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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 2831 | . 2 ⊢ (𝐴 ∈ 𝑋 ↔ 𝐴 ∈ (𝐵 ∩ 𝐶)) |
| 3 | elin 3899 | . 2 ⊢ (𝐴 ∈ (𝐵 ∩ 𝐶) ↔ (𝐴 ∈ 𝐵 ∧ 𝐴 ∈ 𝐶)) | |
| 4 | 2, 3 | bitri 276 | 1 ⊢ (𝐴 ∈ 𝑋 ↔ (𝐴 ∈ 𝐵 ∧ 𝐴 ∈ 𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 207 ∧ wa 396 = wceq 1547 ∈ wcel 2119 ∩ cin 3882 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2711 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-tru 1550 df-ex 1787 df-sb 2074 df-clab 2718 df-cleq 2731 df-clel 2814 df-v 3433 df-in 3890 |
| This theorem is referenced by: elin3 4135 opelres 5937 elpredgg 6265 fnres 6612 funfvima 7174 fnwelem 8071 ressuppssdif 8125 fz1isolem 14414 isabl 19750 isogrp 20090 srhmsubclem1 20649 srhmsubc 20652 isidom 20697 isfld 20712 isofld 20836 2idlelb 21246 qus1 21267 qusrhm 21269 lmres 23283 isnvc 24678 cvslvec 25110 cvsclm 25111 iscvs 25112 cvsi 25115 ishl 25347 ply1pid 26166 rplogsum 27508 ltsres 27644 iscusgr 29505 isphg 30906 ishlo 30976 hhsscms 31367 mayete3i 31817 bj-elid6 37530 bj-isrvec 37654 caures 38127 iscrngo 38363 fldcrngo 38371 isdmn 38421 isolat 39704 srhmsubcALTV 48816 |
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