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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 2906 | . 2 ⊢ (𝐴 ∈ 𝑋 ↔ 𝐴 ∈ (𝐵 ∩ 𝐶)) |
3 | elin 4171 | . 2 ⊢ (𝐴 ∈ (𝐵 ∩ 𝐶) ↔ (𝐴 ∈ 𝐵 ∧ 𝐴 ∈ 𝐶)) | |
4 | 2, 3 | bitri 277 | 1 ⊢ (𝐴 ∈ 𝑋 ↔ (𝐴 ∈ 𝐵 ∧ 𝐴 ∈ 𝐶)) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 208 ∧ wa 398 = wceq 1537 ∈ wcel 2114 ∩ cin 3937 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-v 3498 df-in 3945 |
This theorem is referenced by: elin3 4179 opelres 5861 elpredim 6162 elpred 6163 elpredg 6164 fnres 6476 funfvima 6994 fnwelem 7827 ressuppssdif 7853 fz1isolem 13822 isabl 18912 isfld 19513 2idlcpbl 20009 qus1 20010 qusrhm 20012 isidom 20079 lmres 21910 isnvc 23306 cvslvec 23731 cvsclm 23732 iscvs 23733 cvsi 23736 ishl 23967 ply1pid 24775 rplogsum 26105 iscusgr 27202 isphg 28596 ishlo 28666 hhsscms 29057 mayete3i 29507 isogrp 30705 isofld 30877 sltres 33171 bj-elid6 34464 bj-isrvec 34577 caures 35037 iscrngo 35276 fldcrng 35284 isdmn 35334 isolat 36350 srhmsubclem1 44351 srhmsubc 44354 srhmsubcALTV 44372 |
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