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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 12447 | . . . . 5 ⊢ 1 ∈ ℕ0 | |
| 2 | ssidd 3946 | . . . . . 6 ⊢ (𝜑 → 𝑅 ⊆ 𝑅) | |
| 3 | rtrclreclem1.1 | . . . . . . 7 ⊢ (𝜑 → 𝑅 ∈ 𝑉) | |
| 4 | 3 | relexp1d 14985 | . . . . . 6 ⊢ (𝜑 → (𝑅↑𝑟1) = 𝑅) |
| 5 | 2, 4 | sseqtrrd 3960 | . . . . 5 ⊢ (𝜑 → 𝑅 ⊆ (𝑅↑𝑟1)) |
| 6 | oveq2 7369 | . . . . . . 7 ⊢ (𝑛 = 1 → (𝑅↑𝑟𝑛) = (𝑅↑𝑟1)) | |
| 7 | 6 | sseq2d 3955 | . . . . . 6 ⊢ (𝑛 = 1 → (𝑅 ⊆ (𝑅↑𝑟𝑛) ↔ 𝑅 ⊆ (𝑅↑𝑟1))) |
| 8 | 7 | rspcev 3565 | . . . . 5 ⊢ ((1 ∈ ℕ0 ∧ 𝑅 ⊆ (𝑅↑𝑟1)) → ∃𝑛 ∈ ℕ0 𝑅 ⊆ (𝑅↑𝑟𝑛)) |
| 9 | 1, 5, 8 | sylancr 588 | . . . 4 ⊢ (𝜑 → ∃𝑛 ∈ ℕ0 𝑅 ⊆ (𝑅↑𝑟𝑛)) |
| 10 | ssiun 4990 | . . . 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 2738 | . . . 4 ⊢ (𝜑 → (𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛)) = (𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛))) | |
| 13 | oveq1 7368 | . . . . . 6 ⊢ (𝑟 = 𝑅 → (𝑟↑𝑟𝑛) = (𝑅↑𝑟𝑛)) | |
| 14 | 13 | iuneq2d 4965 | . . . . 5 ⊢ (𝑟 = 𝑅 → ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛) = ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛)) |
| 15 | 14 | adantl 481 | . . . 4 ⊢ ((𝜑 ∧ 𝑟 = 𝑅) → ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛) = ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛)) |
| 16 | 3 | elexd 3454 | . . . 4 ⊢ (𝜑 → 𝑅 ∈ V) |
| 17 | nn0ex 12437 | . . . . . 6 ⊢ ℕ0 ∈ V | |
| 18 | ovex 7394 | . . . . . 6 ⊢ (𝑅↑𝑟𝑛) ∈ V | |
| 19 | 17, 18 | iunex 7915 | . . . . 5 ⊢ ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛) ∈ V |
| 20 | 19 | a1i 11 | . . . 4 ⊢ (𝜑 → ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛) ∈ V) |
| 21 | 12, 15, 16, 20 | fvmptd 6950 | . . 3 ⊢ (𝜑 → ((𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛))‘𝑅) = ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛)) |
| 22 | 11, 21 | sseqtrrd 3960 | . 2 ⊢ (𝜑 → 𝑅 ⊆ ((𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛))‘𝑅)) |
| 23 | df-rtrclrec 15012 | . . 3 ⊢ t*rec = (𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛)) | |
| 24 | fveq1 6834 | . . . . 5 ⊢ (t*rec = (𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛)) → (t*rec‘𝑅) = ((𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛))‘𝑅)) | |
| 25 | 24 | sseq2d 3955 | . . . 4 ⊢ (t*rec = (𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛)) → (𝑅 ⊆ (t*rec‘𝑅) ↔ 𝑅 ⊆ ((𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛))‘𝑅))) |
| 26 | 25 | imbi2d 340 | . . 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 231 | 1 ⊢ (𝜑 → 𝑅 ⊆ (t*rec‘𝑅)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 = wceq 1542 ∈ wcel 2114 ∃wrex 3062 Vcvv 3430 ⊆ wss 3890 ∪ ciun 4934 ↦ cmpt 5167 ‘cfv 6493 (class class class)co 7361 1c1 11033 ℕ0cn0 12431 ↑𝑟crelexp 14975 t*reccrtrcl 15011 |
| 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 5213 ax-sep 5232 ax-nul 5242 ax-pow 5303 ax-pr 5371 ax-un 7683 ax-cnex 11088 ax-resscn 11089 ax-1cn 11090 ax-icn 11091 ax-addcl 11092 ax-addrcl 11093 ax-mulcl 11094 ax-mulrcl 11095 ax-mulcom 11096 ax-addass 11097 ax-mulass 11098 ax-distr 11099 ax-i2m1 11100 ax-1ne0 11101 ax-1rid 11102 ax-rnegex 11103 ax-rrecex 11104 ax-cnre 11105 ax-pre-lttri 11106 ax-pre-lttrn 11107 ax-pre-ltadd 11108 ax-pre-mulgt0 11109 |
| 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 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6260 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7318 df-ov 7364 df-oprab 7365 df-mpo 7366 df-om 7812 df-2nd 7937 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11175 df-mnf 11176 df-xr 11177 df-ltxr 11178 df-le 11179 df-sub 11373 df-neg 11374 df-nn 12169 df-n0 12432 df-z 12519 df-uz 12783 df-seq 13958 df-relexp 14976 df-rtrclrec 15012 |
| This theorem is referenced by: dfrtrcl2 15018 |
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