| Mathbox for BTernaryTau |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > inv2 | Structured version Visualization version GIF version | ||
| Description: The intersection of the universal class with a class is itself. A commuted form of inv1 4347. (Contributed by BTernaryTau, 24-Jun-2026.) |
| Ref | Expression |
|---|---|
| inv2 | ⊢ (V ∩ 𝐴) = 𝐴 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | inv1 4347 | . 2 ⊢ (𝐴 ∩ V) = 𝐴 | |
| 2 | 1 | ineqcomi 4156 | 1 ⊢ (V ∩ 𝐴) = 𝐴 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 Vcvv 3450 ∩ cin 3897 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2100 df-clab 2739 df-cleq 2752 df-clel 2835 df-rab 3413 df-v 3452 df-in 3905 df-ss 3915 |
| This theorem is used by: dfscott3 35673 |
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