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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 43953 | . 2 ⊢ r* = (𝑟 ∈ V ↦ ((𝑟↑𝑟0) ∪ (𝑟↑𝑟1))) | |
| 2 | df-pr 4582 | . . . . 5 ⊢ {0, 1} = ({0} ∪ {1}) | |
| 3 | iuneq1 4962 | . . . . 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 5048 | . . . 4 ⊢ ∪ 𝑛 ∈ ({0} ∪ {1})(𝑟↑𝑟𝑛) = (∪ 𝑛 ∈ {0} (𝑟↑𝑟𝑛) ∪ ∪ 𝑛 ∈ {1} (𝑟↑𝑟𝑛)) | |
| 6 | c0ex 11128 | . . . . . 6 ⊢ 0 ∈ V | |
| 7 | oveq2 7366 | . . . . . 6 ⊢ (𝑛 = 0 → (𝑟↑𝑟𝑛) = (𝑟↑𝑟0)) | |
| 8 | 6, 7 | iunxsn 5045 | . . . . 5 ⊢ ∪ 𝑛 ∈ {0} (𝑟↑𝑟𝑛) = (𝑟↑𝑟0) |
| 9 | 1ex 11130 | . . . . . 6 ⊢ 1 ∈ V | |
| 10 | oveq2 7366 | . . . . . 6 ⊢ (𝑛 = 1 → (𝑟↑𝑟𝑛) = (𝑟↑𝑟1)) | |
| 11 | 9, 10 | iunxsn 5045 | . . . . 5 ⊢ ∪ 𝑛 ∈ {1} (𝑟↑𝑟𝑛) = (𝑟↑𝑟1) |
| 12 | 8, 11 | uneq12i 4117 | . . . 4 ⊢ (∪ 𝑛 ∈ {0} (𝑟↑𝑟𝑛) ∪ ∪ 𝑛 ∈ {1} (𝑟↑𝑟𝑛)) = ((𝑟↑𝑟0) ∪ (𝑟↑𝑟1)) |
| 13 | 4, 5, 12 | 3eqtri 2762 | . . 3 ⊢ ∪ 𝑛 ∈ {0, 1} (𝑟↑𝑟𝑛) = ((𝑟↑𝑟0) ∪ (𝑟↑𝑟1)) |
| 14 | 13 | mpteq2i 5193 | . 2 ⊢ (𝑟 ∈ V ↦ ∪ 𝑛 ∈ {0, 1} (𝑟↑𝑟𝑛)) = (𝑟 ∈ V ↦ ((𝑟↑𝑟0) ∪ (𝑟↑𝑟1))) |
| 15 | 1, 14 | eqtr4i 2761 | 1 ⊢ r* = (𝑟 ∈ V ↦ ∪ 𝑛 ∈ {0, 1} (𝑟↑𝑟𝑛)) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 Vcvv 3439 ∪ cun 3898 {csn 4579 {cpr 4581 ∪ ciun 4945 ↦ cmpt 5178 (class class class)co 7358 0cc0 11028 1c1 11029 ↑𝑟crelexp 14944 r*crcl 43950 |
| 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 2183 ax-ext 2707 ax-sep 5240 ax-nul 5250 ax-pow 5309 ax-pr 5376 ax-un 7680 ax-cnex 11084 ax-resscn 11085 ax-1cn 11086 ax-icn 11087 ax-addcl 11088 ax-addrcl 11089 ax-mulcl 11090 ax-mulrcl 11091 ax-mulcom 11092 ax-addass 11093 ax-mulass 11094 ax-distr 11095 ax-i2m1 11096 ax-1ne0 11097 ax-1rid 11098 ax-rnegex 11099 ax-rrecex 11100 ax-cnre 11101 ax-pre-lttri 11102 ax-pre-lttrn 11103 ax-pre-ltadd 11104 ax-pre-mulgt0 11105 |
| 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 2538 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2810 df-nfc 2884 df-ne 2932 df-nel 3036 df-ral 3051 df-rex 3060 df-reu 3350 df-rab 3399 df-v 3441 df-sbc 3740 df-csb 3849 df-dif 3903 df-un 3905 df-in 3907 df-ss 3917 df-pss 3920 df-nul 4285 df-if 4479 df-pw 4555 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4863 df-int 4902 df-iun 4947 df-br 5098 df-opab 5160 df-mpt 5179 df-tr 5205 df-id 5518 df-eprel 5523 df-po 5531 df-so 5532 df-fr 5576 df-we 5578 df-xp 5629 df-rel 5630 df-cnv 5631 df-co 5632 df-dm 5633 df-rn 5634 df-res 5635 df-ima 5636 df-pred 6258 df-ord 6319 df-on 6320 df-lim 6321 df-suc 6322 df-iota 6447 df-fun 6493 df-fn 6494 df-f 6495 df-f1 6496 df-fo 6497 df-f1o 6498 df-fv 6499 df-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-om 7809 df-2nd 7934 df-frecs 8223 df-wrecs 8254 df-recs 8303 df-rdg 8341 df-er 8635 df-en 8886 df-dom 8887 df-sdom 8888 df-pnf 11170 df-mnf 11171 df-xr 11172 df-ltxr 11173 df-le 11174 df-sub 11368 df-neg 11369 df-nn 12148 df-n0 12404 df-z 12491 df-uz 12754 df-seq 13927 df-relexp 14945 df-rcl 43951 |
| This theorem is referenced by: brfvrcld 43969 fvrcllb0d 43971 fvrcllb0da 43972 fvrcllb1d 43973 corclrcl 43985 corcltrcl 44017 cotrclrcl 44020 |
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