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Theorem bj-grpssmndel 37952
Description: Groups are monoids (elemental version). Shorter proof of grpmnd 19031. (Contributed by BJ, 5-Jan-2024.) (Proof modification is discouraged.)
Assertion
Ref Expression
bj-grpssmndel (𝐴 ∈ Grp → 𝐴 ∈ Mnd)

Proof of Theorem bj-grpssmndel
StepHypRef Expression
1 bj-grpssmnd 37951 . 2 Grp ⊆ Mnd
21sseli 3934 1 (𝐴 ∈ Grp → 𝐴 ∈ Mnd)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4  wcel 2146  Mndcmnd 18814  Grpcgrp 19024
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2148  ax-9 2156  ax-ext 2737
This proof depends on definitions:  df-bi 210  df-an 402  df-ex 1813  df-sb 2100  df-clab 2744  df-cleq 2757  df-clel 2840  df-rab 3419  df-ss 3923  df-grp 19027
This theorem is used by: (None)
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