Geometry Edition First (2 results)

Wraps. Condition: Very good. The first trade edition of Geometrie Und Erfahrung [Geometry and Experience] by Albert Einstein, from the collection of Einstein's English translator, Dr. Wilfrid Perrett. (illustrator). First Trade Edition. Octavo, 20pp. Publisher's original wraps, bound with two staples. Light soiling and wear on wraps, internally clean. Includes two illustrations, advertisements on verso of rear flap. Staples showing rust, some wear to edges of original wraps. (Weil, 115) (Schlipp-Shields, 143) This copy is signed by Wilfrid Perrett on the front cover. This work first appeared in the Sitzungsberichte der Preussischen Akademie der Wissenschaften, accompanied by an "author?s offprint," which was bound in orange wrappers. (Weil, 114). This work is the first separate trade edition. The recipient of this copy, Dr. Wilfrid Perrett, worked with Dr. George Barker Jeffery, to translate many of Einstein's most notable works into English. Perrett was a "distinguished German scholar," and would "overlook the literary side of the work," while Jeffery would oversee the mathematical translations. The two worked together on Das Relativit?tsprinzip [On the Relativity Principle] beginning in 1922, and numerous other works by Einstein over his career. (Jammer, 113-114).

Cloth. Condition: Fine. Dust Jacket Condition: near fine. First edition of Geometry of Einstein's Unified Field Theory by V?clav Hlavat?. (illustrator). First Edition. Octavo, xxxii, 314pp, [3]. Red cloth, title stamped on spine. Publisher's red cloth, gray topstain. Text in English. This copy appears unread. In the publisher's dust jacket, faint sunning to spine, bright illustrations, a near fine example. Translated by H. Levy from the German text. A fine example. This work by Indiana University Professor V?clav Hlavat? is based on 20 papers published by the author, based on the equations proposed by Einstein for his unified field theory. Prof. Hlavat? was able to test and prove the equations, making it possible to develop experiments to test if electromagnetism is the basis of matter, energy and gravity. Einstein corresponded frequently with Hlavat? before his death in 1955, believing that Hlavat? was one of a handful of mathematicians who could prove his theories.