ V → (𝐻 ∈ 𝐵 ↔ 𝐻:ℕ0⟶ℕ0)) |
| 13 | 9, 12 | ax-mp 5 | . 2 ⊢ (𝐻 ∈ 𝐵 ↔ 𝐻:ℕ0⟶ℕ0) |
| 14 | 6, 13 | mpbir 234 | 1 ⊢ 𝐻 ∈ 𝐵 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 ↔ wb 209 ∧ wa 401 = wceq 1569 ∈ wcel 2144 Vcvv 3450 ifcif 4481 class class class wbr 5102 ↦ cmpt 5185 ⟶wf 6535 ‘cfv 6539 (class class class)co 7421 · cmul 11209 / cdiv 11977 2c2 12401 ℕ0cn0 12610 ∥ cdvds 16428 Basecbs 17393 0gc0g 17616 EndoFMndcefmnd 19070 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7752 ax-cnex 11260 ax-resscn 11261 ax-1cn 11262 ax-icn 11263 ax-addcl 11264 ax-addrcl 11265 ax-mulcl 11266 ax-mulrcl 11267 ax-mulcom 11268 ax-addass 11269 ax-mulass 11270 ax-distr 11271 ax-i2m1 11272 ax-1ne0 11273 ax-1rid 11274 ax-rnegex 11275 ax-rrecex 11276 ax-cnre 11277 ax-pre-lttri 11278 ax-pre-lttrn 11279 ax-pre-ltadd 11280 ax-pre-mulgt0 11281 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6541 df-fn 6542 df-f 6543 df-f1 6544 df-fo 6545 df-f1o 6546 df-fv 6547 df-riota 7378 df-ov 7424 df-oprab 7425 df-mpo 7426 df-om 7879 df-1st 8002 df-2nd 8003 df-frecs 8303 df-wrecs 8334 df-recs 8383 df-rdg 8422 df-1o 8480 df-er 8721 df-map 8853 df-en 8978 df-dom 8979 df-sdom 8980 df-fin 8981 df-pnf 11349 df-mnf 11350 df-xr 11351 df-ltxr 11352 df-le 11353 df-sub 11547 df-neg 11548 df-div 11978 df-nn 12340 df-2 12409 df-3 12410 df-4 12411 df-5 12412 df-6 12413 df-7 12414 df-8 12415 df-9 12416 df-n0 12611 df-z 12698 df-uz 12970 df-rp 13125 df-fz 13644 df-dvds 16429 df-struct 17331 df-slot 17366 df-ndx 17378 df-base 17394 df-plusg 17447 df-tset 17453 df-efmnd 19071 |
| This theorem is used by: (None) |
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