Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > f1oprg | Unicode version |
Description: An unordered pair of ordered pairs with different elements is a one-to-one onto function. (Contributed by Alexander van der Vekens, 14-Aug-2017.) |
Ref | Expression |
---|---|
f1oprg |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | f1osng 5408 | . . . . 5 | |
2 | 1 | ad2antrr 479 | . . . 4 |
3 | f1osng 5408 | . . . . 5 | |
4 | 3 | ad2antlr 480 | . . . 4 |
5 | disjsn2 3586 | . . . . 5 | |
6 | 5 | ad2antrl 481 | . . . 4 |
7 | disjsn2 3586 | . . . . 5 | |
8 | 7 | ad2antll 482 | . . . 4 |
9 | f1oun 5387 | . . . 4 | |
10 | 2, 4, 6, 8, 9 | syl22anc 1217 | . . 3 |
11 | df-pr 3534 | . . . . . 6 | |
12 | 11 | eqcomi 2143 | . . . . 5 |
13 | 12 | a1i 9 | . . . 4 |
14 | df-pr 3534 | . . . . . 6 | |
15 | 14 | eqcomi 2143 | . . . . 5 |
16 | 15 | a1i 9 | . . . 4 |
17 | df-pr 3534 | . . . . . 6 | |
18 | 17 | eqcomi 2143 | . . . . 5 |
19 | 18 | a1i 9 | . . . 4 |
20 | 13, 16, 19 | f1oeq123d 5362 | . . 3 |
21 | 10, 20 | mpbid 146 | . 2 |
22 | 21 | ex 114 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wceq 1331 wcel 1480 wne 2308 cun 3069 cin 3070 c0 3363 csn 3527 cpr 3528 cop 3530 wf1o 5122 |
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-in1 603 ax-in2 604 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-fal 1337 df-nf 1437 df-sb 1736 df-eu 2002 df-mo 2003 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-ne 2309 df-ral 2421 df-rex 2422 df-v 2688 df-dif 3073 df-un 3075 df-in 3077 df-ss 3084 df-nul 3364 df-pw 3512 df-sn 3533 df-pr 3534 df-op 3536 df-br 3930 df-opab 3990 df-id 4215 df-xp 4545 df-rel 4546 df-cnv 4547 df-co 4548 df-dm 4549 df-rn 4550 df-fun 5125 df-fn 5126 df-f 5127 df-f1 5128 df-fo 5129 df-f1o 5130 |
This theorem is referenced by: (None) |
Copyright terms: Public domain | W3C validator |