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Theorem slmdacl 33469
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 33467 . . 3 (𝑊 ∈ SLMod → 𝐹 ∈ SRing)
3 srgmnd 20271 . . 3 (𝐹 ∈ SRing → 𝐹 ∈ Mnd)
42, 3syl 18 . 2 (𝑊 ∈ SLMod → 𝐹 ∈ Mnd)
5 slmdacl.k . . 3 𝐾 = (Base‘𝐹)
6 slmdacl.p . . 3 + = (+g𝐹)
75, 6mndcl 18799 . 2 ((𝐹 ∈ Mnd ∧ 𝑋𝐾𝑌𝐾) → (𝑋 + 𝑌) ∈ 𝐾)
84, 7syl3an1 1179 1 ((𝑊 ∈ SLMod ∧ 𝑋𝐾𝑌𝐾) → (𝑋 + 𝑌) ∈ 𝐾)
Colors of variables: wff setvar class
Syntax hints:  wi 4  w3a 1101   = wceq 1567  wcel 2149  cfv 6537  (class class class)co 7411  Basecbs 17268  +gcplusg 17309  Scalarcsca 17312  Mndcmnd 18791  SRingcsrg 20267  SLModcslmd 33460
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1822  ax-4 1836  ax-5 1937  ax-6 1994  ax-7 2035  ax-8 2151  ax-9 2159  ax-ext 2741  ax-nul 5271
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-sb 2098  df-clab 2748  df-cleq 2761  df-clel 2844  df-ne 2965  df-ral 3086  df-rex 3096  df-rab 3424  df-v 3465  df-sbc 3754  df-dif 3916  df-un 3918  df-ss 3930  df-nul 4295  df-if 4493  df-sn 4595  df-pr 4597  df-op 4601  df-uni 4877  df-br 5114  df-iota 6493  df-fv 6545  df-ov 7414  df-mgm 18697  df-sgrp 18776  df-mnd 18792  df-cmn 19851  df-srg 20268  df-slmd 33461
This theorem is referenced by: (None)
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