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| Mirrors > Home > MPE Home > Th. List > intv | Structured version Visualization version GIF version | ||
| Description: The intersection of the universal class is empty. (Contributed by NM, 11-Sep-2008.) |
| Ref | Expression |
|---|---|
| intv | ⊢ ∩ V = ∅ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0ex 5229 | . 2 ⊢ ∅ ∈ V | |
| 2 | int0el 4909 | . 2 ⊢ (∅ ∈ V → ∩ V = ∅) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ ∩ V = ∅ |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1547 ∈ wcel 2119 Vcvv 3431 ∅c0 4261 ∩ cint 4877 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2711 ax-nul 5228 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-tru 1550 df-fal 1560 df-ex 1787 df-sb 2074 df-clab 2718 df-cleq 2731 df-clel 2814 df-v 3433 df-dif 3886 df-ss 3900 df-nul 4262 df-int 4878 |
| This theorem is referenced by: (None) |
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