Generalized inverses extend the notion of the classical matrix inverse to singular or non-square matrices, enabling solutions of linear systems that lack unique or direct inverses. By relaxing one or ...

Special number sequences—such as Fibonacci, Lucas, Horadam and Jacobsthal families—exhibit rich algebraic structures that underpin a broad spectrum of mathematical theory and application. At their ...

Inside the symmetries of a crystal shape, a postdoctoral researcher has unearthed a counterexample to a basic conjecture about multiplicative inverses. “I’m nearly at the end of the talk, and it’s ...