Unbounded Self-adjoint Operators on Hilbert Space - 9789400747524

Principles of Mathematical Logic by D. Hilbert and W. Ackermann 1950 HC/Vintage

Expulsion Book Introduction To Operator Algebra - From Hilbert Space Von Neumann

Linear Operators In Hilbert Space Hardcover Mathematics Akheizer Glazman 1961

Hilbert & Cohn-Vossen: Geometry and the Imagination (1952, Hardcover)

Principles of Mathematical Logic By D Hilbert and W Ackermann

Approximation of Hilbert Space Operators Vol 2. Apostol et.al.

Theories of Engineering Experimentation by Hilbert Schenck (1961 Hardcover)