Theorem grpcld 18832

Description: Closure of the operation of a group. (Contributed by SN, 29-Jul-2024.)

Hypotheses

Ref	Expression
grpcld.b	⊢ 𝐵 = (Base‘𝐺)
grpcld.p	⊢ + = (+g‘𝐺)
grpcld.r	⊢ (𝜑 → 𝐺 ∈ Grp)
grpcld.x	⊢ (𝜑 → 𝑋 ∈ 𝐵)
grpcld.y	⊢ (𝜑 → 𝑌 ∈ 𝐵)

Assertion

Ref	Expression
grpcld	⊢ (𝜑 → (𝑋 + 𝑌) ∈ 𝐵)

Proof of Theorem grpcld

Step	Hyp	Ref	Expression
1		grpcld.r	. 2 ⊢ (𝜑 → 𝐺 ∈ Grp)
2		grpcld.x	. 2 ⊢ (𝜑 → 𝑋 ∈ 𝐵)
3		grpcld.y	. 2 ⊢ (𝜑 → 𝑌 ∈ 𝐵)
4		grpcld.b	. . 3 ⊢ 𝐵 = (Base‘𝐺)
5		grpcld.p	. . 3 ⊢ + = (+g‘𝐺)
6	4, 5	grpcl 18826	. 2 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 + 𝑌) ∈ 𝐵)
7	1, 2, 3, 6	syl3anc 1371	1 ⊢ (𝜑 → (𝑋 + 𝑌) ∈ 𝐵)

Syntax hints:   → wi 4   = wceq 1541   ∈ wcel 2106  ‘cfv 6543  (class class class)co 7408  Basecbs 17143  +_gcplusg 17196  Grpcgrp 18818

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 5306

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-rex 3071  df-rab 3433  df-v 3476  df-sbc 3778  df-dif 3951  df-un 3953  df-in 3955  df-ss 3965  df-nul 4323  df-if 4529  df-sn 4629  df-pr 4631  df-op 4635  df-uni 4909  df-br 5149  df-iota 6495  df-fv 6551  df-ov 7411  df-mgm 18560  df-sgrp 18609  df-mnd 18625  df-grp 18821

This theorem is referenced by:  dfgrp3  18921  xpsinv  18942  xpsgrpsub  18943  nmzsubg  19044  eqger  19057  lringuplu  20313  cphpyth  24732  ghmquskerlem3  32526  evls1addd  32643  ply1degltlss  32662  evls1maprhm  32754  grpcominv1  41084  rhmmpl  41127  mplmapghm  41130  evlsmaprhm  41144  evladdval  41149  selvadd  41162  rnglidl1  46743  rngqiprngimfo  46776  rngqiprngfulem3  46788