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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 12547 | . . . . 5 ⊢ 1 ∈ ℕ0 | |
| 2 | ssidd 3954 | . . . . . 6 ⊢ (𝜑 → 𝑅 ⊆ 𝑅) | |
| 3 | rtrclreclem1.1 | . . . . . . 7 ⊢ (𝜑 → 𝑅 ∈ 𝑉) | |
| 4 | 3 | relexp1d 15105 | . . . . . 6 ⊢ (𝜑 → (𝑅↑𝑟1) = 𝑅) |
| 5 | 2, 4 | sseqtrrd 3968 | . . . . 5 ⊢ (𝜑 → 𝑅 ⊆ (𝑅↑𝑟1)) |
| 6 | oveq2 7422 | . . . . . . 7 ⊢ (𝑛 = 1 → (𝑅↑𝑟𝑛) = (𝑅↑𝑟1)) | |
| 7 | 6 | sseq2d 3963 | . . . . . 6 ⊢ (𝑛 = 1 → (𝑅 ⊆ (𝑅↑𝑟𝑛) ↔ 𝑅 ⊆ (𝑅↑𝑟1))) |
| 8 | 7 | rspcev 3576 | . . . . 5 ⊢ ((1 ∈ ℕ0 ∧ 𝑅 ⊆ (𝑅↑𝑟1)) → ∃𝑛 ∈ ℕ0 𝑅 ⊆ (𝑅↑𝑟𝑛)) |
| 9 | 1, 5, 8 | sylancr 599 | . . . 4 ⊢ (𝜑 → ∃𝑛 ∈ ℕ0 𝑅 ⊆ (𝑅↑𝑟𝑛)) |
| 10 | ssiun 5005 | . . . 4 ⊢ (∃𝑛 ∈ ℕ0 𝑅 ⊆ (𝑅↑𝑟𝑛) → 𝑅 ⊆ ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛)) | |
| 11 | 9, 10 | syl 18 | . . 3 ⊢ (𝜑 → 𝑅 ⊆ ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛)) |
| 12 | eqidd 2761 | . . . 4 ⊢ (𝜑 → (𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛)) = (𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛))) | |
| 13 | oveq1 7421 | . . . . . 6 ⊢ (𝑟 = 𝑅 → (𝑟↑𝑟𝑛) = (𝑅↑𝑟𝑛)) | |
| 14 | 13 | iuneq2d 4981 | . . . . 5 ⊢ (𝑟 = 𝑅 → ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛) = ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛)) |
| 15 | 14 | adantl 487 | . . . 4 ⊢ ((𝜑 ∧ 𝑟 = 𝑅) → ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛) = ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛)) |
| 16 | 3 | elexd 3473 | . . . 4 ⊢ (𝜑 → 𝑅 ∈ V) |
| 17 | nn0ex 12537 | . . . . . 6 ⊢ ℕ0 ∈ V | |
| 18 | ovex 7447 | . . . . . 6 ⊢ (𝑅↑𝑟𝑛) ∈ V | |
| 19 | 17, 18 | iunex 7966 | . . . . 5 ⊢ ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛) ∈ V |
| 20 | 19 | a1i 11 | . . . 4 ⊢ (𝜑 → ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛) ∈ V) |
| 21 | 12, 15, 16, 20 | fvmptd 6995 | . . 3 ⊢ (𝜑 → ((𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛))‘𝑅) = ∪ 𝑛 ∈ ℕ0 (𝑅↑𝑟𝑛)) |
| 22 | 11, 21 | sseqtrrd 3968 | . 2 ⊢ (𝜑 → 𝑅 ⊆ ((𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛))‘𝑅)) |
| 23 | df-rtrclrec 15132 | . . 3 ⊢ t*rec = (𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛)) | |
| 24 | fveq1 6878 | . . . . 5 ⊢ (t*rec = (𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛)) → (t*rec‘𝑅) = ((𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛))‘𝑅)) | |
| 25 | 24 | sseq2d 3963 | . . . 4 ⊢ (t*rec = (𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛)) → (𝑅 ⊆ (t*rec‘𝑅) ↔ 𝑅 ⊆ ((𝑟 ∈ V ↦ ∪ 𝑛 ∈ ℕ0 (𝑟↑𝑟𝑛))‘𝑅))) |
| 26 | 25 | imbi2d 343 | . . 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 234 | 1 ⊢ (𝜑 → 𝑅 ⊆ (t*rec‘𝑅)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 = wceq 1570 ∈ wcel 2145 ∃wrex 3086 Vcvv 3450 ⊆ wss 3899 ∪ ciun 4951 ↦ cmpt 5186 ‘cfv 6533 (class class class)co 7414 1c1 11128 ℕ0cn0 12531 ↑𝑟crelexp 15095 t*reccrtrcl 15131 |
| 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 2213 ax-ext 2732 ax-rep 5232 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7737 ax-cnex 11183 ax-resscn 11184 ax-1cn 11185 ax-icn 11186 ax-addcl 11187 ax-addrcl 11188 ax-mulcl 11189 ax-mulrcl 11190 ax-mulcom 11191 ax-addass 11192 ax-mulass 11193 ax-distr 11194 ax-i2m1 11195 ax-1ne0 11196 ax-1rid 11197 ax-rnegex 11198 ax-rrecex 11199 ax-cnre 11200 ax-pre-lttri 11201 ax-pre-lttrn 11202 ax-pre-ltadd 11203 ax-pre-mulgt0 11204 |
| 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 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6299 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-riota 7371 df-ov 7417 df-oprab 7418 df-mpo 7419 df-om 7864 df-2nd 7988 df-frecs 8281 df-wrecs 8312 df-recs 8361 df-rdg 8400 df-er 8699 df-en 8956 df-dom 8957 df-sdom 8958 df-pnf 11272 df-mnf 11273 df-xr 11274 df-ltxr 11275 df-le 11276 df-sub 11470 df-neg 11471 df-nn 12261 df-n0 12532 df-z 12619 df-uz 12891 df-seq 14069 df-relexp 15096 df-rtrclrec 15132 |
| This theorem is used by: dfrtrcl2 15138 |
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