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Mirrors > Home > ILE Home > Th. List > isfi | Unicode version |
Description: Express " is finite." Definition 10.29 of [TakeutiZaring] p. 91 (whose " " is a predicate instead of a class). (Contributed by NM, 22-Aug-2008.) |
Ref | Expression |
---|---|
isfi |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-fin 6637 | . . 3 | |
2 | 1 | eleq2i 2206 | . 2 |
3 | relen 6638 | . . . . 5 | |
4 | 3 | brrelex1i 4582 | . . . 4 |
5 | 4 | rexlimivw 2545 | . . 3 |
6 | breq1 3932 | . . . 4 | |
7 | 6 | rexbidv 2438 | . . 3 |
8 | 5, 7 | elab3 2836 | . 2 |
9 | 2, 8 | bitri 183 | 1 |
Colors of variables: wff set class |
Syntax hints: wb 104 wceq 1331 wcel 1480 cab 2125 wrex 2417 cvv 2686 class class class wbr 3929 com 4504 cen 6632 cfn 6634 |
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-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 ax-sep 4046 ax-pow 4098 ax-pr 4131 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-nf 1437 df-sb 1736 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-ral 2421 df-rex 2422 df-v 2688 df-un 3075 df-in 3077 df-ss 3084 df-pw 3512 df-sn 3533 df-pr 3534 df-op 3536 df-br 3930 df-opab 3990 df-xp 4545 df-rel 4546 df-en 6635 df-fin 6637 |
This theorem is referenced by: snfig 6708 fict 6762 fidceq 6763 nnfi 6766 enfi 6767 ssfilem 6769 dif1enen 6774 php5fin 6776 fisbth 6777 fin0 6779 fin0or 6780 diffitest 6781 findcard 6782 findcard2 6783 findcard2s 6784 diffisn 6787 infnfi 6789 fientri3 6803 unsnfi 6807 unsnfidcex 6808 unsnfidcel 6809 fiintim 6817 fidcenumlemim 6840 finnum 7039 hashcl 10527 hashen 10530 fihashdom 10549 hashun 10551 zfz1iso 10584 |
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