Linear transformations between Hilbert spaces and the application of this theory to linear partial differential equations
Francis Joseph Murray · Transactions of the American Mathematical Society · 1935
Linear Transformations in Hilbert Space, American Mathematical Society Colloquium Publications, vol.XV, New York, 1932, also Banach, Théorie des Operations Linéaires, Warsaw, 1932.These monographs will be denoted by (S) and (B) respectively.t Annals of Mathematics, (2), vol.33 (1932), pp.294-310.We will refer to this Memoir by (N).|| Cf. (B), Chap.I, p. 23, Chap.Ill, p. 37, and Chap.VI, p. 100.* lim inf 35" is the set of points, each of which is in all but a finite number of the ("almost every")©,..