| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > eqimss | GIF version | ||
| Description: Equality implies the subclass relation. (Contributed by NM, 5-Aug-1993.) (Proof shortened by Andrew Salmon, 21-Jun-2011.) |
| Ref | Expression |
|---|---|
| eqimss | ⊢ (𝐴 = 𝐵 → 𝐴 ⊆ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqss 3257 | . 2 ⊢ (𝐴 = 𝐵 ↔ (𝐴 ⊆ 𝐵 ∧ 𝐵 ⊆ 𝐴)) | |
| 2 | 1 | simplbi 274 | 1 ⊢ (𝐴 = 𝐵 → 𝐴 ⊆ 𝐵) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1398 ⊆ wss 3214 |
| 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-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-11 1555 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2216 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-in 3220 df-ss 3227 |
| This theorem is referenced by: eqimss2 3297 uneqin 3476 ssprsseq 3861 sssnr 3862 sssnm 3863 ssprr 3865 sstpr 3866 snsspw 3873 pwpwssunieq 4085 elpwuni 4086 disjeq2 4094 disjeq1 4097 pwne 4278 pwssunim 4410 poeq2 4426 seeq1 4465 seeq2 4466 trsucss 4549 onsucelsucr 4635 xp11m 5206 funeq 5377 fnresdm 5472 fssxp 5535 ffdm 5538 fcoi1 5552 fof 5595 dff1o2 5624 fvmptss2 5757 fvmptssdm 5767 fprg 5872 dff1o6 5955 tposeq 6491 el2oss1o 6689 nntri1 6742 nntri2or2 6744 nnsseleq 6747 infnninf 7428 infnninfOLD 7429 nninfwlpoimlemg 7479 exmidontri2or 7566 frec2uzf1od 10792 hashinfuni 11165 setsresg 13334 setsslid 13347 strle1g 13403 cncnpi 15219 hmeores 15306 limcimolemlt 15655 recnprss 15678 plycoeid3 15748 0nninf 16908 nninfall 16913 |
| Copyright terms: Public domain | W3C validator |