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| Mirrors > Home > MPE Home > Th. List > smndex1gid | Structured version Visualization version GIF version | ||
| Description: The composition of a constant function (𝐺‘𝐾) with another endofunction on ℕ0 results in (𝐺‘𝐾) itself. (Contributed by AV, 14-Feb-2024.) Avoid ax-rep 5232. (Revised by GG, 2-Apr-2026.) |
| Ref | Expression |
|---|---|
| smndex1ibas.m | ⊢ 𝑀 = (EndoFMnd‘ℕ0) |
| smndex1ibas.n | ⊢ 𝑁 ∈ ℕ |
| smndex1ibas.i | ⊢ 𝐼 = (𝑥 ∈ ℕ0 ↦ (𝑥 mod 𝑁)) |
| smndex1ibas.g | ⊢ 𝐺 = (𝑛 ∈ (0..^𝑁) ↦ (𝑥 ∈ ℕ0 ↦ 𝑛)) |
| Ref | Expression |
|---|---|
| smndex1gid | ⊢ ((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) → ((𝐺‘𝐾) ∘ 𝐹) = (𝐺‘𝐾)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | id 23 | . . . . . . . 8 ⊢ (𝑛 = 𝐾 → 𝑛 = 𝐾) | |
| 2 | 1 | mpteq2dv 5199 | . . . . . . 7 ⊢ (𝑛 = 𝐾 → (𝑥 ∈ ℕ0 ↦ 𝑛) = (𝑥 ∈ ℕ0 ↦ 𝐾)) |
| 3 | smndex1ibas.g | . . . . . . 7 ⊢ 𝐺 = (𝑛 ∈ (0..^𝑁) ↦ (𝑥 ∈ ℕ0 ↦ 𝑛)) | |
| 4 | fconstmpt 5717 | . . . . . . . 8 ⊢ (ℕ0 × {𝐾}) = (𝑥 ∈ ℕ0 ↦ 𝐾) | |
| 5 | nn0ex 12537 | . . . . . . . . 9 ⊢ ℕ0 ∈ V | |
| 6 | snex 5404 | . . . . . . . . 9 ⊢ {𝐾} ∈ V | |
| 7 | 5, 6 | xpex 7753 | . . . . . . . 8 ⊢ (ℕ0 × {𝐾}) ∈ V |
| 8 | 4, 7 | eqeltrri 2857 | . . . . . . 7 ⊢ (𝑥 ∈ ℕ0 ↦ 𝐾) ∈ V |
| 9 | 2, 3, 8 | fvmpt 6987 | . . . . . 6 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐺‘𝐾) = (𝑥 ∈ ℕ0 ↦ 𝐾)) |
| 10 | 9 | adantl 487 | . . . . 5 ⊢ ((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) → (𝐺‘𝐾) = (𝑥 ∈ ℕ0 ↦ 𝐾)) |
| 11 | 10 | adantr 486 | . . . 4 ⊢ (((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) ∧ 𝑦 ∈ ℕ0) → (𝐺‘𝐾) = (𝑥 ∈ ℕ0 ↦ 𝐾)) |
| 12 | eqidd 2761 | . . . 4 ⊢ ((((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) ∧ 𝑦 ∈ ℕ0) ∧ 𝑥 = (𝐹‘𝑦)) → 𝐾 = 𝐾) | |
| 13 | smndex1ibas.m | . . . . . . . 8 ⊢ 𝑀 = (EndoFMnd‘ℕ0) | |
| 14 | eqid 2760 | . . . . . . . 8 ⊢ (Base‘𝑀) = (Base‘𝑀) | |
| 15 | 13, 14 | efmndbasf 18987 | . . . . . . 7 ⊢ (𝐹 ∈ (Base‘𝑀) → 𝐹:ℕ0⟶ℕ0) |
| 16 | ffvelcdm 7075 | . . . . . . . 8 ⊢ ((𝐹:ℕ0⟶ℕ0 ∧ 𝑦 ∈ ℕ0) → (𝐹‘𝑦) ∈ ℕ0) | |
| 17 | 16 | ex 418 | . . . . . . 7 ⊢ (𝐹:ℕ0⟶ℕ0 → (𝑦 ∈ ℕ0 → (𝐹‘𝑦) ∈ ℕ0)) |
| 18 | 15, 17 | syl 18 | . . . . . 6 ⊢ (𝐹 ∈ (Base‘𝑀) → (𝑦 ∈ ℕ0 → (𝐹‘𝑦) ∈ ℕ0)) |
| 19 | 18 | adantr 486 | . . . . 5 ⊢ ((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) → (𝑦 ∈ ℕ0 → (𝐹‘𝑦) ∈ ℕ0)) |
| 20 | 19 | imp 412 | . . . 4 ⊢ (((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) ∧ 𝑦 ∈ ℕ0) → (𝐹‘𝑦) ∈ ℕ0) |
| 21 | simplr 781 | . . . 4 ⊢ (((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) ∧ 𝑦 ∈ ℕ0) → 𝐾 ∈ (0..^𝑁)) | |
| 22 | 11, 12, 20, 21 | fvmptd 6995 | . . 3 ⊢ (((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) ∧ 𝑦 ∈ ℕ0) → ((𝐺‘𝐾)‘(𝐹‘𝑦)) = 𝐾) |
| 23 | 22 | mpteq2dva 5198 | . 2 ⊢ ((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) → (𝑦 ∈ ℕ0 ↦ ((𝐺‘𝐾)‘(𝐹‘𝑦))) = (𝑦 ∈ ℕ0 ↦ 𝐾)) |
| 24 | smndex1ibas.n | . . . . 5 ⊢ 𝑁 ∈ ℕ | |
| 25 | smndex1ibas.i | . . . . 5 ⊢ 𝐼 = (𝑥 ∈ ℕ0 ↦ (𝑥 mod 𝑁)) | |
| 26 | 13, 24, 25, 3 | smndex1gbas 19014 | . . . 4 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐺‘𝐾) ∈ (Base‘𝑀)) |
| 27 | 13, 14 | efmndbasf 18987 | . . . 4 ⊢ ((𝐺‘𝐾) ∈ (Base‘𝑀) → (𝐺‘𝐾):ℕ0⟶ℕ0) |
| 28 | 26, 27 | syl 18 | . . 3 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐺‘𝐾):ℕ0⟶ℕ0) |
| 29 | fcompt 7128 | . . 3 ⊢ (((𝐺‘𝐾):ℕ0⟶ℕ0 ∧ 𝐹:ℕ0⟶ℕ0) → ((𝐺‘𝐾) ∘ 𝐹) = (𝑦 ∈ ℕ0 ↦ ((𝐺‘𝐾)‘(𝐹‘𝑦)))) | |
| 30 | 28, 15, 29 | syl2anr 609 | . 2 ⊢ ((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) → ((𝐺‘𝐾) ∘ 𝐹) = (𝑦 ∈ ℕ0 ↦ ((𝐺‘𝐾)‘(𝐹‘𝑦)))) |
| 31 | eqidd 2761 | . . . . . 6 ⊢ (𝑥 = 𝑦 → 𝐾 = 𝐾) | |
| 32 | 31 | cbvmptv 5209 | . . . . 5 ⊢ (𝑥 ∈ ℕ0 ↦ 𝐾) = (𝑦 ∈ ℕ0 ↦ 𝐾) |
| 33 | 2, 32 | eqtrdi 2811 | . . . 4 ⊢ (𝑛 = 𝐾 → (𝑥 ∈ ℕ0 ↦ 𝑛) = (𝑦 ∈ ℕ0 ↦ 𝐾)) |
| 34 | fconstmpt 5717 | . . . . 5 ⊢ (ℕ0 × {𝐾}) = (𝑦 ∈ ℕ0 ↦ 𝐾) | |
| 35 | 34, 7 | eqeltrri 2857 | . . . 4 ⊢ (𝑦 ∈ ℕ0 ↦ 𝐾) ∈ V |
| 36 | 33, 3, 35 | fvmpt 6987 | . . 3 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐺‘𝐾) = (𝑦 ∈ ℕ0 ↦ 𝐾)) |
| 37 | 36 | adantl 487 | . 2 ⊢ ((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) → (𝐺‘𝐾) = (𝑦 ∈ ℕ0 ↦ 𝐾)) |
| 38 | 23, 30, 37 | 3eqtr4d 2805 | 1 ⊢ ((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) → ((𝐺‘𝐾) ∘ 𝐹) = (𝐺‘𝐾)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2145 Vcvv 3450 {csn 4584 ↦ cmpt 5186 × cxp 5653 ∘ ccom 5659 ⟶wf 6529 ‘cfv 6533 (class class class)co 7414 0cc0 11127 ℕcn 12260 ℕ0cn0 12531 ..^cfzo 13712 mod cmo 13933 Basecbs 17304 EndoFMndcefmnd 18980 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7737 ax-cnex 11183 ax-resscn 11184 ax-1cn 11185 ax-icn 11186 ax-addcl 11187 ax-addrcl 11188 ax-mulcl 11189 ax-mulrcl 11190 ax-mulcom 11191 ax-addass 11192 ax-mulass 11193 ax-distr 11194 ax-i2m1 11195 ax-1ne0 11196 ax-1rid 11197 ax-rnegex 11198 ax-rrecex 11199 ax-cnre 11200 ax-pre-lttri 11201 ax-pre-lttrn 11202 ax-pre-ltadd 11203 ax-pre-mulgt0 11204 |
| 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 2100 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-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6299 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-riota 7371 df-ov 7417 df-oprab 7418 df-mpo 7419 df-om 7864 df-1st 7987 df-2nd 7988 df-frecs 8281 df-wrecs 8312 df-recs 8361 df-rdg 8400 df-1o 8458 df-er 8699 df-map 8831 df-en 8956 df-dom 8957 df-sdom 8958 df-fin 8959 df-pnf 11272 df-mnf 11273 df-xr 11274 df-ltxr 11275 df-le 11276 df-sub 11470 df-neg 11471 df-nn 12261 df-2 12330 df-3 12331 df-4 12332 df-5 12333 df-6 12334 df-7 12335 df-8 12336 df-9 12337 df-n0 12532 df-z 12619 df-uz 12891 df-fz 13565 df-fzo 13713 df-struct 17242 df-slot 17277 df-ndx 17289 df-base 17305 df-plusg 17358 df-tset 17364 df-efmnd 18981 |
| This theorem is used by: smndex1mgm 19022 smndex1mndlem 19024 |
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