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Mirrors > Home > MPE Home > Th. List > smndex1igid | Structured version Visualization version GIF version |
Description: The composition of the modulo function 𝐼 and a constant function (𝐺‘𝐾) results in (𝐺‘𝐾) itself. (Contributed by AV, 14-Feb-2024.) |
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 |
---|---|
smndex1igid | ⊢ (𝐾 ∈ (0..^𝑁) → (𝐼 ∘ (𝐺‘𝐾)) = (𝐺‘𝐾)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fconstmpt 5692 | . . . . 5 ⊢ (ℕ0 × {𝐾}) = (𝑥 ∈ ℕ0 ↦ 𝐾) | |
2 | 1 | eqcomi 2745 | . . . 4 ⊢ (𝑥 ∈ ℕ0 ↦ 𝐾) = (ℕ0 × {𝐾}) |
3 | 2 | a1i 11 | . . 3 ⊢ (𝐾 ∈ (0..^𝑁) → (𝑥 ∈ ℕ0 ↦ 𝐾) = (ℕ0 × {𝐾})) |
4 | 3 | coeq2d 5816 | . 2 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐼 ∘ (𝑥 ∈ ℕ0 ↦ 𝐾)) = (𝐼 ∘ (ℕ0 × {𝐾}))) |
5 | simpl 483 | . . . . 5 ⊢ ((𝑛 = 𝐾 ∧ 𝑥 ∈ ℕ0) → 𝑛 = 𝐾) | |
6 | 5 | mpteq2dva 5203 | . . . 4 ⊢ (𝑛 = 𝐾 → (𝑥 ∈ ℕ0 ↦ 𝑛) = (𝑥 ∈ ℕ0 ↦ 𝐾)) |
7 | smndex1ibas.g | . . . 4 ⊢ 𝐺 = (𝑛 ∈ (0..^𝑁) ↦ (𝑥 ∈ ℕ0 ↦ 𝑛)) | |
8 | nn0ex 12377 | . . . . 5 ⊢ ℕ0 ∈ V | |
9 | 8 | mptex 7169 | . . . 4 ⊢ (𝑥 ∈ ℕ0 ↦ 𝐾) ∈ V |
10 | 6, 7, 9 | fvmpt 6945 | . . 3 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐺‘𝐾) = (𝑥 ∈ ℕ0 ↦ 𝐾)) |
11 | 10 | coeq2d 5816 | . 2 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐼 ∘ (𝐺‘𝐾)) = (𝐼 ∘ (𝑥 ∈ ℕ0 ↦ 𝐾))) |
12 | smndex1ibas.i | . . . . . . 7 ⊢ 𝐼 = (𝑥 ∈ ℕ0 ↦ (𝑥 mod 𝑁)) | |
13 | oveq1 7358 | . . . . . . . 8 ⊢ (𝑥 = 𝐾 → (𝑥 mod 𝑁) = (𝐾 mod 𝑁)) | |
14 | zmodidfzoimp 13760 | . . . . . . . 8 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐾 mod 𝑁) = 𝐾) | |
15 | 13, 14 | sylan9eqr 2798 | . . . . . . 7 ⊢ ((𝐾 ∈ (0..^𝑁) ∧ 𝑥 = 𝐾) → (𝑥 mod 𝑁) = 𝐾) |
16 | elfzonn0 13571 | . . . . . . 7 ⊢ (𝐾 ∈ (0..^𝑁) → 𝐾 ∈ ℕ0) | |
17 | 12, 15, 16, 16 | fvmptd2 6953 | . . . . . 6 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐼‘𝐾) = 𝐾) |
18 | 17 | eqcomd 2742 | . . . . 5 ⊢ (𝐾 ∈ (0..^𝑁) → 𝐾 = (𝐼‘𝐾)) |
19 | 18 | sneqd 4596 | . . . 4 ⊢ (𝐾 ∈ (0..^𝑁) → {𝐾} = {(𝐼‘𝐾)}) |
20 | 19 | xpeq2d 5661 | . . 3 ⊢ (𝐾 ∈ (0..^𝑁) → (ℕ0 × {𝐾}) = (ℕ0 × {(𝐼‘𝐾)})) |
21 | 10, 2 | eqtrdi 2792 | . . 3 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐺‘𝐾) = (ℕ0 × {𝐾})) |
22 | ovex 7384 | . . . . 5 ⊢ (𝑥 mod 𝑁) ∈ V | |
23 | 22, 12 | fnmpti 6641 | . . . 4 ⊢ 𝐼 Fn ℕ0 |
24 | fcoconst 7076 | . . . 4 ⊢ ((𝐼 Fn ℕ0 ∧ 𝐾 ∈ ℕ0) → (𝐼 ∘ (ℕ0 × {𝐾})) = (ℕ0 × {(𝐼‘𝐾)})) | |
25 | 23, 16, 24 | sylancr 587 | . . 3 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐼 ∘ (ℕ0 × {𝐾})) = (ℕ0 × {(𝐼‘𝐾)})) |
26 | 20, 21, 25 | 3eqtr4d 2786 | . 2 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐺‘𝐾) = (𝐼 ∘ (ℕ0 × {𝐾}))) |
27 | 4, 11, 26 | 3eqtr4d 2786 | 1 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐼 ∘ (𝐺‘𝐾)) = (𝐺‘𝐾)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2106 {csn 4584 ↦ cmpt 5186 × cxp 5629 ∘ ccom 5635 Fn wfn 6488 ‘cfv 6493 (class class class)co 7351 0cc0 11009 ℕcn 12111 ℕ0cn0 12371 ..^cfzo 13521 mod cmo 13728 EndoFMndcefmnd 18632 |
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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2707 ax-rep 5240 ax-sep 5254 ax-nul 5261 ax-pow 5318 ax-pr 5382 ax-un 7664 ax-cnex 11065 ax-resscn 11066 ax-1cn 11067 ax-icn 11068 ax-addcl 11069 ax-addrcl 11070 ax-mulcl 11071 ax-mulrcl 11072 ax-mulcom 11073 ax-addass 11074 ax-mulass 11075 ax-distr 11076 ax-i2m1 11077 ax-1ne0 11078 ax-1rid 11079 ax-rnegex 11080 ax-rrecex 11081 ax-cnre 11082 ax-pre-lttri 11083 ax-pre-lttrn 11084 ax-pre-ltadd 11085 ax-pre-mulgt0 11086 ax-pre-sup 11087 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2887 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-rmo 3351 df-reu 3352 df-rab 3406 df-v 3445 df-sbc 3738 df-csb 3854 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3927 df-nul 4281 df-if 4485 df-pw 4560 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4864 df-iun 4954 df-br 5104 df-opab 5166 df-mpt 5187 df-tr 5221 df-id 5529 df-eprel 5535 df-po 5543 df-so 5544 df-fr 5586 df-we 5588 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6251 df-ord 6318 df-on 6319 df-lim 6320 df-suc 6321 df-iota 6445 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7307 df-ov 7354 df-oprab 7355 df-mpo 7356 df-om 7795 df-1st 7913 df-2nd 7914 df-frecs 8204 df-wrecs 8235 df-recs 8309 df-rdg 8348 df-er 8606 df-en 8842 df-dom 8843 df-sdom 8844 df-sup 9336 df-inf 9337 df-pnf 11149 df-mnf 11150 df-xr 11151 df-ltxr 11152 df-le 11153 df-sub 11345 df-neg 11346 df-div 11771 df-nn 12112 df-n0 12372 df-z 12458 df-uz 12722 df-rp 12870 df-fz 13379 df-fzo 13522 df-fl 13651 df-mod 13729 |
This theorem is referenced by: smndex1mgm 18671 smndex1mndlem 18673 |
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