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Theorem slmdvacl 33555
Description: Closure of vector addition for a semiring left module. (Contributed by NM, 8-Dec-2013.) (Revised by Mario Carneiro, 19-Jun-2014.) (Revised by Thierry Arnoux, 1-Apr-2018.)
Hypotheses
Ref Expression
slmdvacl.v 𝑉 = (Base‘𝑊)
slmdvacl.a + = (+g𝑊)
Assertion
Ref Expression
slmdvacl ((𝑊 ∈ SLMod ∧ 𝑋𝑉𝑌𝑉) → (𝑋 + 𝑌) ∈ 𝑉)

Proof of Theorem slmdvacl
StepHypRef Expression
1 slmdmnd 33549 . 2 (𝑊 ∈ SLMod → 𝑊 ∈ Mnd)
2 slmdvacl.v . . 3 𝑉 = (Base‘𝑊)
3 slmdvacl.a . . 3 + = (+g𝑊)
42, 3mndcl 18821 . 2 ((𝑊 ∈ Mnd ∧ 𝑋𝑉𝑌𝑉) → (𝑋 + 𝑌) ∈ 𝑉)
51, 4syl3an1 1181 1 ((𝑊 ∈ SLMod ∧ 𝑋𝑉𝑌𝑉) → (𝑋 + 𝑌) ∈ 𝑉)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4  w3a 1103   = wceq 1570  wcel 2146  cfv 6540  (class class class)co 7416  Basecbs 17286  +gcplusg 17327  Mndcmnd 18813  SLModcslmd 33543
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2148  ax-9 2156  ax-ext 2737  ax-nul 5271
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2100  df-clab 2744  df-cleq 2757  df-clel 2840  df-ne 2961  df-ral 3082  df-rex 3092  df-rab 3419  df-v 3459  df-sbc 3747  df-dif 3909  df-un 3911  df-ss 3923  df-nul 4287  df-if 4490  df-sn 4592  df-pr 4594  df-op 4598  df-uni 4875  df-br 5112  df-iota 6496  df-fv 6548  df-ov 7419  df-mgm 18715  df-sgrp 18798  df-mnd 18814  df-cmn 19875  df-slmd 33544
This theorem is used by: (None)
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