00:01
In this question, we need to show that the ring denoted by r plus with the operation defined as the addition and the multiplication, it is an integral domain.
00:19
This is what we have to prove.
00:21
Integral domain operation is defined as a plus b is defined as ab and a dot b is defined as a raised to log of b.
00:40
So let us check how we are going to prove this.
00:44
So first of all, we prove that it is abelian.
00:48
So to show that r plus is an abelian group, so i take let abc belongs to r plus then a plus b plus c.
01:09
This is not usual addition, just we are denoting.
01:13
So this is ab plus c and this will be abc according to the operation and if i consider a plus b plus c, then i will get a plus bc which is again abc.
01:31
So we can prove that this is associated.
01:37
Next property, let us check, let ab belongs to r plus then a plus b is equals to ab, it is same as ba which will be b plus a...