What type of roots the equation has can be shown by the discriminant. The discriminant for a quadratic equation \(a{x^2} + bx + c = 0\) is \({b^2} - 4ac\). And the types of root the equation has ...

Matrix polynomials and eigenvalue problems are ... Another significant contribution to the field is the exploration of singular quadratic eigenvalue problems. These problems are particularly ...

Recent research has focused on various aspects of these polynomials, including their relationships with differential equations ... but also characterized a quadratic class of Cauchy–Stieltjes ...