Talk:2.3.7 subgroup: Difference between revisions
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: It seems necessary to consider the relationship with {{w|Group extension}}. (Can group extension be used in relation to 2.3.5 and 2.9.5?) ... Oh dear, there's also {{w|Retract (group theory)}}. | : It seems necessary to consider the relationship with {{w|Group extension}}. (Can group extension be used in relation to 2.3.5 and 2.9.5?) ... Oh dear, there's also {{w|Retract (group theory)}}. | ||
: Retraction seems like it could be directly used in the definition of saturation. --[[User:Dummy index|Dummy index]] ([[User talk:Dummy index|talk]]) 12:01, 23 April 2025 (UTC) | : Retraction seems like it could be directly used in the definition of saturation. --[[User:Dummy index|Dummy index]] ([[User talk:Dummy index|talk]]) 12:01, 23 April 2025 (UTC) | ||
:: That's a lot of abstraction for what is essentially very simple: extension = make bigger, restriction = make smaller. – [[User:Sintel|Sintel🎏]] ([[User_talk:Sintel|talk]]) 20:33, 23 April 2025 (UTC) | |||