Title: Spinor analysis,
Abstract: "Let us call the novel quantities which, in addition to the vectors and
tensors, have appeared in the quantum mechanics of the spinning electron, and
which in the case of the Lorentz group are quite differently transformed from
tensors, as spinors for short. Is there no spinor analysis that every physicist
can learn, such as tensor analysis, and with the aid of which all the possible
spinors can be formed, and secondly, all the invariant equations in which
spinors occur?" So Mr Ehrenfest asked me and the answer will be given below.