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Theorem lindslinindimp2lem1 48934
Description: Lemma 1 for lindslinindsimp2 48939. (Contributed by AV, 25-Apr-2019.)
Hypotheses
Ref Expression
lindslinind.r 𝑅 = (Scalar‘𝑀)
lindslinind.b 𝐵 = (Base‘𝑅)
lindslinind.0 0 = (0g𝑅)
lindslinind.z 𝑍 = (0g𝑀)
lindslinind.y 𝑌 = ((invg𝑅)‘(𝑓𝑥))
lindslinind.g 𝐺 = (𝑓 ↾ (𝑆 ∖ {𝑥}))
Assertion
Ref Expression
lindslinindimp2lem1 (((𝑆𝑉𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥𝑆𝑓 ∈ (𝐵m 𝑆))) → 𝑌𝐵)
Distinct variable groups:   𝐵,𝑓   𝑓,𝑀   𝑅,𝑓,𝑥   𝑆,𝑓,𝑥   𝑓,𝑍   0 ,𝑓,𝑥
Allowed substitution hints:   𝐵(𝑥)   𝐺(𝑥,𝑓)   𝑀(𝑥)   𝑉(𝑥,𝑓)   𝑌(𝑥,𝑓)   𝑍(𝑥)

Proof of Theorem lindslinindimp2lem1
StepHypRef Expression
1 lindslinind.y . 2 𝑌 = ((invg𝑅)‘(𝑓𝑥))
2 lindslinind.r . . . . 5 𝑅 = (Scalar‘𝑀)
32lmodfgrp 20864 . . . 4 (𝑀 ∈ LMod → 𝑅 ∈ Grp)
43adantl 481 . . 3 ((𝑆𝑉𝑀 ∈ LMod) → 𝑅 ∈ Grp)
5 elmapi 8796 . . . . . 6 (𝑓 ∈ (𝐵m 𝑆) → 𝑓:𝑆𝐵)
6 ffvelcdm 7033 . . . . . . . 8 ((𝑓:𝑆𝐵𝑥𝑆) → (𝑓𝑥) ∈ 𝐵)
76a1d 25 . . . . . . 7 ((𝑓:𝑆𝐵𝑥𝑆) → (𝑆 ⊆ (Base‘𝑀) → (𝑓𝑥) ∈ 𝐵))
87ex 412 . . . . . 6 (𝑓:𝑆𝐵 → (𝑥𝑆 → (𝑆 ⊆ (Base‘𝑀) → (𝑓𝑥) ∈ 𝐵)))
95, 8syl 17 . . . . 5 (𝑓 ∈ (𝐵m 𝑆) → (𝑥𝑆 → (𝑆 ⊆ (Base‘𝑀) → (𝑓𝑥) ∈ 𝐵)))
109com13 88 . . . 4 (𝑆 ⊆ (Base‘𝑀) → (𝑥𝑆 → (𝑓 ∈ (𝐵m 𝑆) → (𝑓𝑥) ∈ 𝐵)))
11103imp 1111 . . 3 ((𝑆 ⊆ (Base‘𝑀) ∧ 𝑥𝑆𝑓 ∈ (𝐵m 𝑆)) → (𝑓𝑥) ∈ 𝐵)
12 lindslinind.b . . . 4 𝐵 = (Base‘𝑅)
13 eqid 2736 . . . 4 (invg𝑅) = (invg𝑅)
1412, 13grpinvcl 18963 . . 3 ((𝑅 ∈ Grp ∧ (𝑓𝑥) ∈ 𝐵) → ((invg𝑅)‘(𝑓𝑥)) ∈ 𝐵)
154, 11, 14syl2an 597 . 2 (((𝑆𝑉𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥𝑆𝑓 ∈ (𝐵m 𝑆))) → ((invg𝑅)‘(𝑓𝑥)) ∈ 𝐵)
161, 15eqeltrid 2840 1 (((𝑆𝑉𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥𝑆𝑓 ∈ (𝐵m 𝑆))) → 𝑌𝐵)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395  w3a 1087   = wceq 1542  wcel 2114  cdif 3886  wss 3889  {csn 4567  cres 5633  wf 6494  cfv 6498  (class class class)co 7367  m cmap 8773  Basecbs 17179  Scalarcsca 17223  0gc0g 17402  Grpcgrp 18909  invgcminusg 18910  LModclmod 20855
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2708  ax-sep 5231  ax-nul 5241  ax-pow 5307  ax-pr 5375  ax-un 7689
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2539  df-eu 2569  df-clab 2715  df-cleq 2728  df-clel 2811  df-nfc 2885  df-ne 2933  df-ral 3052  df-rex 3062  df-rmo 3342  df-reu 3343  df-rab 3390  df-v 3431  df-sbc 3729  df-csb 3838  df-dif 3892  df-un 3894  df-in 3896  df-ss 3906  df-nul 4274  df-if 4467  df-pw 4543  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4851  df-iun 4935  df-br 5086  df-opab 5148  df-mpt 5167  df-id 5526  df-xp 5637  df-rel 5638  df-cnv 5639  df-co 5640  df-dm 5641  df-rn 5642  df-res 5643  df-ima 5644  df-iota 6454  df-fun 6500  df-fn 6501  df-f 6502  df-fv 6506  df-riota 7324  df-ov 7370  df-oprab 7371  df-mpo 7372  df-1st 7942  df-2nd 7943  df-map 8775  df-0g 17404  df-mgm 18608  df-sgrp 18687  df-mnd 18703  df-grp 18912  df-minusg 18913  df-ring 20216  df-lmod 20857
This theorem is referenced by: (None)
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