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Theorem slmdacl 33303
Description: Closure of ring addition for a semimodule. (Contributed by Thierry Arnoux, 1-Apr-2018.)
Hypotheses
Ref Expression
slmdacl.f 𝐹 = (Scalar‘𝑊)
slmdacl.k 𝐾 = (Base‘𝐹)
slmdacl.p + = (+g𝐹)
Assertion
Ref Expression
slmdacl ((𝑊 ∈ SLMod ∧ 𝑋𝐾𝑌𝐾) → (𝑋 + 𝑌) ∈ 𝐾)

Proof of Theorem slmdacl
StepHypRef Expression
1 slmdacl.f . . . 4 𝐹 = (Scalar‘𝑊)
21slmdsrg 33301 . . 3 (𝑊 ∈ SLMod → 𝐹 ∈ SRing)
3 srgmnd 20137 . . 3 (𝐹 ∈ SRing → 𝐹 ∈ Mnd)
42, 3syl 17 . 2 (𝑊 ∈ SLMod → 𝐹 ∈ Mnd)
5 slmdacl.k . . 3 𝐾 = (Base‘𝐹)
6 slmdacl.p . . 3 + = (+g𝐹)
75, 6mndcl 18679 . 2 ((𝐹 ∈ Mnd ∧ 𝑋𝐾𝑌𝐾) → (𝑋 + 𝑌) ∈ 𝐾)
84, 7syl3an1 1164 1 ((𝑊 ∈ SLMod ∧ 𝑋𝐾𝑌𝐾) → (𝑋 + 𝑌) ∈ 𝐾)
Colors of variables: wff setvar class
Syntax hints:  wi 4  w3a 1087   = wceq 1542  wcel 2114  cfv 6500  (class class class)co 7368  Basecbs 17148  +gcplusg 17189  Scalarcsca 17192  Mndcmnd 18671  SRingcsrg 20133  SLModcslmd 33294
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-ext 2709  ax-nul 5253
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-sb 2069  df-clab 2716  df-cleq 2729  df-clel 2812  df-ne 2934  df-ral 3053  df-rex 3063  df-rab 3402  df-v 3444  df-sbc 3743  df-dif 3906  df-un 3908  df-ss 3920  df-nul 4288  df-if 4482  df-sn 4583  df-pr 4585  df-op 4589  df-uni 4866  df-br 5101  df-iota 6456  df-fv 6508  df-ov 7371  df-mgm 18577  df-sgrp 18656  df-mnd 18672  df-cmn 19723  df-srg 20134  df-slmd 33295
This theorem is referenced by: (None)
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