|  | The Cadabra system |  | 
        Cadabra is a computer algebra system for the manipulation
        of what could loosely be called tensorial expressions. It is
        aimed at, though not necessarily restricted to, theoretical
        high-energy physicists. Because of its target audience, the program's
        interface, storage system and underlying philosophy differ
        substantially from other computer algebra systems. Cadabra is
        developed by