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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 2833 | . 2 ⊢ (𝐴 ∈ 𝑋 ↔ 𝐴 ∈ (𝐵 ∩ 𝐶)) |
| 3 | elin 3900 | . 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 397 = wceq 1548 ∈ wcel 2121 ∩ cin 3883 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-ext 2713 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-tru 1551 df-ex 1788 df-sb 2075 df-clab 2720 df-cleq 2733 df-clel 2816 df-v 3435 df-in 3891 |
| This theorem is referenced by: elin3 4137 opelres 5943 elpredgg 6268 fnres 6615 funfvima 7177 fnwelem 8073 ressuppssdif 8127 fz1isolem 14418 isabl 19753 isogrp 20093 srhmsubclem1 20652 srhmsubc 20655 isidom 20700 isfld 20715 isofld 20839 2idlelb 21249 qus1 21270 qusrhm 21272 lmres 23286 isnvc 24681 cvslvec 25113 cvsclm 25114 iscvs 25115 cvsi 25118 ishl 25350 ply1pid 26169 rplogsum 27511 ltsres 27646 iscusgr 29507 isphg 30908 ishlo 30978 hhsscms 31369 mayete3i 31819 bj-elid6 37543 bj-isrvec 37667 caures 38140 iscrngo 38376 fldcrngo 38384 isdmn 38434 isolat 39717 srhmsubcALTV 48828 |
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