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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 2730 | . . . . 5 ⊢ (0g‘𝑊) = (0g‘𝑊) | |
| 3 | 2 | obsne0 21641 | . . . 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 2730 | . . . . . . . 8 ⊢ (ocv‘𝑊) = (ocv‘𝑊) | |
| 6 | 5 | obselocv 21644 | . . . . . . 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 21642 | . . . . . . . 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 2815 | . . . . . 6 ⊢ (((𝐵 ∈ (OBasis‘𝑊) ∧ 𝐶 ∈ (OBasis‘𝑊) ∧ 𝐶 ⊆ 𝐵) ∧ 𝑥 ∈ 𝐵) → (𝑥 ∈ ((ocv‘𝑊)‘𝐶) ↔ 𝑥 ∈ {(0g‘𝑊)})) |
| 13 | elsni 4609 | . . . . . 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 2943 | . . 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 3971 | 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 1540 ∈ wcel 2109 ≠ wne 2926 ⊆ wss 3917 {csn 4592 ‘cfv 6514 0gc0g 17409 ocvcocv 21576 OBasiscobs 21618 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-rep 5237 ax-sep 5254 ax-nul 5264 ax-pow 5323 ax-pr 5390 ax-un 7714 ax-cnex 11131 ax-resscn 11132 ax-1cn 11133 ax-icn 11134 ax-addcl 11135 ax-addrcl 11136 ax-mulcl 11137 ax-mulrcl 11138 ax-mulcom 11139 ax-addass 11140 ax-mulass 11141 ax-distr 11142 ax-i2m1 11143 ax-1ne0 11144 ax-1rid 11145 ax-rnegex 11146 ax-rrecex 11147 ax-cnre 11148 ax-pre-lttri 11149 ax-pre-lttrn 11150 ax-pre-ltadd 11151 ax-pre-mulgt0 11152 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-nel 3031 df-ral 3046 df-rex 3055 df-rmo 3356 df-reu 3357 df-rab 3409 df-v 3452 df-sbc 3757 df-csb 3866 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-pss 3937 df-nul 4300 df-if 4492 df-pw 4568 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-int 4914 df-iun 4960 df-br 5111 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5536 df-eprel 5541 df-po 5549 df-so 5550 df-fr 5594 df-we 5596 df-xp 5647 df-rel 5648 df-cnv 5649 df-co 5650 df-dm 5651 df-rn 5652 df-res 5653 df-ima 5654 df-pred 6277 df-ord 6338 df-on 6339 df-lim 6340 df-suc 6341 df-iota 6467 df-fun 6516 df-fn 6517 df-f 6518 df-f1 6519 df-fo 6520 df-f1o 6521 df-fv 6522 df-riota 7347 df-ov 7393 df-oprab 7394 df-mpo 7395 df-om 7846 df-1st 7971 df-2nd 7972 df-tpos 8208 df-frecs 8263 df-wrecs 8294 df-recs 8343 df-rdg 8381 df-er 8674 df-map 8804 df-en 8922 df-dom 8923 df-sdom 8924 df-pnf 11217 df-mnf 11218 df-xr 11219 df-ltxr 11220 df-le 11221 df-sub 11414 df-neg 11415 df-nn 12194 df-2 12256 df-3 12257 df-4 12258 df-5 12259 df-6 12260 df-7 12261 df-8 12262 df-sets 17141 df-slot 17159 df-ndx 17171 df-base 17187 df-plusg 17240 df-mulr 17241 df-sca 17243 df-vsca 17244 df-ip 17245 df-0g 17411 df-mgm 18574 df-sgrp 18653 df-mnd 18669 df-mhm 18717 df-grp 18875 df-minusg 18876 df-sbg 18877 df-ghm 19152 df-cmn 19719 df-abl 19720 df-mgp 20057 df-rng 20069 df-ur 20098 df-ring 20151 df-oppr 20253 df-dvdsr 20273 df-unit 20274 df-rhm 20388 df-drng 20647 df-staf 20755 df-srng 20756 df-lmod 20775 df-lss 20845 df-lsp 20885 df-lmhm 20936 df-lvec 21017 df-sra 21087 df-rgmod 21088 df-phl 21542 df-ocv 21579 df-obs 21621 |
| This theorem is referenced by: (None) |
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