| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > eqsstrrd | GIF version | ||
| Description: Substitution of equality into a subclass relationship. (Contributed by NM, 25-Apr-2004.) |
| Ref | Expression |
|---|---|
| eqsstrrd.1 | ⊢ (𝜑 → 𝐵 = 𝐴) |
| eqsstrrd.2 | ⊢ (𝜑 → 𝐵 ⊆ 𝐶) |
| Ref | Expression |
|---|---|
| eqsstrrd | ⊢ (𝜑 → 𝐴 ⊆ 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqsstrrd.1 | . . 3 ⊢ (𝜑 → 𝐵 = 𝐴) | |
| 2 | 1 | eqcomd 2238 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) |
| 3 | eqsstrrd.2 | . 2 ⊢ (𝜑 → 𝐵 ⊆ 𝐶) | |
| 4 | 2, 3 | eqsstrd 3274 | 1 ⊢ (𝜑 → 𝐴 ⊆ 𝐶) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1398 ⊆ wss 3211 |
| 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 2214 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-in 3217 df-ss 3224 |
| This theorem is referenced by: ssxpbm 5198 ssxp1 5199 ssxp2 5200 suppssof1 6284 tfrlemiubacc 6561 tfr1onlemubacc 6577 tfrcllemubacc 6590 oaword1 6704 phplem4dom 7116 fisseneq 7195 nnnninfeq2 7420 archnqq 7732 hashdmprop2dom 11216 imasaddfnlemg 13527 resmhm2 13701 ringidss 14173 subrg1 14376 subrgdvds 14380 subrguss 14381 subrginv 14382 islss3 14527 lspsnneg 14568 epttop 14955 metequiv2 15361 limccnpcntop 15540 limccnp2lem 15541 limccnp2cntop 15542 umgredgprv 16110 uspgrupgrushgr 16177 usgrumgruspgr 16180 nnsf 16783 |
| Copyright terms: Public domain | W3C validator |