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Mirrors > Home > ILE Home > Th. List > rexuz2 | Unicode version |
Description: Restricted existential quantification in an upper set of integers. (Contributed by NM, 9-Sep-2005.) |
Ref | Expression |
---|---|
rexuz2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eluz2 9325 | . . . . . 6 | |
2 | df-3an 964 | . . . . . 6 | |
3 | 1, 2 | bitri 183 | . . . . 5 |
4 | 3 | anbi1i 453 | . . . 4 |
5 | anass 398 | . . . . 5 | |
6 | anass 398 | . . . . . 6 | |
7 | an12 550 | . . . . . 6 | |
8 | 6, 7 | bitri 183 | . . . . 5 |
9 | 5, 8 | bitri 183 | . . . 4 |
10 | 4, 9 | bitri 183 | . . 3 |
11 | 10 | rexbii2 2444 | . 2 |
12 | r19.42v 2586 | . 2 | |
13 | 11, 12 | bitri 183 | 1 |
Colors of variables: wff set class |
Syntax hints: wa 103 wb 104 w3a 962 wcel 1480 wrex 2415 class class class wbr 3924 cfv 5118 cle 7794 cz 9047 cuz 9319 |
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 2119 ax-sep 4041 ax-pow 4093 ax-pr 4126 ax-cnex 7704 ax-resscn 7705 |
This theorem depends on definitions: df-bi 116 df-3or 963 df-3an 964 df-tru 1334 df-nf 1437 df-sb 1736 df-eu 2000 df-mo 2001 df-clab 2124 df-cleq 2130 df-clel 2133 df-nfc 2268 df-ral 2419 df-rex 2420 df-rab 2423 df-v 2683 df-sbc 2905 df-un 3070 df-in 3072 df-ss 3079 df-pw 3507 df-sn 3528 df-pr 3529 df-op 3531 df-uni 3732 df-br 3925 df-opab 3985 df-mpt 3986 df-id 4210 df-xp 4540 df-rel 4541 df-cnv 4542 df-co 4543 df-dm 4544 df-rn 4545 df-res 4546 df-ima 4547 df-iota 5083 df-fun 5120 df-fn 5121 df-f 5122 df-fv 5126 df-ov 5770 df-neg 7929 df-z 9048 df-uz 9320 |
This theorem is referenced by: 2rexuz 9370 |
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