| 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 3240 | . 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 1395 ⊆ wss 3198 |
| 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 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-11 1552 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-in 3204 df-ss 3211 |
| This theorem is referenced by: eqimss2 3280 uneqin 3456 ssprsseq 3833 sssnr 3834 sssnm 3835 ssprr 3837 sstpr 3838 snsspw 3845 pwpwssunieq 4057 elpwuni 4058 disjeq2 4066 disjeq1 4069 pwne 4248 pwssunim 4379 poeq2 4395 seeq1 4434 seeq2 4435 trsucss 4518 onsucelsucr 4604 xp11m 5173 funeq 5344 fnresdm 5438 fssxp 5499 ffdm 5502 fcoi1 5514 fof 5556 dff1o2 5585 fvmptss2 5717 fvmptssdm 5727 fprg 5832 dff1o6 5912 tposeq 6408 el2oss1o 6606 nntri1 6659 nntri2or2 6661 nnsseleq 6664 infnninf 7314 infnninfOLD 7315 nninfwlpoimlemg 7365 exmidontri2or 7451 frec2uzf1od 10658 hashinfuni 11029 setsresg 13110 setsslid 13123 strle1g 13179 cncnpi 14942 hmeores 15029 limcimolemlt 15378 recnprss 15401 plycoeid3 15471 0nninf 16542 nninfall 16547 |
| Copyright terms: Public domain | W3C validator |