Theorem sgrpcl 18613

Description: Closure of the operation of a semigroup. (Contributed by AV, 15-Feb-2025.)

Hypotheses

Ref	Expression
sgrpass.b	⊢ 𝐵 = (Base‘𝐺)
sgrpass.o	⊢ ⚬ = (+g‘𝐺)

Assertion

Ref	Expression
sgrpcl	⊢ ((𝐺 ∈ Smgrp ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 ⚬ 𝑌) ∈ 𝐵)

Proof of Theorem sgrpcl

Step	Hyp	Ref	Expression
1		sgrpmgm 18611	. 2 ⊢ (𝐺 ∈ Smgrp → 𝐺 ∈ Mgm)
2		sgrpass.b	. . 3 ⊢ 𝐵 = (Base‘𝐺)
3		sgrpass.o	. . 3 ⊢ ⚬ = (+g‘𝐺)
4	2, 3	mgmcl 18560	. 2 ⊢ ((𝐺 ∈ Mgm ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 ⚬ 𝑌) ∈ 𝐵)
5	1, 4	syl3an1 1163	1 ⊢ ((𝐺 ∈ Smgrp ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 ⚬ 𝑌) ∈ 𝐵)

Syntax hints:   → wi 4   ∧ w3a 1087   = wceq 1541   ∈ wcel 2106  ‘cfv 6540  (class class class)co 7405  Basecbs 17140  +_gcplusg 17193  Mgmcmgm 18555  Smgrpcsgrp 18605

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 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-ext 2703  ax-nul 5305

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 846  df-3an 1089  df-tru 1544  df-fal 1554  df-ex 1782  df-sb 2068  df-clab 2710  df-cleq 2724  df-clel 2810  df-ne 2941  df-ral 3062  df-rab 3433  df-v 3476  df-sbc 3777  df-dif 3950  df-un 3952  df-in 3954  df-ss 3964  df-nul 4322  df-if 4528  df-sn 4628  df-pr 4630  df-op 4634  df-uni 4908  df-br 5148  df-iota 6492  df-fv 6548  df-ov 7408  df-mgm 18557  df-sgrp 18606

This theorem is referenced by:  sgrppropd  18618  prdsplusgsgrpcl  18619  cntzsgrpcl  19192  rngpropd  46659