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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 2829 | . 2 ⊢ (𝐴 ∈ 𝑋 ↔ 𝐴 ∈ (𝐵 ∩ 𝐶)) |
| 3 | elin 3919 | . 2 ⊢ (𝐴 ∈ (𝐵 ∩ 𝐶) ↔ (𝐴 ∈ 𝐵 ∧ 𝐴 ∈ 𝐶)) | |
| 4 | 2, 3 | bitri 275 | 1 ⊢ (𝐴 ∈ 𝑋 ↔ (𝐴 ∈ 𝐵 ∧ 𝐴 ∈ 𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∧ wa 395 = wceq 1542 ∈ wcel 2114 ∩ cin 3902 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-v 3444 df-in 3910 |
| This theorem is referenced by: elin3 4160 opelres 5952 elpredgg 6280 fnres 6627 funfvima 7186 fnwelem 8083 ressuppssdif 8137 fz1isolem 14396 isabl 19725 isogrp 20065 srhmsubclem1 20622 srhmsubc 20625 isidom 20670 isfld 20685 isofld 20809 2idlelb 21220 qus1 21241 qusrhm 21243 lmres 23256 isnvc 24651 cvslvec 25093 cvsclm 25094 iscvs 25095 cvsi 25098 ishl 25330 ply1pid 26156 rplogsum 27506 ltsres 27642 iscusgr 29503 isphg 30905 ishlo 30975 hhsscms 31366 mayete3i 31816 bj-elid6 37425 bj-isrvec 37549 caures 38011 iscrngo 38247 fldcrngo 38255 isdmn 38305 isolat 39588 srhmsubcALTV 48685 |
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