No. For instance in R, which is commutative, we have the ideals (2) and (4), where (4) is strictly contained in (2), which is not R. Therefore the ideal (4) is not a maximal ideal.
wedderburn's little theorem says all finite division rings are commutative so they are fields. So if it is a finite division ring, then the answer is NO But for an infinite division ring... I think you can!
A field is a commutative ring in which all non zero elements have inverses or all the elements are units
correct.
A tree gets a new ring every year, so I suppose a tree ring equals one year.
they never meet again at the same time
Given a ring R and a proper ideal I of R(that is I ≠ R), I is called a maximal ideal of R if there exists no other proper ideal J of R so that I ⊂ J. Is that the ideal you are talking about? If so, not sure what you want to know?
To prove a ring is commutative, one must show that for any two elements of the ring their product does not depend on the order in which you multiply them. For example, if p and q are any two elements of your ring then p*q must equal q*p in order for the ring to be commutative. Note that not every ring is commutative, in some rings p*q does not equal q*p for arbitrary q and p (for example, the ring of 2x2 matrices).
Check the attached image
Nope. Take the commutative ring Z4 (the set {0,1,2,3} with modular arithmetic and multiplication). 1 is the identity element. But 2 x 2 = 4 = 0 while 2 is not the 0 element. So it's not an integral domain.
wedderburn's little theorem says all finite division rings are commutative so they are fields. So if it is a finite division ring, then the answer is NO But for an infinite division ring... I think you can!
A non-example of divisor ring of integers, a division ring or a nonzero commutative ring that has no zero divisors except 0.
If A intersection E = A where A & E belongs to some some system of sets lets say S then E is called the maximal set of S or the unit set of S.
David Dobbs has written: 'Advances in Commutative Ring Theory'
They form a commutative ring in which the primary operator is addition and the secondary operator is multiplication.
It results in maximal alpha and beta receptor activity.
A field is a commutative ring in which all non zero elements have inverses or all the elements are units
The ideal height for installing a towel ring in a bathroom is typically around 48 inches above the floor.