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Mirrors > Home > ILE Home > Th. List > fvsn | Unicode version |
Description: The value of a singleton of an ordered pair is the second member. (Contributed by NM, 12-Aug-1994.) |
Ref | Expression |
---|---|
fvsn.1 | |
fvsn.2 |
Ref | Expression |
---|---|
fvsn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fvsn.1 | . . 3 | |
2 | fvsn.2 | . . 3 | |
3 | 1, 2 | funsn 4948 | . 2 |
4 | opexgOLD 3965 | . . . 4 | |
5 | 1, 2, 4 | mp2an 402 | . . 3 |
6 | 5 | snid 3402 | . 2 |
7 | funopfv 5213 | . 2 | |
8 | 3, 6, 7 | mp2 16 | 1 |
Colors of variables: wff set class |
Syntax hints: wceq 1243 wcel 1393 cvv 2557 csn 3375 cop 3378 wfun 4896 cfv 4902 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-bndl 1399 ax-4 1400 ax-14 1405 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 ax-sep 3875 ax-pow 3927 ax-pr 3944 |
This theorem depends on definitions: df-bi 110 df-3an 887 df-tru 1246 df-nf 1350 df-sb 1646 df-eu 1903 df-mo 1904 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-ral 2311 df-rex 2312 df-v 2559 df-sbc 2765 df-un 2922 df-in 2924 df-ss 2931 df-pw 3361 df-sn 3381 df-pr 3382 df-op 3384 df-uni 3581 df-br 3765 df-opab 3819 df-id 4030 df-xp 4351 df-rel 4352 df-cnv 4353 df-co 4354 df-dm 4355 df-iota 4867 df-fun 4904 df-fv 4910 |
This theorem is referenced by: fvsng 5359 fvsnun1 5360 fvpr1 5365 ac6sfi 6352 |
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