arkster: Excited dragon is excited. (Pi!)
Arkster ([personal profile] arkster) wrote2007-11-27 02:01 pm
Entry tags:

lol notation

Is Z/n actually distinct from what normal people generally refer to as Z/nZ? Munkres is being vague and I'm stalling on brainpower, so I'm going to take a grocery break and come back to the mathiness of things later. Still.

Z/nZ, people. It is not that hard.

[identity profile] khab-rmb.livejournal.com 2007-11-27 08:47 pm (UTC)(link)
They're the same. Z/n is perfectly acceptable notation; it's just Z/(n) (i.e., the ring modulo the ideal) without the parentheses, which cuts down on visual clutter. Z_n is also common, although depending on the context, you may want to stay away from Z_p for p prime.

[identity profile] arks.livejournal.com 2007-11-30 04:51 pm (UTC)(link)
Yes but... Z/nZ makes a lot more clear sense when it's out of its natural habitat. Ring/(ideal) is cute and all, but outside of its little group-theory bedroom I think it needs to wear more clothes.

wikipedia chimes in

(Anonymous) 2007-11-28 04:44 am (UTC)(link)
http://en.wikipedia.org/wiki/Wikipedia_talk:WikiProject_Mathematics/Conventions

Google Munkres Z/n math