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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 3915 | . 2 ⊢ (〈𝐴, 𝐵〉 ∈ (𝑅 ∩ 𝑆) ↔ (〈𝐴, 𝐵〉 ∈ 𝑅 ∧ 〈𝐴, 𝐵〉 ∈ 𝑆)) | |
| 2 | df-br 5104 | . 2 ⊢ (𝐴(𝑅 ∩ 𝑆)𝐵 ↔ 〈𝐴, 𝐵〉 ∈ (𝑅 ∩ 𝑆)) | |
| 3 | df-br 5104 | . . 3 ⊢ (𝐴𝑅𝐵 ↔ 〈𝐴, 𝐵〉 ∈ 𝑅) | |
| 4 | df-br 5104 | . . 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 2145 ∩ cin 3898 〈cop 4590 class class class wbr 5103 |
| 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 2733 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2100 df-clab 2740 df-cleq 2753 df-clel 2836 df-v 3453 df-in 3906 df-br 5104 |
| This theorem is used by: brinxp2 5729 trin2 6117 poirr2 6118 dfpo2 6298 predtrss 6324 tpostpos 8256 brinxper 8740 erinxp 8805 sbthcl 9111 infxpenlem 10085 fpwwe2lem11 10719 fpwwe2 10721 isinv 17928 isffth2 18086 ffthf1o 18089 ffthoppc 18094 ffthres2c 18110 isunit 20596 opsrtoslem2 22358 zsoring 28788 posrasymb 33521 trleile 33525 satefvfmla1 36169 brtxp 36622 idsset 36632 dfon3 36634 elfix 36645 dffix2 36647 brcap 36682 funpartlem 36686 trer 37084 fneval 37120 brcnvin 39290 brxrn 39295 brin2 39350 br1cossinres 39449 grumnud 45255 chnrin 47875 |
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