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Mirrors > Home > ILE Home > Th. List > brrelex1i | Unicode version |
Description: The first argument of a binary relation exists. (An artifact of our ordered pair definition.) (Contributed by NM, 4-Jun-1998.) |
Ref | Expression |
---|---|
brrelexi.1 |
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Ref | Expression |
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brrelex1i |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | brrelexi.1 |
. 2
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2 | brrelex1 4490 |
. 2
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3 | 1, 2 | mpan 416 |
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 105 ax-ia2 106 ax-ia3 107 ax-io 666 ax-5 1382 ax-7 1383 ax-gen 1384 ax-ie1 1428 ax-ie2 1429 ax-8 1441 ax-10 1442 ax-11 1443 ax-i12 1444 ax-bndl 1445 ax-4 1446 ax-14 1451 ax-17 1465 ax-i9 1469 ax-ial 1473 ax-i5r 1474 ax-ext 2071 ax-sep 3963 ax-pow 4015 ax-pr 4045 |
This theorem depends on definitions: df-bi 116 df-3an 927 df-tru 1293 df-nf 1396 df-sb 1694 df-clab 2076 df-cleq 2082 df-clel 2085 df-nfc 2218 df-ral 2365 df-rex 2366 df-v 2622 df-un 3004 df-in 3006 df-ss 3013 df-pw 3435 df-sn 3456 df-pr 3457 df-op 3459 df-br 3852 df-opab 3906 df-xp 4458 df-rel 4459 |
This theorem is referenced by: nprrel 4496 vtoclr 4499 opeliunxp2 4589 ideqg 4600 issetid 4603 fvmptss2 5392 opeliunxp2f 6017 brtpos2 6030 brdomg 6519 ctex 6524 isfi 6532 en1uniel 6575 xpdom2 6601 xpdom1g 6603 xpen 6615 isbth 6730 djudom 6837 climcl 10731 climi 10736 climrecl 10773 structex 11567 |
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