The Book Shed

light wear to tips, corners and edges of the book, no jacket, clean and unmarked. First printing,same date, December 1925. George David Birkhoff (1884 – 1944),who during his lifetime was considered by many to be the preeminent American mathematician. Birkhoff was one of the most important leaders in American mathematics in his generation. He wrote on the foundations of relativity and quantum mechanics, publishing (with R. E. Langer) the monograph Relativity and Modern Physics in 1923. In 1923, Birkhoff also proved that the Schwarzschild geometry is the unique spherically symmetric solution of the Einstein field equations. A consequence is that black holes are not merely a mathematical curiosity, but could result from any spherical star having sufficient mass.Most items ship with tracking numbers and (generally over $15.00) jacket protectors if applicable. Clean recycled packing material will be used when possible.