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| Mirrors > Home > ILE Home > Th. List > 3reeanv | Unicode version | ||
| Description: Rearrange three existential quantifiers. (Contributed by Jeff Madsen, 11-Jun-2010.) |
| Ref | Expression |
|---|---|
| 3reeanv |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | r19.41v 2689 |
. . 3
| |
| 2 | reeanv 2703 |
. . . 4
| |
| 3 | 2 | anbi1i 458 |
. . 3
|
| 4 | 1, 3 | bitri 184 |
. 2
|
| 5 | df-3an 1006 |
. . . . 5
| |
| 6 | 5 | 2rexbii 2541 |
. . . 4
|
| 7 | reeanv 2703 |
. . . 4
| |
| 8 | 6, 7 | bitri 184 |
. . 3
|
| 9 | 8 | rexbii 2539 |
. 2
|
| 10 | df-3an 1006 |
. 2
| |
| 11 | 4, 9, 10 | 3bitr4i 212 |
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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-cleq 2224 df-clel 2227 df-nfc 2363 df-rex 2516 |
| This theorem is referenced by: imasmnd2 13534 imasgrp2 13696 imasrng 13968 imasring 14076 |
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