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Theorem lsp0 20922

Description: Span of the empty set. (Contributed by Mario Carneiro, 5-Sep-2014.)

**Hypotheses**
Ref	Expression
lspsn0.z	⊢ 0 = (0_g‘𝑊)
lspsn0.n	⊢ 𝑁 = (LSpan‘𝑊)

**Assertion**
Ref	Expression
lsp0	⊢ (𝑊 ∈ LMod → (𝑁‘∅) = { 0 })

**Proof of Theorem lsp0**
Step	Hyp	Ref	Expression
1		lspsn0.z	. . . 4 ⊢ 0 = (0_g‘𝑊)
2		eqid 2730	. . . 4 ⊢ (LSubSp‘𝑊) = (LSubSp‘𝑊)
3	1, 2	lsssn0 20861	. . 3 ⊢ (𝑊 ∈ LMod → { 0 } ∈ (LSubSp‘𝑊))
4		0ss 4366	. . . 4 ⊢ ∅ ⊆ { 0 }
5		lspsn0.n	. . . . 5 ⊢ 𝑁 = (LSpan‘𝑊)
6	2, 5	lspssp 20901	. . . 4 ⊢ ((𝑊 ∈ LMod ∧ { 0 } ∈ (LSubSp‘𝑊) ∧ ∅ ⊆ { 0 }) → (𝑁‘∅) ⊆ { 0 })
7	4, 6	mp3an3 1452	. . 3 ⊢ ((𝑊 ∈ LMod ∧ { 0 } ∈ (LSubSp‘𝑊)) → (𝑁‘∅) ⊆ { 0 })
8	3, 7	mpdan 687	. 2 ⊢ (𝑊 ∈ LMod → (𝑁‘∅) ⊆ { 0 })
9		0ss 4366	. . . 4 ⊢ ∅ ⊆ (Base‘𝑊)
10		eqid 2730	. . . . 5 ⊢ (Base‘𝑊) = (Base‘𝑊)
11	10, 2, 5	lspcl 20889	. . . 4 ⊢ ((𝑊 ∈ LMod ∧ ∅ ⊆ (Base‘𝑊)) → (𝑁‘∅) ∈ (LSubSp‘𝑊))
12	9, 11	mpan2 691	. . 3 ⊢ (𝑊 ∈ LMod → (𝑁‘∅) ∈ (LSubSp‘𝑊))
13	1, 2	lss0ss 20862	. . 3 ⊢ ((𝑊 ∈ LMod ∧ (𝑁‘∅) ∈ (LSubSp‘𝑊)) → { 0 } ⊆ (𝑁‘∅))
14	12, 13	mpdan 687	. 2 ⊢ (𝑊 ∈ LMod → { 0 } ⊆ (𝑁‘∅))
15	8, 14	eqssd 3967	1 ⊢ (𝑊 ∈ LMod → (𝑁‘∅) = { 0 })

Colors of variables: wff setvar class

Syntax hints: → wi 4 = wceq 1540 ∈ wcel 2109 ⊆ wss 3917 ∅c0 4299 {csn 4592 ‘cfv 6514 Basecbs 17186 0_gc0g 17409 LModclmod 20773 LSubSpclss 20844 LSpanclspn 20884

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-frecs 8263 df-wrecs 8294 df-recs 8343 df-rdg 8381 df-er 8674 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-sets 17141 df-slot 17159 df-ndx 17171 df-base 17187 df-plusg 17240 df-0g 17411 df-mgm 18574 df-sgrp 18653 df-mnd 18669 df-grp 18875 df-minusg 18876 df-sbg 18877 df-cmn 19719 df-abl 19720 df-mgp 20057 df-rng 20069 df-ur 20098 df-ring 20151 df-lmod 20775 df-lss 20845 df-lsp 20885

This theorem is referenced by: lspuni0 20923 lss0v 20930 lspsnat 21062 lsppratlem3 21066 ocvz 21594 lindssn 33356 lvecdim0i 33608 lbslsat 33619

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