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Mirrors > Home > MPE Home > Th. List > elin2 | Structured version Visualization version GIF version |
Description: Membership in a class defined as an intersection. (Contributed by Stefan O'Rear, 29-Mar-2015.) |
Ref | Expression |
---|---|
elin2.x | ⊢ 𝑋 = (𝐵 ∩ 𝐶) |
Ref | Expression |
---|---|
elin2 | ⊢ (𝐴 ∈ 𝑋 ↔ (𝐴 ∈ 𝐵 ∧ 𝐴 ∈ 𝐶)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elin2.x | . . 3 ⊢ 𝑋 = (𝐵 ∩ 𝐶) | |
2 | 1 | eleq2i 2693 | . 2 ⊢ (𝐴 ∈ 𝑋 ↔ 𝐴 ∈ (𝐵 ∩ 𝐶)) |
3 | elin 3796 | . 2 ⊢ (𝐴 ∈ (𝐵 ∩ 𝐶) ↔ (𝐴 ∈ 𝐵 ∧ 𝐴 ∈ 𝐶)) | |
4 | 2, 3 | bitri 264 | 1 ⊢ (𝐴 ∈ 𝑋 ↔ (𝐴 ∈ 𝐵 ∧ 𝐴 ∈ 𝐶)) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 196 ∧ wa 384 = wceq 1483 ∈ wcel 1990 ∩ cin 3573 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-v 3202 df-in 3581 |
This theorem is referenced by: elin3 3804 elpredim 5692 elpred 5693 elpredg 5694 fnres 6007 funfvima 6492 fnwelem 7292 ressuppssdif 7316 fz1isolem 13245 isabl 18197 isfld 18756 2idlcpbl 19234 qus1 19235 qusrhm 19237 isidom 19304 lmres 21104 isnvc 22499 cvslvec 22925 cvsclm 22926 iscvs 22927 ishl 23158 ply1pid 23939 rplogsum 25216 isphg 27672 ishlo 27743 hhsscms 28136 mayete3i 28587 isogrp 29702 isofld 29802 sltres 31815 caures 33556 iscrngo 33795 fldcrng 33803 isdmn 33853 opelresALTV 34031 isolat 34499 srhmsubclem1 42073 srhmsubc 42076 srhmsubcALTV 42094 |
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