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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 16589 | . . . 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 4521 | . . 3 ⊢ (𝑥 ∈ ℕ0 → if(2 ∥ 𝑥, (𝑥 / 2), 𝑁) ∈ ℕ0) |
| 6 | 1, 5 | fmpti 7142 | . 2 ⊢ 𝐻:ℕ0⟶ℕ0 |
| 7 | nn0ex 12650 | . . . . 5 ⊢ ℕ0 ∈ V | |
| 8 | 7 | mptex 7258 | . . . 4 ⊢ (𝑥 ∈ ℕ0 ↦ if(2 ∥ 𝑥, (𝑥 / 2), 𝑁)) ∈ V |
| 9 | 1, 8 | eqeltri 2860 | . . 3 ⊢ 𝐻 ∈ V |
| 10 | smndex2dbas.m | . . . 4 ⊢ 𝑀 = (EndoFMnd‘ℕ0) | |
| 11 | smndex2dbas.b | . . . 4 ⊢ 𝐵 = (Base‘𝑀) | |
| 12 | 10, 11 | elefmndbas2 19111 | . . 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 1570 ∈ wcel 2147 Vcvv 3454 ifcif 4485 class class class wbr 5106 ↦ cmpt 5190 ⟶wf 6560 ‘cfv 6564 (class class class)co 7449 · cmul 11242 / cdiv 12011 2c2 12435 ℕ0cn0 12644 ∥ cdvds 16463 Basecbs 17428 0gc0g 17651 EndoFMndcefmnd 19105 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5236 ax-sep 5253 ax-nul 5264 ax-pow 5332 ax-pr 5396 ax-un 7781 ax-cnex 11293 ax-resscn 11294 ax-1cn 11295 ax-icn 11296 ax-addcl 11297 ax-addrcl 11298 ax-mulcl 11299 ax-mulrcl 11300 ax-mulcom 11301 ax-addass 11302 ax-mulass 11303 ax-distr 11304 ax-i2m1 11305 ax-1ne0 11306 ax-1rid 11307 ax-rnegex 11308 ax-rrecex 11309 ax-cnre 11310 ax-pre-lttri 11311 ax-pre-lttrn 11312 ax-pre-ltadd 11313 ax-pre-mulgt0 11314 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-tp 4593 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5551 df-eprel 5556 df-po 5564 df-so 5565 df-fr 5609 df-we 5611 df-xp 5662 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-rn 5667 df-res 5668 df-ima 5669 df-pred 6328 df-ord 6389 df-on 6390 df-lim 6391 df-suc 6392 df-iota 6518 df-fun 6566 df-fn 6567 df-f 6568 df-f1 6569 df-fo 6570 df-f1o 6571 df-fv 6572 df-riota 7406 df-ov 7452 df-oprab 7453 df-mpo 7454 df-om 7910 df-1st 8033 df-2nd 8034 df-frecs 8335 df-wrecs 8366 df-recs 8415 df-rdg 8454 df-1o 8512 df-er 8753 df-map 8885 df-en 9010 df-dom 9011 df-sdom 9012 df-fin 9013 df-pnf 11382 df-mnf 11383 df-xr 11384 df-ltxr 11385 df-le 11386 df-sub 11580 df-neg 11581 df-div 12012 df-nn 12374 df-2 12443 df-3 12444 df-4 12445 df-5 12446 df-6 12447 df-7 12448 df-8 12449 df-9 12450 df-n0 12645 df-z 12732 df-uz 13004 df-rp 13159 df-fz 13678 df-dvds 16464 df-struct 17366 df-slot 17401 df-ndx 17413 df-base 17429 df-plusg 17482 df-tset 17488 df-efmnd 19106 |
| This theorem is used by: (None) |
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