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| Mirrors > Home > MPE Home > Th. List > brin | Structured version Visualization version GIF version | ||
| Description: The intersection of two relations. (Contributed by FL, 7-Oct-2008.) |
| Ref | Expression |
|---|---|
| brin | ⊢ (𝐴(𝑅 ∩ 𝑆)𝐵 ↔ (𝐴𝑅𝐵 ∧ 𝐴𝑆𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elin 4092 | . 2 ⊢ (〈𝐴, 𝐵〉 ∈ (𝑅 ∩ 𝑆) ↔ (〈𝐴, 𝐵〉 ∈ 𝑅 ∧ 〈𝐴, 𝐵〉 ∈ 𝑆)) | |
| 2 | df-br 5103 | . 2 ⊢ (𝐴(𝑅 ∩ 𝑆)𝐵 ↔ 〈𝐴, 𝐵〉 ∈ (𝑅 ∩ 𝑆)) | |
| 3 | df-br 5103 | . . 3 ⊢ (𝐴𝑅𝐵 ↔ 〈𝐴, 𝐵〉 ∈ 𝑅) | |
| 4 | df-br 5103 | . . 3 ⊢ (𝐴𝑆𝐵 ↔ 〈𝐴, 𝐵〉 ∈ 𝑆) | |
| 5 | 3, 4 | anbi12i 640 | . 2 ⊢ ((𝐴𝑅𝐵 ∧ 𝐴𝑆𝐵) ↔ (〈𝐴, 𝐵〉 ∈ 𝑅 ∧ 〈𝐴, 𝐵〉 ∈ 𝑆)) |
| 6 | 1, 2, 5 | 3bitr4i 306 | 1 ⊢ (𝐴(𝑅 ∩ 𝑆)𝐵 ↔ (𝐴𝑅𝐵 ∧ 𝐴𝑆𝐵)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ↔ wb 209 ∧ wa 401 ∈ wcel 2144 ∩ cin 4088 〈cop 4834 class class class wbr 5102 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1572 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-v 3452 df-in 4090 df-br 5103 |
| This theorem is used by: brinxp2 5730 trin2 6119 poirr2 6120 dfpo2 6302 predtrss 6328 tpostpos 8270 brinxper 8754 erinxp 8819 sbthcl 9125 infxpenlem 10099 fpwwe2lem11 10733 fpwwe2 10735 isinv 17944 isffth2 18102 ffthf1o 18105 ffthoppc 18110 ffthres2c 18126 isunit 20612 opsrtoslem2 22374 zsoring 28804 posrasymb 33578 trleile 33582 satefvfmla1 36280 brtxp 36738 idsset 36748 dfon3 36750 elfix 36761 dffix2 36763 brcap 36798 funpartlem 36802 trer 37200 fneval 37236 brcnvin 39419 brxrn 39424 brin2 39479 br1cossinres 39578 grumnud 45379 chnrin 48014 |
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