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| Mirrors > Home > MPE Home > Th. List > Mathboxes > dfrcl4 | Structured version Visualization version GIF version | ||
| Description: Reflexive closure of a relation as indexed union of powers of the relation. (Contributed by RP, 8-Jun-2020.) |
| Ref | Expression |
|---|---|
| dfrcl4 | ⊢ r* = (𝑟 ∈ V ↦ ∪ 𝑛 ∈ {0, 1} (𝑟↑𝑟𝑛)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dfrcl3 43773 | . 2 ⊢ r* = (𝑟 ∈ V ↦ ((𝑟↑𝑟0) ∪ (𝑟↑𝑟1))) | |
| 2 | df-pr 4578 | . . . . 5 ⊢ {0, 1} = ({0} ∪ {1}) | |
| 3 | iuneq1 4958 | . . . . 5 ⊢ ({0, 1} = ({0} ∪ {1}) → ∪ 𝑛 ∈ {0, 1} (𝑟↑𝑟𝑛) = ∪ 𝑛 ∈ ({0} ∪ {1})(𝑟↑𝑟𝑛)) | |
| 4 | 2, 3 | ax-mp 5 | . . . 4 ⊢ ∪ 𝑛 ∈ {0, 1} (𝑟↑𝑟𝑛) = ∪ 𝑛 ∈ ({0} ∪ {1})(𝑟↑𝑟𝑛) |
| 5 | iunxun 5044 | . . . 4 ⊢ ∪ 𝑛 ∈ ({0} ∪ {1})(𝑟↑𝑟𝑛) = (∪ 𝑛 ∈ {0} (𝑟↑𝑟𝑛) ∪ ∪ 𝑛 ∈ {1} (𝑟↑𝑟𝑛)) | |
| 6 | c0ex 11112 | . . . . . 6 ⊢ 0 ∈ V | |
| 7 | oveq2 7360 | . . . . . 6 ⊢ (𝑛 = 0 → (𝑟↑𝑟𝑛) = (𝑟↑𝑟0)) | |
| 8 | 6, 7 | iunxsn 5041 | . . . . 5 ⊢ ∪ 𝑛 ∈ {0} (𝑟↑𝑟𝑛) = (𝑟↑𝑟0) |
| 9 | 1ex 11114 | . . . . . 6 ⊢ 1 ∈ V | |
| 10 | oveq2 7360 | . . . . . 6 ⊢ (𝑛 = 1 → (𝑟↑𝑟𝑛) = (𝑟↑𝑟1)) | |
| 11 | 9, 10 | iunxsn 5041 | . . . . 5 ⊢ ∪ 𝑛 ∈ {1} (𝑟↑𝑟𝑛) = (𝑟↑𝑟1) |
| 12 | 8, 11 | uneq12i 4115 | . . . 4 ⊢ (∪ 𝑛 ∈ {0} (𝑟↑𝑟𝑛) ∪ ∪ 𝑛 ∈ {1} (𝑟↑𝑟𝑛)) = ((𝑟↑𝑟0) ∪ (𝑟↑𝑟1)) |
| 13 | 4, 5, 12 | 3eqtri 2758 | . . 3 ⊢ ∪ 𝑛 ∈ {0, 1} (𝑟↑𝑟𝑛) = ((𝑟↑𝑟0) ∪ (𝑟↑𝑟1)) |
| 14 | 13 | mpteq2i 5189 | . 2 ⊢ (𝑟 ∈ V ↦ ∪ 𝑛 ∈ {0, 1} (𝑟↑𝑟𝑛)) = (𝑟 ∈ V ↦ ((𝑟↑𝑟0) ∪ (𝑟↑𝑟1))) |
| 15 | 1, 14 | eqtr4i 2757 | 1 ⊢ r* = (𝑟 ∈ V ↦ ∪ 𝑛 ∈ {0, 1} (𝑟↑𝑟𝑛)) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1541 Vcvv 3436 ∪ cun 3895 {csn 4575 {cpr 4577 ∪ ciun 4941 ↦ cmpt 5174 (class class class)co 7352 0cc0 11012 1c1 11013 ↑𝑟crelexp 14932 r*crcl 43770 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-sep 5236 ax-nul 5246 ax-pow 5305 ax-pr 5372 ax-un 7674 ax-cnex 11068 ax-resscn 11069 ax-1cn 11070 ax-icn 11071 ax-addcl 11072 ax-addrcl 11073 ax-mulcl 11074 ax-mulrcl 11075 ax-mulcom 11076 ax-addass 11077 ax-mulass 11078 ax-distr 11079 ax-i2m1 11080 ax-1ne0 11081 ax-1rid 11082 ax-rnegex 11083 ax-rrecex 11084 ax-cnre 11085 ax-pre-lttri 11086 ax-pre-lttrn 11087 ax-pre-ltadd 11088 ax-pre-mulgt0 11089 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-nel 3033 df-ral 3048 df-rex 3057 df-reu 3347 df-rab 3396 df-v 3438 df-sbc 3737 df-csb 3846 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-pss 3917 df-nul 4283 df-if 4475 df-pw 4551 df-sn 4576 df-pr 4578 df-op 4582 df-uni 4859 df-int 4898 df-iun 4943 df-br 5094 df-opab 5156 df-mpt 5175 df-tr 5201 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-pred 6254 df-ord 6315 df-on 6316 df-lim 6317 df-suc 6318 df-iota 6443 df-fun 6489 df-fn 6490 df-f 6491 df-f1 6492 df-fo 6493 df-f1o 6494 df-fv 6495 df-riota 7309 df-ov 7355 df-oprab 7356 df-mpo 7357 df-om 7803 df-2nd 7928 df-frecs 8217 df-wrecs 8248 df-recs 8297 df-rdg 8335 df-er 8628 df-en 8876 df-dom 8877 df-sdom 8878 df-pnf 11154 df-mnf 11155 df-xr 11156 df-ltxr 11157 df-le 11158 df-sub 11352 df-neg 11353 df-nn 12132 df-n0 12388 df-z 12475 df-uz 12739 df-seq 13915 df-relexp 14933 df-rcl 43771 |
| This theorem is referenced by: brfvrcld 43789 fvrcllb0d 43791 fvrcllb0da 43792 fvrcllb1d 43793 corclrcl 43805 corcltrcl 43837 cotrclrcl 43840 |
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