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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 5236. (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 5203 | . . . . . . 7 ⊢ (𝑛 = 𝐾 → (𝑥 ∈ ℕ0 ↦ 𝑛) = (𝑥 ∈ ℕ0 ↦ 𝐾)) |
| 3 | smndex1ibas.g | . . . . . . 7 ⊢ 𝐺 = (𝑛 ∈ (0..^𝑁) ↦ (𝑥 ∈ ℕ0 ↦ 𝑛)) | |
| 4 | fconstmpt 5721 | . . . . . . . 8 ⊢ (ℕ0 × {𝐾}) = (𝑥 ∈ ℕ0 ↦ 𝐾) | |
| 5 | nn0ex 12538 | . . . . . . . . 9 ⊢ ℕ0 ∈ V | |
| 6 | snex 5408 | . . . . . . . . 9 ⊢ {𝐾} ∈ V | |
| 7 | 5, 6 | xpex 7756 | . . . . . . . 8 ⊢ (ℕ0 × {𝐾}) ∈ V |
| 8 | 4, 7 | eqeltrri 2859 | . . . . . . 7 ⊢ (𝑥 ∈ ℕ0 ↦ 𝐾) ∈ V |
| 9 | 2, 3, 8 | fvmpt 6990 | . . . . . 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 2763 | . . . 4 ⊢ ((((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) ∧ 𝑦 ∈ ℕ0) ∧ 𝑥 = (𝐹‘𝑦)) → 𝐾 = 𝐾) | |
| 13 | smndex1ibas.m | . . . . . . . 8 ⊢ 𝑀 = (EndoFMnd‘ℕ0) | |
| 14 | eqid 2762 | . . . . . . . 8 ⊢ (Base‘𝑀) = (Base‘𝑀) | |
| 15 | 13, 14 | efmndbasf 18990 | . . . . . . 7 ⊢ (𝐹 ∈ (Base‘𝑀) → 𝐹:ℕ0⟶ℕ0) |
| 16 | ffvelcdm 7078 | . . . . . . . 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 6998 | . . 3 ⊢ (((𝐹 ∈ (Base‘𝑀) ∧ 𝐾 ∈ (0..^𝑁)) ∧ 𝑦 ∈ ℕ0) → ((𝐺‘𝐾)‘(𝐹‘𝑦)) = 𝐾) |
| 23 | 22 | mpteq2dva 5202 | . 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 19017 | . . . 4 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐺‘𝐾) ∈ (Base‘𝑀)) |
| 27 | 13, 14 | efmndbasf 18990 | . . . 4 ⊢ ((𝐺‘𝐾) ∈ (Base‘𝑀) → (𝐺‘𝐾):ℕ0⟶ℕ0) |
| 28 | 26, 27 | syl 18 | . . 3 ⊢ (𝐾 ∈ (0..^𝑁) → (𝐺‘𝐾):ℕ0⟶ℕ0) |
| 29 | fcompt 7131 | . . 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 2763 | . . . . . 6 ⊢ (𝑥 = 𝑦 → 𝐾 = 𝐾) | |
| 32 | 31 | cbvmptv 5213 | . . . . 5 ⊢ (𝑥 ∈ ℕ0 ↦ 𝐾) = (𝑦 ∈ ℕ0 ↦ 𝐾) |
| 33 | 2, 32 | eqtrdi 2813 | . . . 4 ⊢ (𝑛 = 𝐾 → (𝑥 ∈ ℕ0 ↦ 𝑛) = (𝑦 ∈ ℕ0 ↦ 𝐾)) |
| 34 | fconstmpt 5721 | . . . . 5 ⊢ (ℕ0 × {𝐾}) = (𝑦 ∈ ℕ0 ↦ 𝐾) | |
| 35 | 34, 7 | eqeltrri 2859 | . . . 4 ⊢ (𝑦 ∈ ℕ0 ↦ 𝐾) ∈ V |
| 36 | 33, 3, 35 | fvmpt 6990 | . . 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 2807 | 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 3453 {csn 4587 ↦ cmpt 5190 × cxp 5657 ∘ ccom 5663 ⟶wf 6533 ‘cfv 6537 (class class class)co 7417 0cc0 11128 ℕcn 12261 ℕ0cn0 12532 ..^cfzo 13713 mod cmo 13934 Basecbs 17307 EndoFMndcefmnd 18983 |
| 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 2215 ax-ext 2734 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7740 ax-cnex 11184 ax-resscn 11185 ax-1cn 11186 ax-icn 11187 ax-addcl 11188 ax-addrcl 11189 ax-mulcl 11190 ax-mulrcl 11191 ax-mulcom 11192 ax-addass 11193 ax-mulass 11194 ax-distr 11195 ax-i2m1 11196 ax-1ne0 11197 ax-1rid 11198 ax-rnegex 11199 ax-rrecex 11200 ax-cnre 11201 ax-pre-lttri 11202 ax-pre-lttrn 11203 ax-pre-ltadd 11204 ax-pre-mulgt0 11205 |
| 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 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-tp 4592 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7374 df-ov 7420 df-oprab 7421 df-mpo 7422 df-om 7867 df-1st 7990 df-2nd 7991 df-frecs 8284 df-wrecs 8315 df-recs 8364 df-rdg 8403 df-1o 8459 df-er 8700 df-map 8832 df-en 8957 df-dom 8958 df-sdom 8959 df-fin 8960 df-pnf 11273 df-mnf 11274 df-xr 11275 df-ltxr 11276 df-le 11277 df-sub 11471 df-neg 11472 df-nn 12262 df-2 12331 df-3 12332 df-4 12333 df-5 12334 df-6 12335 df-7 12336 df-8 12337 df-9 12338 df-n0 12533 df-z 12620 df-uz 12892 df-fz 13566 df-fzo 13714 df-struct 17245 df-slot 17280 df-ndx 17292 df-base 17308 df-plusg 17361 df-tset 17367 df-efmnd 18984 |
| This theorem is used by: smndex1mgm 19025 smndex1mndlem 19027 |
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