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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 9607 | 
. . . . . 6
 | |
| 2 | df-3an 982 | 
. . . . . 6
 | |
| 3 | 1, 2 | bitri 184 | 
. . . . 5
 | 
| 4 | 3 | anbi1i 458 | 
. . . 4
 | 
| 5 | anass 401 | 
. . . . 5
 | |
| 6 | anass 401 | 
. . . . . 6
 | |
| 7 | an12 561 | 
. . . . . 6
 | |
| 8 | 6, 7 | bitri 184 | 
. . . . 5
 | 
| 9 | 5, 8 | bitri 184 | 
. . . 4
 | 
| 10 | 4, 9 | bitri 184 | 
. . 3
 | 
| 11 | 10 | rexbii2 2508 | 
. 2
 | 
| 12 | r19.42v 2654 | 
. 2
 | |
| 13 | 11, 12 | bitri 184 | 
1
 | 
| Colors of variables: wff set class | 
| Syntax hints:     | 
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-14 2170 ax-ext 2178 ax-sep 4151 ax-pow 4207 ax-pr 4242 ax-cnex 7970 ax-resscn 7971 | 
| This theorem depends on definitions: df-bi 117 df-3or 981 df-3an 982 df-tru 1367 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ral 2480 df-rex 2481 df-rab 2484 df-v 2765 df-sbc 2990 df-un 3161 df-in 3163 df-ss 3170 df-pw 3607 df-sn 3628 df-pr 3629 df-op 3631 df-uni 3840 df-br 4034 df-opab 4095 df-mpt 4096 df-id 4328 df-xp 4669 df-rel 4670 df-cnv 4671 df-co 4672 df-dm 4673 df-rn 4674 df-res 4675 df-ima 4676 df-iota 5219 df-fun 5260 df-fn 5261 df-f 5262 df-fv 5266 df-ov 5925 df-neg 8200 df-z 9327 df-uz 9602 | 
| This theorem is referenced by: 2rexuz 9656 | 
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