Doust, Ian

Ian Doust is a mathematician with a long and distinguished career in functional analysis, operator theory, and related areas. He has made significant contributions to the study of well-bounded operators, AC-operators, and functional calculus. His work often involves the interplay between operator theory and Banach space geometry, and he has published extensively in top mathematical journals such as *Journal of Functional Analysis*, *Journal of Operator Theory*, and *Studia Mathematica*. Doust has also worked on topics such as trigonometric identities, linear algebra, and computer algebra, as seen in his paper with Hirschhorn and Ho. His research has been supported by various institutions, and he has collaborated with notable mathematicians such as Berkson, Gillespie, and Cowling. He has held academic positions at institutions such as the University of New South Wales and has been involved in the supervision of graduate students. His work continues to influence current research in operator theory and functional analysis.

Ian Doust is a researcher at the University of New South Wales specializing in Functional analysis, operator theory, and distance geometry. His work explores Banach space operators, functional calculus, and properties of well-bounded operators. He investigates compact well-bounded operators, AC-operators, and their applications in Banach space geometry. Doust also examines negative type properties in metric spaces and their connections to functional analysis. His research includes spectral theorems for well-bounded operators and the study of linear systems and integral representations. His contributions span both theoretical and applied aspects of operator theory and functional analysis.