Author/Authors :
Nasiri ، Leila Department of Mathematics and computer science - Faculty of science - Lorestan University , Shams ، Mehdi Department of Statistics - Faculty of Mathematical Sciences - University of Kashan
Abstract :
In this paper, we establish further improvements of the Young inequality and its reverse. Then, we assert operator versions corresponding them. Moreover, an application including positive linear mappings is given. For example, if $A,Bin {mathbb B}({mathscr H})$ are two invertible positive operators such that $0begin{align*} Phi ^{2} bigg(A nabla _{nu} B+ rMm left( A^{1}+A^{1} sharp_{mu} B^{1} 2 left(A^{1} sharp_{frac{mu}{2}} B^{1} right)right)\ qquad +left(frac{nu}{mu} right) Mm bigg(A^{1}nabla_{mu} B^{1} A^{1} sharp_{mu} B^{1}bigg)bigg) \ quad leq left( frac{K(h)}{ Kleft( sqrt{{h^{’}}^{mu}},2 right)^{r^{’}}} right) ^{2} Phi^{2} (A sharp_{nu} B),end{align*}where $r=min{nu,1nu}$, $K(h)=frac{(1+h)^{2}}{4h}$, $h=frac{M}{m}$, $h^{’}=frac{M^{’}}{m^{’}}$ and $r^{’}=min{2r,12r}$. The results of this paper generalize the results of recent years.
Keywords :
Operator means , Numerical means , Kantorovich’s constant , Positive linear map