| 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 3242 | . 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 1397 ⊆ wss 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-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-11 1554 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-in 3206 df-ss 3213 |
| This theorem is referenced by: eqimss2 3282 uneqin 3458 ssprsseq 3835 sssnr 3836 sssnm 3837 ssprr 3839 sstpr 3840 snsspw 3847 pwpwssunieq 4059 elpwuni 4060 disjeq2 4068 disjeq1 4071 pwne 4250 pwssunim 4381 poeq2 4397 seeq1 4436 seeq2 4437 trsucss 4520 onsucelsucr 4606 xp11m 5175 funeq 5346 fnresdm 5441 fssxp 5502 ffdm 5505 fcoi1 5517 fof 5559 dff1o2 5588 fvmptss2 5721 fvmptssdm 5731 fprg 5836 dff1o6 5916 tposeq 6412 el2oss1o 6610 nntri1 6663 nntri2or2 6665 nnsseleq 6668 infnninf 7322 infnninfOLD 7323 nninfwlpoimlemg 7373 exmidontri2or 7460 frec2uzf1od 10667 hashinfuni 11038 setsresg 13119 setsslid 13132 strle1g 13188 cncnpi 14951 hmeores 15038 limcimolemlt 15387 recnprss 15410 plycoeid3 15480 0nninf 16606 nninfall 16611 |
| Copyright terms: Public domain | W3C validator |