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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 2828 | . 2 ⊢ (𝐴 ∈ 𝑋 ↔ 𝐴 ∈ (𝐵 ∩ 𝐶)) |
| 3 | elin 3905 | . 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 3888 |
| 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 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2715 df-cleq 2728 df-clel 2811 df-v 3431 df-in 3896 |
| This theorem is referenced by: elin3 4146 opelres 5950 elpredgg 6278 fnres 6625 funfvima 7185 fnwelem 8081 ressuppssdif 8135 fz1isolem 14423 isabl 19759 isogrp 20099 srhmsubclem1 20654 srhmsubc 20657 isidom 20702 isfld 20717 isofld 20841 2idlelb 21251 qus1 21272 qusrhm 21274 lmres 23265 isnvc 24660 cvslvec 25092 cvsclm 25093 iscvs 25094 cvsi 25097 ishl 25329 ply1pid 26148 rplogsum 27490 ltsres 27626 iscusgr 29487 isphg 30888 ishlo 30958 hhsscms 31349 mayete3i 31799 bj-elid6 37484 bj-isrvec 37608 caures 38081 iscrngo 38317 fldcrngo 38325 isdmn 38375 isolat 39658 srhmsubcALTV 48801 |
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