Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > dfco2 | Unicode version |
Description: Alternate definition of a class composition, using only one bound variable. (Contributed by NM, 19-Dec-2008.) |
Ref | Expression |
---|---|
dfco2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | relco 5032 | . 2 | |
2 | reliun 4655 | . . 3 | |
3 | relxp 4643 | . . . 4 | |
4 | 3 | a1i 9 | . . 3 |
5 | 2, 4 | mprgbir 2488 | . 2 |
6 | vex 2684 | . . . 4 | |
7 | vex 2684 | . . . 4 | |
8 | opelco2g 4702 | . . . 4 | |
9 | 6, 7, 8 | mp2an 422 | . . 3 |
10 | eliun 3812 | . . . 4 | |
11 | rexv 2699 | . . . 4 | |
12 | opelxp 4564 | . . . . . 6 | |
13 | vex 2684 | . . . . . . . . 9 | |
14 | 13, 6 | elimasn 4901 | . . . . . . . 8 |
15 | 13, 6 | opelcnv 4716 | . . . . . . . 8 |
16 | 14, 15 | bitri 183 | . . . . . . 7 |
17 | 13, 7 | elimasn 4901 | . . . . . . 7 |
18 | 16, 17 | anbi12i 455 | . . . . . 6 |
19 | 12, 18 | bitri 183 | . . . . 5 |
20 | 19 | exbii 1584 | . . . 4 |
21 | 10, 11, 20 | 3bitrri 206 | . . 3 |
22 | 9, 21 | bitri 183 | . 2 |
23 | 1, 5, 22 | eqrelriiv 4628 | 1 |
Colors of variables: wff set class |
Syntax hints: wa 103 wb 104 wceq 1331 wex 1468 wcel 1480 wrex 2415 cvv 2681 csn 3522 cop 3525 ciun 3808 cxp 4532 ccnv 4533 cima 4537 ccom 4538 wrel 4539 |
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 |
This theorem depends on definitions: df-bi 116 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-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-iun 3810 df-br 3925 df-opab 3985 df-xp 4540 df-rel 4541 df-cnv 4542 df-co 4543 df-dm 4544 df-rn 4545 df-res 4546 df-ima 4547 |
This theorem is referenced by: dfco2a 5034 |
Copyright terms: Public domain | W3C validator |