On $\left( m, n \right)$-mutant in semigroup

Right gw-Majorization on M_{n,m}

right gw-majorization on m_{n,m}

Topologically Left Invariant Mean on Dual Semigroup Algebras

Topologically left invariant means on semigroup algebras

Let M(S) be the Banach algebra of all bounded regular Borel measures on a locally compact Hausdorff semitopological semigroup S with variation norm and convolution as multiplication. We obtain necessary and sufficient conditions for M(S)∗ to have a topologically left invariant mean.

On Simple Left, Right and Two-sided Ideals of an Ordered Semigroup Having a Kernel

The intersection of all two-sided ideals of an ordered semigroup, if it is non-empty, is called the kernel of the ordered semigroup. A left ideal L of an ordered semigroup (S, ·,≤) having a kernel I is said to be simple if I is properly contained in L and for any left ideal L′ of (S, ·,≤), I is properly contained in L′ and L′ is contained in L imply L′ = L. The notions of simple right and two-s...