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Mirrors > Home > ILE Home > Th. List > reldom | GIF version |
Description: Dominance is a relation. (Contributed by NM, 28-Mar-1998.) |
Ref | Expression |
---|---|
reldom | ⊢ Rel ≼ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-dom 6644 | . 2 ⊢ ≼ = {〈𝑥, 𝑦〉 ∣ ∃𝑓 𝑓:𝑥–1-1→𝑦} | |
2 | 1 | relopabi 4673 | 1 ⊢ Rel ≼ |
Colors of variables: wff set class |
Syntax hints: ∃wex 1469 Rel wrel 4552 –1-1→wf1 5128 ≼ cdom 6641 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-14 1493 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 ax-sep 4054 ax-pow 4106 ax-pr 4139 |
This theorem depends on definitions: df-bi 116 df-3an 965 df-tru 1335 df-nf 1438 df-sb 1737 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-ral 2422 df-rex 2423 df-v 2691 df-un 3080 df-in 3082 df-ss 3089 df-pw 3517 df-sn 3538 df-pr 3539 df-op 3541 df-opab 3998 df-xp 4553 df-rel 4554 df-dom 6644 |
This theorem is referenced by: brdomg 6650 brdomi 6651 ctex 6655 domtr 6687 xpdom2 6733 xpdom1g 6735 mapdom1g 6749 isbth 6863 djudom 6986 difinfsn 6993 hashinfom 10556 |
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