Talk:Direct sum

Although the text refers to the direct sum of abelian groups, it does not discuss the direct sum of non-abelian groups (let alone semi-direct sums or subdirect products, etc. of same).

Although as time has gone by, I've learned enough to enjoy the "big picture" of algebra, I needed something a bit more specific when I was going around the block the first time. And category theory is still a bit far off in the mists for me.

Perhaps in this case, a "direct sum of groups" page should be added which can back link to this page, which could be retitled something like "Algebraic direct sums" or just stay "direct sums". I could make a similar comment about direct product which is currently (mostly) a "direct product of groups" page. Any thoughts? chas 19:39 7 oct 02 (UTC)