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Mirrors > Home > MPE Home > Th. List > inrot | Structured version Visualization version GIF version |
Description: Rotate the intersection of 3 classes. (Contributed by NM, 27-Aug-2012.) |
Ref | Expression |
---|---|
inrot | ⊢ ((𝐴 ∩ 𝐵) ∩ 𝐶) = ((𝐶 ∩ 𝐴) ∩ 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | in31 4199 | . 2 ⊢ ((𝐴 ∩ 𝐵) ∩ 𝐶) = ((𝐶 ∩ 𝐵) ∩ 𝐴) | |
2 | in32 4197 | . 2 ⊢ ((𝐶 ∩ 𝐵) ∩ 𝐴) = ((𝐶 ∩ 𝐴) ∩ 𝐵) | |
3 | 1, 2 | eqtri 2844 | 1 ⊢ ((𝐴 ∩ 𝐵) ∩ 𝐶) = ((𝐶 ∩ 𝐴) ∩ 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1533 ∩ cin 3934 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-rab 3147 df-v 3496 df-in 3942 |
This theorem is referenced by: (None) |
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