# Timeline for What use are groups, monoids, and rings in database computations?

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Mar 15 '18 at 22:08 comment Perhaps the syntactic monoid of a formal language is relevant, though it is not mentioned in the answers. Though I expect, like many answers, that it is relevant to computation in general rather than database computations.
May 23 '17 at 12:37 history edited CommunityBot
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S Aug 23 '15 at 15:10 history
Aug 23 '15 at 10:37 review
S Aug 23 '15 at 15:10
Feb 11 '13 at 23:40 answer timeline score: 3
Feb 11 '13 at 21:31 comment I would strongly dispute the contention that monoids and semi-groups are both considered 'useless theoretical constructs', as both have quite a bit of utility within mathematics itself as well, both in category theory and for modeling various other algebraic structures. What branch of mathematics do you come from that considers semigroups 'useless'?
Feb 11 '13 at 20:31 answer timeline score: 11
Feb 11 '13 at 19:38 history edited
focused the title
Feb 11 '13 at 18:36 answer timeline score: 27
Feb 11 '13 at 18:14 comment A short exchange with the author of scalding on his algebird library, on Twitter: twitter.com/posco/status/300692719561482240
Feb 11 '13 at 18:13 history edited
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Feb 11 '13 at 16:49 comment agreed, find it surprising twitter is dinking around in these areas, its rather abstract. the main idea seems to be reusable components for a Mapreduce-like system. algebird seems to have "spun off" from scalding. heres a talk on scalding. however it doesnt mention the algebraic objects. possibly they can be used as data object primitives/types for manipulation in the dataflows, which are also mapped into functional programming style....
Feb 11 '13 at 12:18 history edited
edited tags
Feb 11 '13 at 12:17 answer timeline score: 4
Feb 11 '13 at 2:54 answer timeline score: 7
Feb 11 '13 at 2:52 comment I found this nice article hon HackerNews news.ycombinator.com/item?id=5196708 "the Algebra of Algebraic Data Types"
Feb 11 '13 at 2:19 answer timeline score: 6
Feb 11 '13 at 1:14 history tweeted
Feb 10 '13 at 21:59 history asked