4 papers
Inequalities Concerning Rational Functions With Prescribed Poles
N. A. Rather, Tanveer Bhat, Danish Rashid Bhat
Let be the set of all rational functions of the type where is a polynomial of degree at most and , f…
A Note On Generalized Inequalities for the polar derivative of a polynomial
N. A. Rather, Danish Rashid Bhat, Tanveer Bhat
Let \( P(z) \) be a polynomial of degree \( n \) and . The polar derivative of \( P(z) \), denoted by \( D_αP(z) \) and is defined by $D_αP(z): = nP(z) + (α-z)…
On the location of zeros of a quaternion polynomial
N. A. Rather, Tanveer Bhat
In this paper, we are concerned with the problem of locating the zeros of polynomials of a quaternionic variable with quaternionic coefficients. We derive some new Cauchy bounds fo…
A refinement of Cauchys theorem on the zeros of quaternion polynomial
Nisar Ahmad Rather, Danish Rashid Bhat, Tanveer Bhat
In this paper, we shall present an interesting and significant refinement of a classical result of Cauchy about the moduli of the zeros of a quaternionic polynomial. As an applicat…