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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.) |
| 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 | smndex1ibas.g | . . . . . . . 8 ⊢ 𝐺 = (𝑛 ∈ (0..^𝑁) ↦ (𝑥 ∈ ℕ0 ↦ 𝑛)) | |
| 2 | 1 | a1i 11 | . . . . . . 7 ⊢ (𝐾 ∈ (0..^𝑁) → 𝐺 = (𝑛 ∈ (0..^𝑁) ↦ (𝑥 ∈ ℕ0 ↦ 𝑛))) |
| 3 | id 22 | . . . . . . . . 9 ⊢ (𝑛 = 𝐾 → 𝑛 = 𝐾) | |
| 4 | 3 | mpteq2dv 5194 | . . . . . . . 8 ⊢ (𝑛 = 𝐾 → (𝑥 ∈ ℕ0 ↦ 𝑛) = (𝑥 ∈ ℕ0 ↦ 𝐾)) |
| 5 | 4 | adantl 481 | . . . . . . 7 ⊢ ((𝐾 ∈ (0..^𝑁) ∧ 𝑛 = 𝐾) → (𝑥 ∈ ℕ0 ↦ 𝑛) = (𝑥 ∈ ℕ0 ↦ 𝐾)) |
| 6 | id 22 | . . . . . . 7 ⊢ (𝐾 ∈ (0..^𝑁) → 𝐾 ∈ (0..^𝑁)) | |
| 7 | nn0ex 12419 | . . . . . . . . 9 ⊢ ℕ0 ∈ V | |
| 8 | 7 | mptex 7179 | . . . . . . . 8 ⊢ (𝑥 ∈ ℕ0 ↦ 𝐾) ∈ V |
| 9 | 8 | a1i 11 | . . . . . . 7 ⊢ (𝐾 ∈ (0..^𝑁) → (𝑥 ∈ ℕ0 ↦ 𝐾) ∈ V) |
| 10 | 2, 5, 6, 9 | fvmptd 6957 | . . . . . 6 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐺‘𝐾) = (𝑥 ∈ ℕ0 ↦ 𝐾)) |
| 11 | 10 | adantl 481 | . . . . 5 ⊢ ((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) → (𝐺‘𝐾) = (𝑥 ∈ ℕ0 ↦ 𝐾)) |
| 12 | 11 | adantr 480 | . . . 4 ⊢ (((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) ∧ 𝑦 ∈ ℕ0) → (𝐺‘𝐾) = (𝑥 ∈ ℕ0 ↦ 𝐾)) |
| 13 | eqidd 2738 | . . . 4 ⊢ ((((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) ∧ 𝑦 ∈ ℕ0) ∧ 𝑥 = (𝐹‘𝑦)) → 𝐾 = 𝐾) | |
| 14 | smndex1ibas.m | . . . . . . . 8 ⊢ 𝑀 = (EndoFMnd‘ℕ0) | |
| 15 | eqid 2737 | . . . . . . . 8 ⊢ (Base‘𝑀) = (Base‘𝑀) | |
| 16 | 14, 15 | efmndbasf 18812 | . . . . . . 7 ⊢ (𝐹 ∈ (Base‘𝑀) → 𝐹:ℕ0⟶ℕ0) |
| 17 | ffvelcdm 7035 | . . . . . . . 8 ⊢ ((𝐹:ℕ0⟶ℕ0 ∧ 𝑦 ∈ ℕ0) → (𝐹‘𝑦) ∈ ℕ0) | |
| 18 | 17 | ex 412 | . . . . . . 7 ⊢ (𝐹:ℕ0⟶ℕ0 → (𝑦 ∈ ℕ0 → (𝐹‘𝑦) ∈ ℕ0)) |
| 19 | 16, 18 | syl 17 | . . . . . 6 ⊢ (𝐹 ∈ (Base‘𝑀) → (𝑦 ∈ ℕ0 → (𝐹‘𝑦) ∈ ℕ0)) |
| 20 | 19 | adantr 480 | . . . . 5 ⊢ ((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) → (𝑦 ∈ ℕ0 → (𝐹‘𝑦) ∈ ℕ0)) |
| 21 | 20 | imp 406 | . . . 4 ⊢ (((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) ∧ 𝑦 ∈ ℕ0) → (𝐹‘𝑦) ∈ ℕ0) |
| 22 | simplr 769 | . . . 4 ⊢ (((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) ∧ 𝑦 ∈ ℕ0) → 𝐾 ∈ (0..^𝑁)) | |
| 23 | 12, 13, 21, 22 | fvmptd 6957 | . . 3 ⊢ (((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) ∧ 𝑦 ∈ ℕ0) → ((𝐺‘𝐾)‘(𝐹‘𝑦)) = 𝐾) |
| 24 | 23 | mpteq2dva 5193 | . 2 ⊢ ((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) → (𝑦 ∈ ℕ0 ↦ ((𝐺‘𝐾)‘(𝐹‘𝑦))) = (𝑦 ∈ ℕ0 ↦ 𝐾)) |
| 25 | smndex1ibas.n | . . . . 5 ⊢ 𝑁 ∈ ℕ | |
| 26 | smndex1ibas.i | . . . . 5 ⊢ 𝐼 = (𝑥 ∈ ℕ0 ↦ (𝑥 mod 𝑁)) | |
| 27 | 14, 25, 26, 1 | smndex1gbas 18839 | . . . 4 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐺‘𝐾) ∈ (Base‘𝑀)) |
| 28 | 14, 15 | efmndbasf 18812 | . . . 4 ⊢ ((𝐺‘𝐾) ∈ (Base‘𝑀) → (𝐺‘𝐾):ℕ0⟶ℕ0) |
| 29 | 27, 28 | syl 17 | . . 3 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐺‘𝐾):ℕ0⟶ℕ0) |
| 30 | fcompt 7088 | . . 3 ⊢ (((𝐺‘𝐾):ℕ0⟶ℕ0 ∧ 𝐹:ℕ0⟶ℕ0) → ((𝐺‘𝐾) ∘ 𝐹) = (𝑦 ∈ ℕ0 ↦ ((𝐺‘𝐾)‘(𝐹‘𝑦)))) | |
| 31 | 29, 16, 30 | syl2anr 598 | . 2 ⊢ ((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) → ((𝐺‘𝐾) ∘ 𝐹) = (𝑦 ∈ ℕ0 ↦ ((𝐺‘𝐾)‘(𝐹‘𝑦)))) |
| 32 | eqidd 2738 | . . . . . . 7 ⊢ (𝑥 = 𝑦 → 𝐾 = 𝐾) | |
| 33 | 32 | cbvmptv 5204 | . . . . . 6 ⊢ (𝑥 ∈ ℕ0 ↦ 𝐾) = (𝑦 ∈ ℕ0 ↦ 𝐾) |
| 34 | 4, 33 | eqtrdi 2788 | . . . . 5 ⊢ (𝑛 = 𝐾 → (𝑥 ∈ ℕ0 ↦ 𝑛) = (𝑦 ∈ ℕ0 ↦ 𝐾)) |
| 35 | 34 | adantl 481 | . . . 4 ⊢ ((𝐾 ∈ (0..^𝑁) ∧ 𝑛 = 𝐾) → (𝑥 ∈ ℕ0 ↦ 𝑛) = (𝑦 ∈ ℕ0 ↦ 𝐾)) |
| 36 | 7 | mptex 7179 | . . . . 5 ⊢ (𝑦 ∈ ℕ0 ↦ 𝐾) ∈ V |
| 37 | 36 | a1i 11 | . . . 4 ⊢ (𝐾 ∈ (0..^𝑁) → (𝑦 ∈ ℕ0 ↦ 𝐾) ∈ V) |
| 38 | 2, 35, 6, 37 | fvmptd 6957 | . . 3 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐺‘𝐾) = (𝑦 ∈ ℕ0 ↦ 𝐾)) |
| 39 | 38 | adantl 481 | . 2 ⊢ ((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) → (𝐺‘𝐾) = (𝑦 ∈ ℕ0 ↦ 𝐾)) |
| 40 | 24, 31, 39 | 3eqtr4d 2782 | 1 ⊢ ((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) → ((𝐺‘𝐾) ∘ 𝐹) = (𝐺‘𝐾)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 Vcvv 3442 ↦ cmpt 5181 ∘ ccom 5636 ⟶wf 6496 ‘cfv 6500 (class class class)co 7368 0cc0 11038 ℕcn 12157 ℕ0cn0 12413 ..^cfzo 13582 mod cmo 13801 Basecbs 17148 EndoFMndcefmnd 18805 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5226 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-tp 4587 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6267 df-ord 6328 df-on 6329 df-lim 6330 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-riota 7325 df-ov 7371 df-oprab 7372 df-mpo 7373 df-om 7819 df-1st 7943 df-2nd 7944 df-frecs 8233 df-wrecs 8264 df-recs 8313 df-rdg 8351 df-1o 8407 df-er 8645 df-map 8777 df-en 8896 df-dom 8897 df-sdom 8898 df-fin 8899 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 df-sub 11378 df-neg 11379 df-nn 12158 df-2 12220 df-3 12221 df-4 12222 df-5 12223 df-6 12224 df-7 12225 df-8 12226 df-9 12227 df-n0 12414 df-z 12501 df-uz 12764 df-fz 13436 df-fzo 13583 df-struct 17086 df-slot 17121 df-ndx 17133 df-base 17149 df-plusg 17202 df-tset 17208 df-efmnd 18806 |
| This theorem is referenced by: smndex1mgm 18844 smndex1mndlem 18846 |
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