مشخصات پژوهش

عنوان	A numerical comparison of two minimal residual methods for linear polynomials in unitary matrices
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Krylov subspace methods, minimal residual methods, normal matrices, unitary matrices
چکیده	Two minimal residual methods for solving linear systems of the form $(\alpha U+\beta I)x=b$ where $U$ is a unitary matrix, are compared numerically. The first method uses conventional Krylov subspaces, while the second involves generalized Krylov subspaces. Experiments favor the second method if $|\alpha|>|\beta|$. Moreover, the greater the ratio $|\alpha|/|\beta|$, the higher the superiority of the second method.
پژوهشگران	منصور دانا (نفر اول)، خ. د ایکراموف (نفر دوم)