Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > vn0 | Structured version Visualization version GIF version |
Description: The universal class is not equal to the empty set. (Contributed by NM, 11-Sep-2008.) |
Ref | Expression |
---|---|
vn0 | ⊢ V ≠ ∅ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | vex 3176 | . 2 ⊢ 𝑥 ∈ V | |
2 | 1 | ne0ii 3882 | 1 ⊢ V ≠ ∅ |
Colors of variables: wff setvar class |
Syntax hints: ≠ wne 2780 Vcvv 3173 ∅c0 3874 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-v 3175 df-dif 3543 df-nul 3875 |
This theorem is referenced by: uniintsn 4449 relrelss 5576 imasaddfnlem 16011 imasvscafn 16020 cmpfi 21021 fclscmp 21644 compne 37665 |
Copyright terms: Public domain | W3C validator |