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| Mirrors > Home > ILE Home > Th. List > ineq2d | GIF version | ||
| Description: Equality deduction for intersection of two classes. (Contributed by NM, 10-Apr-1994.) |
| Ref | Expression |
|---|---|
| ineq1d.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| Ref | Expression |
|---|---|
| ineq2d | ⊢ (𝜑 → (𝐶 ∩ 𝐴) = (𝐶 ∩ 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ineq1d.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 2 | ineq2 3404 | . 2 ⊢ (𝐴 = 𝐵 → (𝐶 ∩ 𝐴) = (𝐶 ∩ 𝐵)) | |
| 3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → (𝐶 ∩ 𝐴) = (𝐶 ∩ 𝐵)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1398 ∩ cin 3200 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-v 2805 df-in 3207 |
| This theorem is referenced by: disjpr2 3737 rint0 3972 riin0 4047 disji2 4085 xpriindim 4874 riinint 4999 reseq2 5014 csbresg 5022 resindm 5061 isoselem 5971 zfz1isolem1 11150 fsumm1 12040 bitsinv1 12586 ennnfonelemhf1o 13097 nninfdclemcl 13132 nninfdclemp1 13134 nninfdc 13137 ressvalsets 13210 ressbasd 13213 ressinbasd 13220 ressressg 13221 restval 13391 mgpress 14008 subrngpropd 14294 subrgpropd 14331 crng2idl 14610 basis1 14841 baspartn 14844 eltg 14846 tgdom 14866 ntrval 14904 resttopon2 14972 restopnb 14975 qtopbasss 15315 p1evtxdeqfilem 16235 |
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