Theorem grpcld 39785

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 18191	. 2 ⊢ ((𝐺 ∈ Grp ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 + 𝑌) ∈ 𝐵)
7	1, 2, 3, 6	syl3anc 1368	1 ⊢ (𝜑 → (𝑋 + 𝑌) ∈ 𝐵)

Syntax hints:   → wi 4   = wceq 1538   ∈ wcel 2111  ‘cfv 6340  (class class class)co 7156  Basecbs 16555  +_gcplusg 16637  Grpcgrp 18183

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 1911  ax-6 1970  ax-7 2015  ax-8 2113  ax-9 2121  ax-10 2142  ax-11 2158  ax-12 2175  ax-ext 2729  ax-nul 5180

This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-fal 1551  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2557  df-eu 2588  df-clab 2736  df-cleq 2750  df-clel 2830  df-nfc 2901  df-ral 3075  df-rex 3076  df-rab 3079  df-v 3411  df-sbc 3699  df-dif 3863  df-un 3865  df-in 3867  df-ss 3877  df-nul 4228  df-sn 4526  df-pr 4528  df-op 4532  df-uni 4802  df-br 5037  df-iota 6299  df-fv 6348  df-ov 7159  df-mgm 17932  df-sgrp 17981  df-mnd 17992  df-grp 18186

This theorem is referenced by: (None)