| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > subsubrg2 | GIF version | ||
| Description: The set of subrings of a subring are the smaller subrings. (Contributed by Stefan O'Rear, 9-Mar-2015.) |
| Ref | Expression |
|---|---|
| subsubrg.s | ⊢ 𝑆 = (𝑅 ↾s 𝐴) |
| Ref | Expression |
|---|---|
| subsubrg2 | ⊢ (𝐴 ∈ (SubRing‘𝑅) → (SubRing‘𝑆) = ((SubRing‘𝑅) ∩ 𝒫 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | subsubrg.s | . . . 4 ⊢ 𝑆 = (𝑅 ↾s 𝐴) | |
| 2 | 1 | subsubrg 14323 | . . 3 ⊢ (𝐴 ∈ (SubRing‘𝑅) → (𝑎 ∈ (SubRing‘𝑆) ↔ (𝑎 ∈ (SubRing‘𝑅) ∧ 𝑎 ⊆ 𝐴))) |
| 3 | elin 3392 | . . . 4 ⊢ (𝑎 ∈ ((SubRing‘𝑅) ∩ 𝒫 𝐴) ↔ (𝑎 ∈ (SubRing‘𝑅) ∧ 𝑎 ∈ 𝒫 𝐴)) | |
| 4 | velpw 3663 | . . . . 5 ⊢ (𝑎 ∈ 𝒫 𝐴 ↔ 𝑎 ⊆ 𝐴) | |
| 5 | 4 | anbi2i 457 | . . . 4 ⊢ ((𝑎 ∈ (SubRing‘𝑅) ∧ 𝑎 ∈ 𝒫 𝐴) ↔ (𝑎 ∈ (SubRing‘𝑅) ∧ 𝑎 ⊆ 𝐴)) |
| 6 | 3, 5 | bitr2i 185 | . . 3 ⊢ ((𝑎 ∈ (SubRing‘𝑅) ∧ 𝑎 ⊆ 𝐴) ↔ 𝑎 ∈ ((SubRing‘𝑅) ∩ 𝒫 𝐴)) |
| 7 | 2, 6 | bitrdi 196 | . 2 ⊢ (𝐴 ∈ (SubRing‘𝑅) → (𝑎 ∈ (SubRing‘𝑆) ↔ 𝑎 ∈ ((SubRing‘𝑅) ∩ 𝒫 𝐴))) |
| 8 | 7 | eqrdv 2229 | 1 ⊢ (𝐴 ∈ (SubRing‘𝑅) → (SubRing‘𝑆) = ((SubRing‘𝑅) ∩ 𝒫 𝐴)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1398 ∈ wcel 2202 ∩ cin 3200 ⊆ wss 3201 𝒫 cpw 3656 ‘cfv 5333 (class class class)co 6028 ↾s cress 13146 SubRingcsubrg 14295 |
| 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-in1 619 ax-in2 620 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-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-cnex 8166 ax-resscn 8167 ax-1cn 8168 ax-1re 8169 ax-icn 8170 ax-addcl 8171 ax-addrcl 8172 ax-mulcl 8173 ax-addcom 8175 ax-addass 8177 ax-i2m1 8180 ax-0lt1 8181 ax-0id 8183 ax-rnegex 8184 ax-pre-ltirr 8187 ax-pre-lttrn 8189 ax-pre-ltadd 8191 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-nel 2499 df-ral 2516 df-rex 2517 df-reu 2518 df-rmo 2519 df-rab 2520 df-v 2805 df-sbc 3033 df-csb 3129 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-nul 3497 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-br 4094 df-opab 4156 df-mpt 4157 df-id 4396 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-fv 5341 df-riota 5981 df-ov 6031 df-oprab 6032 df-mpo 6033 df-pnf 8258 df-mnf 8259 df-ltxr 8261 df-inn 9186 df-2 9244 df-3 9245 df-ndx 13148 df-slot 13149 df-base 13151 df-sets 13152 df-iress 13153 df-plusg 13236 df-mulr 13237 df-0g 13404 df-mgm 13502 df-sgrp 13548 df-mnd 13563 df-subg 13820 df-mgp 13998 df-ur 14037 df-ring 14075 df-subrg 14297 |
| This theorem is referenced by: (None) |
| Copyright terms: Public domain | W3C validator |