Infinite ring with exactly two non trivial maximal ideals

LikeMath

Hey!

Is there an infinite ring with exactly two maximal ideals.

Thanks in advance
LiKeMath

micromass

What about [itex]\mathbb{R}\times\mathbb{R}[/itex]?

Erland

How is multiplication defined here?

micromass

Pointswise: [itex](a,b)\cdot (c,d)=(ac,bd)[/itex].

mathwonk

i didn't check this, but i would try to take a ring and remove a lot of ideals by inverting elements. e.g. take the integers and look at all rational numbers that do not have factors of 2 or 3 in the bottom. then presumably the only maximal ideals left are (2) and (3).

another similar construction, in the ring of all continuous functions on [0,1], invert those that do not vanish at either 0 or 1. Then presumably the only maximal ideals left are those that vanish at one of those points.

I guess this also resembles micromass's example. I.e. take all continuous functions on the 2 point set {0,1} and then you have as maximal ideals the functions that vanish at 0, namely (0,t) and those that vanish at 1, namely (t,0).