Task: Text Categorization
Input (English): A construction named for this man is the identity of the convolution function, and a Clifford algebra can be constructed from his namesake gamma matrices. His inference that the gravitational constant varies inversely with time is part of his large numbers hypothesis. A pair of conjugate transposes make up his (*) bra-ket notation, and a model of a vacuum as particles possessing negative energy is known as his sea. He names a set of statistics describing fermions with Fermi. For 10 points, name this physicist who names a function that is infinite at one point and zero everywhere else, his namesake delta function.
Output (English): Science