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| Mirrors > Home > MPE Home > Th. List > lmodbn0 | Structured version Visualization version GIF version | ||
| Description: The base set of a left module is nonempty. (Contributed by NM, 8-Dec-2013.) (Revised by Mario Carneiro, 19-Jun-2014.) |
| Ref | Expression |
|---|---|
| lmodbn0.b | ⊢ 𝐵 = (Base‘𝑊) |
| Ref | Expression |
|---|---|
| lmodbn0 | ⊢ (𝑊 ∈ LMod → 𝐵 ≠ ∅) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | lmodgrp 20788 | . 2 ⊢ (𝑊 ∈ LMod → 𝑊 ∈ Grp) | |
| 2 | lmodbn0.b | . . 3 ⊢ 𝐵 = (Base‘𝑊) | |
| 3 | 2 | grpbn0 18863 | . 2 ⊢ (𝑊 ∈ Grp → 𝐵 ≠ ∅) |
| 4 | 1, 3 | syl 17 | 1 ⊢ (𝑊 ∈ LMod → 𝐵 ≠ ∅) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1540 ∈ wcel 2109 ≠ wne 2925 ∅c0 4286 ‘cfv 6486 Basecbs 17138 Grpcgrp 18830 LModclmod 20781 |
| 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 2701 ax-sep 5238 ax-nul 5248 ax-pr 5374 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-ral 3045 df-rex 3054 df-rmo 3345 df-reu 3346 df-rab 3397 df-v 3440 df-sbc 3745 df-dif 3908 df-un 3910 df-ss 3922 df-nul 4287 df-if 4479 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4862 df-br 5096 df-opab 5158 df-mpt 5177 df-id 5518 df-xp 5629 df-rel 5630 df-cnv 5631 df-co 5632 df-dm 5633 df-iota 6442 df-fun 6488 df-fv 6494 df-riota 7310 df-ov 7356 df-0g 17363 df-mgm 18532 df-sgrp 18611 df-mnd 18627 df-grp 18833 df-lmod 20783 |
| This theorem is referenced by: lmodfopnelem1 20819 lss1 20859 lmod0rng 48214 |
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