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| Mirrors > Home > MPE Home > Th. List > Mathboxes > dfrcl3 | Structured version Visualization version GIF version | ||
| Description: Reflexive closure of a relation as union of powers of the relation. (Contributed by RP, 6-Jun-2020.) |
| Ref | Expression |
|---|---|
| dfrcl3 | ⊢ r* = (𝑥 ∈ V ↦ ((𝑥↑𝑟0) ∪ (𝑥↑𝑟1))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dfrcl2 44618 | . 2 ⊢ r* = (𝑥 ∈ V ↦ (( I ↾ (dom 𝑥 ∪ ran 𝑥)) ∪ 𝑥)) | |
| 2 | relexp0g 15142 | . . . 4 ⊢ (𝑥 ∈ V → (𝑥↑𝑟0) = ( I ↾ (dom 𝑥 ∪ ran 𝑥))) | |
| 3 | relexp1g 15146 | . . . 4 ⊢ (𝑥 ∈ V → (𝑥↑𝑟1) = 𝑥) | |
| 4 | 2, 3 | uneq12d 4115 | . . 3 ⊢ (𝑥 ∈ V → ((𝑥↑𝑟0) ∪ (𝑥↑𝑟1)) = (( I ↾ (dom 𝑥 ∪ ran 𝑥)) ∪ 𝑥)) |
| 5 | 4 | mpteq2ia 5199 | . 2 ⊢ (𝑥 ∈ V ↦ ((𝑥↑𝑟0) ∪ (𝑥↑𝑟1))) = (𝑥 ∈ V ↦ (( I ↾ (dom 𝑥 ∪ ran 𝑥)) ∪ 𝑥)) |
| 6 | 1, 5 | eqtr4i 2786 | 1 ⊢ r* = (𝑥 ∈ V ↦ ((𝑥↑𝑟0) ∪ (𝑥↑𝑟1))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ∈ wcel 2145 Vcvv 3450 ∪ cun 3896 ↦ cmpt 5185 I cid 5541 dom cdm 5647 ran crn 5648 ↾ cres 5649 (class class class)co 7408 0cc0 11171 1c1 11172 ↑𝑟crelexp 15139 r*crcl 44616 |
| 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-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7734 ax-cnex 11227 ax-resscn 11228 ax-1cn 11229 ax-icn 11230 ax-addcl 11231 ax-addrcl 11232 ax-mulcl 11233 ax-mulrcl 11234 ax-mulcom 11235 ax-addass 11236 ax-mulass 11237 ax-distr 11238 ax-i2m1 11239 ax-1ne0 11240 ax-1rid 11241 ax-rnegex 11242 ax-rrecex 11243 ax-cnre 11244 ax-pre-lttri 11245 ax-pre-lttrn 11246 ax-pre-ltadd 11247 ax-pre-mulgt0 11248 |
| 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 3739 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-int 4907 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5542 df-eprel 5547 df-po 5555 df-so 5556 df-fr 5600 df-we 5602 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-pred 6293 df-ord 6354 df-on 6355 df-lim 6356 df-suc 6357 df-iota 6483 df-fun 6529 df-fn 6530 df-f 6531 df-f1 6532 df-fo 6533 df-f1o 6534 df-fv 6535 df-riota 7365 df-ov 7411 df-oprab 7412 df-mpo 7413 df-om 7861 df-2nd 7985 df-frecs 8277 df-wrecs 8308 df-recs 8357 df-rdg 8396 df-er 8695 df-en 8952 df-dom 8953 df-sdom 8954 df-pnf 11316 df-mnf 11317 df-xr 11318 df-ltxr 11319 df-le 11320 df-sub 11514 df-neg 11515 df-nn 12305 df-n0 12576 df-z 12663 df-uz 12935 df-seq 14113 df-relexp 15140 df-rcl 44617 |
| This theorem is used by: dfrcl4 44620 |
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