Talk:08-401: Difference between revisions

Revision as of 15:28, 27 January 2008

something i still unclear on ideal test..

since there are two conditons in ideal test 1. a-b in A whenever a, b in A 2.ra and ar are in A whenever a in A and r in A

i just wonder when i use the ideal test, i need to use both condtions together

or just use one of both , then i can conclude a nonempty subset of a ring R is an ideal of R

thx

I would think both need to be satisfied. Sorin.c

thx so much

now, i have a tiny question, is the Z/n equal to Z_n? are they the same thing.

because the textbook give us the symbol " Z_n", and the lecture notes give us " Z/n"

there is any difference? BY the way, i just uploaded a picture , just follow the link please:

There is no difference. Dror said he prefers writing $\mathbb {Z} /n$ instead of $\mathbb {Z} _{n}$ . --Sorin.c 15:28, 27 January 2008 (EST)

@@ Line 23: / Line 23: @@
 http://katlas.math.toronto.edu/drorbn/index.php?title=Image:08-401.jpg
-There is no difference. [[User:Drorbn|Dror]] said he prefers writing <math>\mathbb Z/n</math> instead of <math>\mathbb Z_n</math>. [[User:Sorin.c|Sorin.c]]
+There is no difference. [[User:Drorbn|Dror]] said he prefers writing <math>\mathbb Z/n</math> instead of <math>\mathbb Z_n</math>.
+--[[User:Sorin.c|Sorin.c]] 15:28, 27 January 2008 (EST)