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| Mirrors > Home > MPE Home > Th. List > obs2ss | Structured version Visualization version GIF version | ||
| Description: A basis has no proper subsets that are also bases. (Contributed by Mario Carneiro, 23-Oct-2015.) |
| Ref | Expression |
|---|---|
| obs2ss | ⊢ ((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) → 𝐶 = 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simp3 1138 | . 2 ⊢ ((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) → 𝐶 ⊆ 𝐵) | |
| 2 | eqid 2733 | . . . . 5 ⊢ (0g‘𝑊) = (0g‘𝑊) | |
| 3 | 2 | obsne0 21664 | . . . 4 ⊢ ((𝐵 ∈ (OBasis‘𝑊) ∧ 𝑥 ∈ 𝐵) → 𝑥 ≠ (0g‘𝑊)) |
| 4 | 3 | 3ad2antl1 1186 | . . 3 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → 𝑥 ≠ (0g‘𝑊)) |
| 5 | eqid 2733 | . . . . . . . 8 ⊢ (ocv‘𝑊) = (ocv‘𝑊) | |
| 6 | 5 | obselocv 21667 | . . . . . . 7 ⊢ ((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵 ∧ 𝑥 ∈ 𝐵) → (𝑥 ∈ ((ocv‘𝑊)‘𝐶) ↔ ¬ 𝑥 ∈ 𝐶)) |
| 7 | 6 | 3expa 1118 | . . . . . 6 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → (𝑥 ∈ ((ocv‘𝑊)‘𝐶) ↔ ¬ 𝑥 ∈ 𝐶)) |
| 8 | 7 | 3adantl2 1168 | . . . . 5 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → (𝑥 ∈ ((ocv‘𝑊)‘𝐶) ↔ ¬ 𝑥 ∈ 𝐶)) |
| 9 | simpl2 1193 | . . . . . . . 8 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → 𝐶 ∈ (OBasis‘𝑊)) | |
| 10 | 2, 5 | obsocv 21665 | . . . . . . . 8 ⊢ (𝐶 ∈ (OBasis‘𝑊) → ((ocv‘𝑊)‘𝐶) = {(0g‘𝑊)}) |
| 11 | 9, 10 | syl 17 | . . . . . . 7 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → ((ocv‘𝑊)‘𝐶) = {(0g‘𝑊)}) |
| 12 | 11 | eleq2d 2819 | . . . . . 6 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → (𝑥 ∈ ((ocv‘𝑊)‘𝐶) ↔ 𝑥 ∈ {(0g‘𝑊)})) |
| 13 | elsni 4592 | . . . . . 6 ⊢ (𝑥 ∈ {(0g‘𝑊)} → 𝑥 = (0g‘𝑊)) | |
| 14 | 12, 13 | biimtrdi 253 | . . . . 5 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → (𝑥 ∈ ((ocv‘𝑊)‘𝐶) → 𝑥 = (0g‘𝑊))) |
| 15 | 8, 14 | sylbird 260 | . . . 4 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → (¬ 𝑥 ∈ 𝐶 → 𝑥 = (0g‘𝑊))) |
| 16 | 15 | necon1ad 2946 | . . 3 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → (𝑥 ≠ (0g‘𝑊) → 𝑥 ∈ 𝐶)) |
| 17 | 4, 16 | mpd 15 | . 2 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → 𝑥 ∈ 𝐶) |
| 18 | 1, 17 | eqelssd 3952 | 1 ⊢ ((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) → 𝐶 = 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1086 = wceq 1541 ∈ wcel 2113 ≠ wne 2929 ⊆ wss 3898 {csn 4575 ‘cfv 6486 0gc0g 17345 ocvcocv 21599 OBasiscobs 21641 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-rep 5219 ax-sep 5236 ax-nul 5246 ax-pow 5305 ax-pr 5372 ax-un 7674 ax-cnex 11069 ax-resscn 11070 ax-1cn 11071 ax-icn 11072 ax-addcl 11073 ax-addrcl 11074 ax-mulcl 11075 ax-mulrcl 11076 ax-mulcom 11077 ax-addass 11078 ax-mulass 11079 ax-distr 11080 ax-i2m1 11081 ax-1ne0 11082 ax-1rid 11083 ax-rnegex 11084 ax-rrecex 11085 ax-cnre 11086 ax-pre-lttri 11087 ax-pre-lttrn 11088 ax-pre-ltadd 11089 ax-pre-mulgt0 11090 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2882 df-ne 2930 df-nel 3034 df-ral 3049 df-rex 3058 df-rmo 3347 df-reu 3348 df-rab 3397 df-v 3439 df-sbc 3738 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4283 df-if 4475 df-pw 4551 df-sn 4576 df-pr 4578 df-op 4582 df-uni 4859 df-int 4898 df-iun 4943 df-br 5094 df-opab 5156 df-mpt 5175 df-tr 5201 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-pred 6253 df-ord 6314 df-on 6315 df-lim 6316 df-suc 6317 df-iota 6442 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-fv 6494 df-riota 7309 df-ov 7355 df-oprab 7356 df-mpo 7357 df-om 7803 df-1st 7927 df-2nd 7928 df-tpos 8162 df-frecs 8217 df-wrecs 8248 df-recs 8297 df-rdg 8335 df-er 8628 df-map 8758 df-en 8876 df-dom 8877 df-sdom 8878 df-pnf 11155 df-mnf 11156 df-xr 11157 df-ltxr 11158 df-le 11159 df-sub 11353 df-neg 11354 df-nn 12133 df-2 12195 df-3 12196 df-4 12197 df-5 12198 df-6 12199 df-7 12200 df-8 12201 df-sets 17077 df-slot 17095 df-ndx 17107 df-base 17123 df-plusg 17176 df-mulr 17177 df-sca 17179 df-vsca 17180 df-ip 17181 df-0g 17347 df-mgm 18550 df-sgrp 18629 df-mnd 18645 df-mhm 18693 df-grp 18851 df-minusg 18852 df-sbg 18853 df-ghm 19127 df-cmn 19696 df-abl 19697 df-mgp 20061 df-rng 20073 df-ur 20102 df-ring 20155 df-oppr 20257 df-dvdsr 20277 df-unit 20278 df-rhm 20392 df-drng 20648 df-staf 20756 df-srng 20757 df-lmod 20797 df-lss 20867 df-lsp 20907 df-lmhm 20958 df-lvec 21039 df-sra 21109 df-rgmod 21110 df-phl 21565 df-ocv 21602 df-obs 21644 |
| This theorem is referenced by: (None) |
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