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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 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ltrelxr 7545 |
. 2
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2 | relxp 4547 |
. 2
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3 | relss 4525 |
. 2
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4 | 1, 2, 3 | mp2 16 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-io 665 ax-5 1381 ax-7 1382 ax-gen 1383 ax-ie1 1427 ax-ie2 1428 ax-8 1440 ax-10 1441 ax-11 1442 ax-i12 1443 ax-bndl 1444 ax-4 1445 ax-17 1464 ax-i9 1468 ax-ial 1472 ax-i5r 1473 ax-ext 2070 |
This theorem depends on definitions: df-bi 115 df-3an 926 df-tru 1292 df-nf 1395 df-sb 1693 df-clab 2075 df-cleq 2081 df-clel 2084 df-nfc 2217 df-v 2621 df-un 3003 df-in 3005 df-ss 3012 df-pr 3453 df-opab 3900 df-xp 4444 df-rel 4445 df-xr 7524 df-ltxr 7525 |
This theorem is referenced by: (None) |
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