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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 1156 | . 2 ⊢ ((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) → 𝐶 ⊆ 𝐵) | |
| 2 | eqid 2766 | . . . . 5 ⊢ (0g‘𝑊) = (0g‘𝑊) | |
| 3 | 2 | obsne0 21912 | . . . 4 ⊢ ((𝐵 ∈ (OBasis‘𝑊) ∧ 𝑥 ∈ 𝐵) → 𝑥 ≠ (0g‘𝑊)) |
| 4 | 3 | 3ad2antl1 1204 | . . 3 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → 𝑥 ≠ (0g‘𝑊)) |
| 5 | eqid 2766 | . . . . . . . 8 ⊢ (ocv‘𝑊) = (ocv‘𝑊) | |
| 6 | 5 | obselocv 21915 | . . . . . . 7 ⊢ ((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵 ∧ 𝑥 ∈ 𝐵) → (𝑥 ∈ ((ocv‘𝑊)‘𝐶) ↔ ¬ 𝑥 ∈ 𝐶)) |
| 7 | 6 | 3expa 1136 | . . . . . 6 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → (𝑥 ∈ ((ocv‘𝑊)‘𝐶) ↔ ¬ 𝑥 ∈ 𝐶)) |
| 8 | 7 | 3adantl2 1186 | . . . . 5 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → (𝑥 ∈ ((ocv‘𝑊)‘𝐶) ↔ ¬ 𝑥 ∈ 𝐶)) |
| 9 | simpl2 1211 | . . . . . . . 8 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → 𝐶 ∈ (OBasis‘𝑊)) | |
| 10 | 2, 5 | obsocv 21913 | . . . . . . . 8 ⊢ (𝐶 ∈ (OBasis‘𝑊) → ((ocv‘𝑊)‘𝐶) = {(0g‘𝑊)}) |
| 11 | 9, 10 | syl 18 | . . . . . . 7 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → ((ocv‘𝑊)‘𝐶) = {(0g‘𝑊)}) |
| 12 | 11 | eleq2d 2852 | . . . . . 6 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → (𝑥 ∈ ((ocv‘𝑊)‘𝐶) ↔ 𝑥 ∈ {(0g‘𝑊)})) |
| 13 | elsni 4611 | . . . . . 6 ⊢ (𝑥 ∈ {(0g‘𝑊)} → 𝑥 = (0g‘𝑊)) | |
| 14 | 12, 13 | biimtrdi 256 | . . . . 5 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → (𝑥 ∈ ((ocv‘𝑊)‘𝐶) → 𝑥 = (0g‘𝑊))) |
| 15 | 8, 14 | sylbird 263 | . . . 4 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → (¬ 𝑥 ∈ 𝐶 → 𝑥 = (0g‘𝑊))) |
| 16 | 15 | necon1ad 2978 | . . 3 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → (𝑥 ≠ (0g‘𝑊) → 𝑥 ∈ 𝐶)) |
| 17 | 4, 16 | mpd 16 | . 2 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → 𝑥 ∈ 𝐶) |
| 18 | 1, 17 | eqelssd 3961 | 1 ⊢ ((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) → 𝐶 = 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 = wceq 1570 ∈ wcel 2146 ≠ wne 2961 ⊆ wss 3908 {csn 4594 ‘cfv 6543 0gc0g 17517 ocvcocv 21847 OBasiscobs 21889 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-rep 5243 ax-sep 5262 ax-nul 5274 ax-pow 5341 ax-pr 5409 ax-un 7745 ax-cnex 11174 ax-resscn 11175 ax-1cn 11176 ax-icn 11177 ax-addcl 11178 ax-addrcl 11179 ax-mulcl 11180 ax-mulrcl 11181 ax-mulcom 11182 ax-addass 11183 ax-mulass 11184 ax-distr 11185 ax-i2m1 11186 ax-1ne0 11187 ax-1rid 11188 ax-rnegex 11189 ax-rrecex 11190 ax-cnre 11191 ax-pre-lttri 11192 ax-pre-lttrn 11193 ax-pre-ltadd 11194 ax-pre-mulgt0 11195 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-nel 3068 df-ral 3083 df-rex 3093 df-rmo 3372 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3928 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-int 4918 df-iun 4963 df-br 5115 df-opab 5179 df-mpt 5198 df-tr 5224 df-id 5561 df-eprel 5566 df-po 5574 df-so 5575 df-fr 5619 df-we 5621 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-pred 6309 df-ord 6370 df-on 6371 df-lim 6372 df-suc 6373 df-iota 6499 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7380 df-ov 7426 df-oprab 7427 df-mpo 7428 df-om 7872 df-1st 7995 df-2nd 7996 df-tpos 8231 df-frecs 8287 df-wrecs 8318 df-recs 8367 df-rdg 8406 df-er 8703 df-map 8835 df-en 8953 df-dom 8954 df-sdom 8955 df-pnf 11263 df-mnf 11264 df-xr 11265 df-ltxr 11266 df-le 11267 df-sub 11461 df-neg 11462 df-nn 12252 df-2 12321 df-3 12322 df-4 12323 df-5 12324 df-6 12325 df-7 12326 df-8 12327 df-sets 17249 df-slot 17267 df-ndx 17279 df-base 17295 df-plusg 17348 df-mulr 17349 df-sca 17351 df-vsca 17352 df-ip 17353 df-0g 17519 df-mgm 18723 df-sgrp 18806 df-mnd 18822 df-mhm 18872 df-grp 19034 df-minusg 19035 df-sbg 19036 df-ghm 19315 df-cmn 19883 df-abl 19884 df-mgp 20248 df-rng 20262 df-ur 20295 df-ring 20348 df-oppr 20452 df-dvdsr 20472 df-unit 20473 df-rhm 20587 df-drng 20866 df-staf 20979 df-srng 20980 df-lmod 21020 df-lss 21090 df-lsp 21130 df-lmhm 21180 df-lvec 21261 df-sra 21331 df-rgmod 21332 df-phl 21813 df-ocv 21850 df-obs 21892 |
| This theorem is used by: (None) |
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