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| Mirrors > Home > MPE Home > Th. List > rtrclreclem1 | Structured version Visualization version GIF version | ||
| Description: The reflexive, transitive closure is indeed a closure. (Contributed by Drahflow, 12-Nov-2015.) (Revised by RP, 30-May-2020.) (Revised by AV, 12-Jul-2024.) |
| Ref | Expression |
|---|---|
| rtrclreclem1.1 | ⊢ (𝜑 → 𝑅 ∈ 𝑉) |
| Ref | Expression |
|---|---|
| rtrclreclem1 | ⊢ (𝜑 → 𝑅 ⊆ (t*rec‘𝑅)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1nn0 12444 | . . . . 5 ⊢ 1 ∈ ℕ0 | |
| 2 | ssidd 3938 | . . . . . 6 ⊢ (𝜑 → 𝑅 ⊆ 𝑅) | |
| 3 | rtrclreclem1.1 | . . . . . . 7 ⊢ (𝜑 → 𝑅 ∈ 𝑉) | |
| 4 | 3 | relexp1d 14982 | . . . . . 6 ⊢ (𝜑 → (𝑅↑𝑟1) = 𝑅) |
| 5 | 2, 4 | sseqtrrd 3952 | . . . . 5 ⊢ (𝜑 → 𝑅 ⊆ (𝑅↑𝑟1)) |
| 6 | oveq2 7364 | . . . . . . 7 ⊢ (𝑛 = 1 → (𝑅↑𝑟𝑛) = (𝑅↑𝑟1)) | |
| 7 | 6 | sseq2d 3947 | . . . . . 6 ⊢ (𝑛 = 1 → (𝑅 ⊆ (𝑅↑𝑟𝑛) ↔ 𝑅 ⊆ (𝑅↑𝑟1))) |
| 8 | 7 | rspcev 3560 | . . . . 5 ⊢ ((1 ∈ ℕ0 ∧ 𝑅 ⊆ (𝑅↑𝑟1)) → ∃𝑛 ∈ ℕ0 𝑅 ⊆ (𝑅↑𝑟𝑛)) |
| 9 | 1, 5, 8 | sylancr 593 | . . . 4 ⊢ (𝜑 → ∃𝑛 ∈ ℕ0 𝑅 ⊆ (𝑅↑𝑟𝑛)) |
| 10 | ssiun 4976 | . . . 4 ⊢ (∃𝑛 ∈ ℕ0 𝑅 ⊆ (𝑅↑𝑟𝑛) → 𝑅 ⊆ ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛)) | |
| 11 | 9, 10 | syl 17 | . . 3 ⊢ (𝜑 → 𝑅 ⊆ ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛)) |
| 12 | eqidd 2740 | . . . 4 ⊢ (𝜑 → (𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛)) = (𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛))) | |
| 13 | oveq1 7363 | . . . . . 6 ⊢ (𝑟 = 𝑅 → (𝑟↑𝑟𝑛) = (𝑅↑𝑟𝑛)) | |
| 14 | 13 | iuneq2d 4952 | . . . . 5 ⊢ (𝑟 = 𝑅 → ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛) = ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛)) |
| 15 | 14 | adantl 482 | . . . 4 ⊢ ((𝜑 ∧ 𝑟 = 𝑅) → ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛) = ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛)) |
| 16 | 3 | elexd 3454 | . . . 4 ⊢ (𝜑 → 𝑅 ∈ V) |
| 17 | nn0ex 12434 | . . . . . 6 ⊢ ℕ0 ∈ V | |
| 18 | ovex 7389 | . . . . . 6 ⊢ (𝑅↑𝑟𝑛) ∈ V | |
| 19 | 17, 18 | iunex 7910 | . . . . 5 ⊢ ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛) ∈ V |
| 20 | 19 | a1i 11 | . . . 4 ⊢ (𝜑 → ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛) ∈ V) |
| 21 | 12, 15, 16, 20 | fvmptd 6943 | . . 3 ⊢ (𝜑 → ((𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛))‘𝑅) = ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛)) |
| 22 | 11, 21 | sseqtrrd 3952 | . 2 ⊢ (𝜑 → 𝑅 ⊆ ((𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛))‘𝑅)) |
| 23 | df-rtrclrec 15009 | . . 3 ⊢ t*rec = (𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛)) | |
| 24 | fveq1 6826 | . . . . 5 ⊢ (t*rec = (𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛)) → (t*rec‘𝑅) = ((𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛))‘𝑅)) | |
| 25 | 24 | sseq2d 3947 | . . . 4 ⊢ (t*rec = (𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛)) → (𝑅 ⊆ (t*rec‘𝑅) ↔ 𝑅 ⊆ ((𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛))‘𝑅))) |
| 26 | 25 | imbi2d 341 | . . 3 ⊢ (t*rec = (𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛)) → ((𝜑 → 𝑅 ⊆ (t*rec‘𝑅)) ↔ (𝜑 → 𝑅 ⊆ ((𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛))‘𝑅)))) |
| 27 | 23, 26 | ax-mp 5 | . 2 ⊢ ((𝜑 → 𝑅 ⊆ (t*rec‘𝑅)) ↔ (𝜑 → 𝑅 ⊆ ((𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛))‘𝑅))) |
| 28 | 22, 27 | mpbir 232 | 1 ⊢ (𝜑 → 𝑅 ⊆ (t*rec‘𝑅)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 207 = wceq 1547 ∈ wcel 2119 ∃wrex 3063 Vcvv 3431 ⊆ wss 3883 ∪ ciun 4921 ↦ cmpt 5153 ‘cfv 6485 (class class class)co 7356 1c1 11030 ℕ0cn0 12428 ↑𝑟crelexp 14972 t*reccrtrcl 15008 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-rep 5199 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-cnex 11085 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3903 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-iun 4923 df-br 5073 df-opab 5135 df-mpt 5154 df-tr 5180 df-id 5513 df-eprel 5518 df-po 5526 df-so 5527 df-fr 5571 df-we 5573 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-pred 6252 df-ord 6313 df-on 6314 df-lim 6315 df-suc 6316 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-2nd 7932 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-er 8633 df-en 8884 df-dom 8885 df-sdom 8886 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-nn 12166 df-n0 12429 df-z 12516 df-uz 12780 df-seq 13955 df-relexp 14973 df-rtrclrec 15009 |
| This theorem is referenced by: dfrtrcl2 15015 |
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