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| Mirrors > Home > ILE Home > Th. List > lmodsn0 | GIF version | ||
| Description: The set of scalars in a left module is nonempty. It is also inhabited, by lmod0cl 13870. (Contributed by NM, 8-Dec-2013.) (Revised by Mario Carneiro, 19-Jun-2014.) | 
| Ref | Expression | 
|---|---|
| lmodsn0.f | ⊢ 𝐹 = (Scalar‘𝑊) | 
| lmodsn0.b | ⊢ 𝐵 = (Base‘𝐹) | 
| Ref | Expression | 
|---|---|
| lmodsn0 | ⊢ (𝑊 ∈ LMod → 𝐵 ≠ ∅) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | lmodsn0.f | . . 3 ⊢ 𝐹 = (Scalar‘𝑊) | |
| 2 | 1 | lmodfgrp 13852 | . 2 ⊢ (𝑊 ∈ LMod → 𝐹 ∈ Grp) | 
| 3 | lmodsn0.b | . . 3 ⊢ 𝐵 = (Base‘𝐹) | |
| 4 | 3 | grpbn0 13162 | . 2 ⊢ (𝐹 ∈ Grp → 𝐵 ≠ ∅) | 
| 5 | 2, 4 | syl 14 | 1 ⊢ (𝑊 ∈ LMod → 𝐵 ≠ ∅) | 
| Colors of variables: wff set class | 
| Syntax hints: → wi 4 = wceq 1364 ∈ wcel 2167 ≠ wne 2367 ∅c0 3450 ‘cfv 5258 Basecbs 12678 Scalarcsca 12758 Grpcgrp 13132 LModclmod 13843 | 
| 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 615 ax-in2 616 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-sep 4151 ax-pow 4207 ax-pr 4242 ax-un 4468 ax-cnex 7970 ax-resscn 7971 ax-1re 7973 ax-addrcl 7976 | 
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ne 2368 df-ral 2480 df-rex 2481 df-reu 2482 df-rmo 2483 df-rab 2484 df-v 2765 df-sbc 2990 df-csb 3085 df-dif 3159 df-un 3161 df-in 3163 df-ss 3170 df-nul 3451 df-pw 3607 df-sn 3628 df-pr 3629 df-op 3631 df-uni 3840 df-int 3875 df-br 4034 df-opab 4095 df-mpt 4096 df-id 4328 df-xp 4669 df-rel 4670 df-cnv 4671 df-co 4672 df-dm 4673 df-rn 4674 df-res 4675 df-iota 5219 df-fun 5260 df-fn 5261 df-fv 5266 df-riota 5877 df-ov 5925 df-inn 8991 df-2 9049 df-3 9050 df-4 9051 df-5 9052 df-6 9053 df-ndx 12681 df-slot 12682 df-base 12684 df-plusg 12768 df-mulr 12769 df-sca 12771 df-vsca 12772 df-0g 12929 df-mgm 12999 df-sgrp 13045 df-mnd 13058 df-grp 13135 df-ring 13554 df-lmod 13845 | 
| This theorem is referenced by: (None) | 
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