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Q&A singular or plural for index entries

posted almost 9 years ago by Lauren Ipsum‭  ·  last activity 2y ago by System‭

Answer
#4: Attribution notice removed by user avatar System‭ · 2019-12-13T12:00:15Z (about 2 years ago)
Source: https://writers.stackexchange.com/a/7442
License name: CC BY-SA 3.0
License URL: https://creativecommons.org/licenses/by-sa/3.0/
#3: Initial revision by (deleted user) · 2019-12-08T02:46:14Z (about 2 years ago)
I would say it depends on how the item is discussed in the body of the book.

If a Markov chain is something referred to as a single entity, then index it as a single item. If you discuss several of them at once, or generalize (like saying "black holes have thus-and-such properties"), I'd use the plural.

#2: Attribution notice added by user avatar System‭ · 2019-12-08T02:46:14Z (about 2 years ago)
Source: https://writers.stackexchange.com/a/7442
License name: CC BY-SA 3.0
License URL: https://creativecommons.org/licenses/by-sa/3.0/
#1: Imported from external source by user avatar System‭ · 2013-03-13T18:33:37Z (almost 9 years ago)
Original score: 2