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Mirrors > Home > ILE Home > Th. List > ltrel | Unicode version |
Description: 'Less than' is a relation. (Contributed by NM, 14-Oct-2005.) |
Ref | Expression |
---|---|
ltrel |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ltrelxr 7818 | . 2 | |
2 | relxp 4643 | . 2 | |
3 | relss 4621 | . 2 | |
4 | 1, 2, 3 | mp2 16 | 1 |
Colors of variables: wff set class |
Syntax hints: wss 3066 cxp 4532 wrel 4539 cxr 7792 clt 7793 |
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 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2119 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-nf 1437 df-sb 1736 df-clab 2124 df-cleq 2130 df-clel 2133 df-nfc 2268 df-v 2683 df-un 3070 df-in 3072 df-ss 3079 df-pr 3529 df-opab 3985 df-xp 4540 df-rel 4541 df-xr 7797 df-ltxr 7798 |
This theorem is referenced by: (None) |
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