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Mirrors > Home > ILE Home > Th. List > nfunv | Unicode version |
Description: The universe is not a function. (Contributed by Raph Levien, 27-Jan-2004.) |
Ref | Expression |
---|---|
nfunv |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0nelxp 4372 | . . 3 | |
2 | 0ex 3884 | . . . 4 | |
3 | df-rel 4352 | . . . . . 6 | |
4 | 3 | biimpi 113 | . . . . 5 |
5 | 4 | sseld 2944 | . . . 4 |
6 | 2, 5 | mpi 15 | . . 3 |
7 | 1, 6 | mto 588 | . 2 |
8 | funrel 4919 | . 2 | |
9 | 7, 8 | mto 588 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wcel 1393 cvv 2557 wss 2917 c0 3224 cxp 4343 wrel 4350 wfun 4896 |
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-in1 544 ax-in2 545 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-nul 3883 ax-pow 3927 ax-pr 3944 |
This theorem depends on definitions: df-bi 110 df-3an 887 df-tru 1246 df-fal 1249 df-nf 1350 df-sb 1646 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-ne 2206 df-v 2559 df-dif 2920 df-un 2922 df-in 2924 df-ss 2931 df-nul 3225 df-pw 3361 df-sn 3381 df-pr 3382 df-op 3384 df-opab 3819 df-xp 4351 df-rel 4352 df-fun 4904 |
This theorem is referenced by: (None) |
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