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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 4096 | . 2 ⊢ (〈𝐴, 𝐵〉 ∈ (𝑅 ∩ 𝑆) ↔ (〈𝐴, 𝐵〉 ∈ 𝑅 ∧ 〈𝐴, 𝐵〉 ∈ 𝑆)) | |
| 2 | df-br 5109 | . 2 ⊢ (𝐴(𝑅 ∩ 𝑆)𝐵 ↔ 〈𝐴, 𝐵〉 ∈ (𝑅 ∩ 𝑆)) | |
| 3 | df-br 5109 | . . 3 ⊢ (𝐴𝑅𝐵 ↔ 〈𝐴, 𝐵〉 ∈ 𝑅) | |
| 4 | df-br 5109 | . . 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 2147 ∩ cin 4092 〈cop 4840 class class class wbr 5108 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-v 3456 df-in 4094 df-br 5109 |
| This theorem is used by: brinxp2 5737 trin2 6135 poirr2 6136 dfpo2 6325 predtrss 6351 tpostpos 8301 brinxper 8785 erinxp 8850 sbthcl 9156 infxpenlem 10131 fpwwe2lem11 10765 fpwwe2 10767 isinv 17985 isffth2 18143 ffthf1o 18146 ffthoppc 18151 ffthres2c 18167 isunit 20654 opsrtoslem2 22420 zsoring 28852 posrasymb 33624 trleile 33628 satefvfmla1 36398 brtxp 36857 idsset 36867 dfon3 36869 elfix 36880 dffix2 36882 brcap 36917 funpartlem 36921 trer 37319 fneval 37355 comodular 38207 brcnvin 39576 brxrn 39581 brin2 39636 br1cossinres 39735 grumnud 45531 chnrin 48179 |
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