| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > trivsubgsnd | GIF version | ||
| Description: The only subgroup of a trivial group is itself. (Contributed by Rohan Ridenour, 3-Aug-2023.) |
| Ref | Expression |
|---|---|
| trivsubgsnd.1 | ⊢ 𝐵 = (Base‘𝐺) |
| trivsubgsnd.2 | ⊢ 0 = (0g‘𝐺) |
| trivsubgsnd.3 | ⊢ (𝜑 → 𝐺 ∈ Grp) |
| trivsubgsnd.4 | ⊢ (𝜑 → 𝐵 = { 0 }) |
| Ref | Expression |
|---|---|
| trivsubgsnd | ⊢ (𝜑 → (SubGrp‘𝐺) = {𝐵}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | trivsubgsnd.1 | . . . . . 6 ⊢ 𝐵 = (Base‘𝐺) | |
| 2 | trivsubgsnd.2 | . . . . . 6 ⊢ 0 = (0g‘𝐺) | |
| 3 | trivsubgsnd.3 | . . . . . . 7 ⊢ (𝜑 → 𝐺 ∈ Grp) | |
| 4 | 3 | adantr 276 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (SubGrp‘𝐺)) → 𝐺 ∈ Grp) |
| 5 | trivsubgsnd.4 | . . . . . . 7 ⊢ (𝜑 → 𝐵 = { 0 }) | |
| 6 | 5 | adantr 276 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (SubGrp‘𝐺)) → 𝐵 = { 0 }) |
| 7 | simpr 110 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (SubGrp‘𝐺)) → 𝑥 ∈ (SubGrp‘𝐺)) | |
| 8 | 1, 2, 4, 6, 7 | trivsubgd 14001 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (SubGrp‘𝐺)) → 𝑥 = 𝐵) |
| 9 | velsn 3711 | . . . . 5 ⊢ (𝑥 ∈ {𝐵} ↔ 𝑥 = 𝐵) | |
| 10 | 8, 9 | sylibr 134 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (SubGrp‘𝐺)) → 𝑥 ∈ {𝐵}) |
| 11 | 10 | ex 115 | . . 3 ⊢ (𝜑 → (𝑥 ∈ (SubGrp‘𝐺) → 𝑥 ∈ {𝐵})) |
| 12 | 11 | ssrdv 3248 | . 2 ⊢ (𝜑 → (SubGrp‘𝐺) ⊆ {𝐵}) |
| 13 | 1 | subgid 13976 | . . . 4 ⊢ (𝐺 ∈ Grp → 𝐵 ∈ (SubGrp‘𝐺)) |
| 14 | 3, 13 | syl 14 | . . 3 ⊢ (𝜑 → 𝐵 ∈ (SubGrp‘𝐺)) |
| 15 | 14 | snssd 3844 | . 2 ⊢ (𝜑 → {𝐵} ⊆ (SubGrp‘𝐺)) |
| 16 | 12, 15 | eqssd 3259 | 1 ⊢ (𝜑 → (SubGrp‘𝐺) = {𝐵}) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1398 ∈ wcel 2205 {csn 3694 ‘cfv 5357 Basecbs 13296 0gc0g 13553 Grpcgrp 13797 SubGrpcsubg 13968 |
| 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 2207 ax-14 2208 ax-ext 2216 ax-coll 4230 ax-sep 4233 ax-pow 4292 ax-pr 4327 ax-un 4559 ax-setind 4664 ax-cnex 8234 ax-resscn 8235 ax-1cn 8236 ax-1re 8237 ax-icn 8238 ax-addcl 8239 ax-addrcl 8240 ax-mulcl 8241 ax-addcom 8243 ax-addass 8245 ax-i2m1 8248 ax-0lt1 8249 ax-0id 8251 ax-rnegex 8252 ax-pre-ltirr 8255 ax-pre-ltadd 8259 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-nel 2510 df-ral 2527 df-rex 2528 df-reu 2529 df-rmo 2530 df-rab 2531 df-v 2817 df-sbc 3046 df-csb 3142 df-dif 3216 df-un 3218 df-in 3220 df-ss 3227 df-nul 3513 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-int 3955 df-iun 3998 df-br 4115 df-opab 4177 df-mpt 4178 df-id 4419 df-xp 4760 df-rel 4761 df-cnv 4762 df-co 4763 df-dm 4764 df-rn 4765 df-res 4766 df-ima 4767 df-iota 5317 df-fun 5359 df-fn 5360 df-f 5361 df-f1 5362 df-fo 5363 df-f1o 5364 df-fv 5365 df-riota 6011 df-ov 6061 df-oprab 6062 df-mpo 6063 df-pnf 8326 df-mnf 8327 df-ltxr 8329 df-inn 9255 df-2 9313 df-ndx 13299 df-slot 13300 df-base 13302 df-sets 13303 df-iress 13304 df-plusg 13387 df-0g 13555 df-mgm 13653 df-sgrp 13699 df-mnd 13714 df-grp 13800 df-minusg 13801 df-subg 13971 |
| This theorem is referenced by: trivnsgd 14018 |
| Copyright terms: Public domain | W3C validator |