| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > intexab | Structured version Visualization version GIF version | ||
| Description: The intersection of a nonempty class abstraction exists. (Contributed by NM, 21-Oct-2003.) |
| Ref | Expression |
|---|---|
| intexab | ⊢ (∃𝑥𝜑 ↔ ∩ {𝑥 ∣ 𝜑} ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | abn0 4348 | . 2 ⊢ ({𝑥 ∣ 𝜑} ≠ ∅ ↔ ∃𝑥𝜑) | |
| 2 | intex 5299 | . 2 ⊢ ({𝑥 ∣ 𝜑} ≠ ∅ ↔ ∩ {𝑥 ∣ 𝜑} ∈ V) | |
| 3 | 1, 2 | bitr3i 277 | 1 ⊢ (∃𝑥𝜑 ↔ ∩ {𝑥 ∣ 𝜑} ∈ V) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∃wex 1779 ∈ wcel 2109 {cab 2707 ≠ wne 2925 Vcvv 3447 ∅c0 4296 ∩ cint 4910 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5251 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-clab 2708 df-cleq 2721 df-clel 2803 df-ne 2926 df-ral 3045 df-rex 3054 df-rab 3406 df-v 3449 df-dif 3917 df-in 3921 df-ss 3931 df-nul 4297 df-int 4911 |
| This theorem is referenced by: intexrab 5302 tcmin 9694 cfval 10200 efgval 19647 relintabex 43570 rclexi 43604 rtrclex 43606 trclexi 43609 rtrclexi 43610 aiotaexb 47090 |
| Copyright terms: Public domain | W3C validator |