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Mirrors > Home > ILE Home > Th. List > metrel | Unicode version |
Description: The class of metrics is a relation. (Contributed by Jim Kingdon, 20-Apr-2023.) |
Ref | Expression |
---|---|
metrel |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mptrel 4707 | . 2 | |
2 | df-met 12328 | . . 3 | |
3 | 2 | releqi 4662 | . 2 |
4 | 1, 3 | mpbir 145 | 1 |
Colors of variables: wff set class |
Syntax hints: wa 103 wb 104 wceq 1332 wral 2432 crab 2436 cvv 2709 class class class wbr 3961 cmpt 4021 cxp 4577 wrel 4584 (class class class)co 5814 cmap 6582 cr 7710 cc0 7711 caddc 7714 cle 7892 cmet 12320 |
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 1481 ax-10 1482 ax-11 1483 ax-i12 1484 ax-bndl 1486 ax-4 1487 ax-17 1503 ax-i9 1507 ax-ial 1511 ax-i5r 1512 ax-14 2128 ax-ext 2136 ax-sep 4078 ax-pow 4130 ax-pr 4164 |
This theorem depends on definitions: df-bi 116 df-3an 965 df-tru 1335 df-nf 1438 df-sb 1740 df-clab 2141 df-cleq 2147 df-clel 2150 df-nfc 2285 df-ral 2437 df-rex 2438 df-v 2711 df-un 3102 df-in 3104 df-ss 3111 df-pw 3541 df-sn 3562 df-pr 3563 df-op 3565 df-opab 4022 df-mpt 4023 df-xp 4585 df-rel 4586 df-met 12328 |
This theorem is referenced by: metflem 12688 ismet2 12693 |
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