Product Description
This volume is produced from digital images created through the University of Michigan University Library's large-scale digitization efforts. The Library seeks to preserve the intellectual content of items in a manner that facilitates and promotes a variety of uses. The digital reformatting process results in an electronic version of the original text that can be both accessed online and used to create new print copies. The Library also understands and values the usefulness of print and makes reprints available to the public whenever possible. This book and hundreds of thousands of others can be found in the HathiTrust, an archive of the digitized collections of many great research libraries. For access to the University of Michigan Library's digital collections, please see http://www.lib.umich.edu and for information about the HathiTrust, please visit http://www.hathitrust.org ... Read more

Product Description
This is an EXACT reproduction of a book published before 1923. This IS NOT an OCR'd book with strange characters, introduced typographical errors, and jumbled words.This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ... Read more

Product Description
This is an EXACT reproduction of a book published before 1923. This IS NOT an OCR'd book with strange characters, introduced typographical errors, and jumbled words.This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ... Read more

Product Description
This volume is produced from digital images created through the University of Michigan University Library's large-scale digitization efforts. The Library seeks to preserve the intellectual content of items in a manner that facilitates and promotes a variety of uses. The digital reformatting process results in an electronic version of the original text that can be both accessed online and used to create new print copies. The Library also understands and values the usefulness of print and makes reprints available to the public whenever possible. This book and hundreds of thousands of others can be found in the HathiTrust, an archive of the digitized collections of many great research libraries. For access to the University of Michigan Library's digital collections, please see http://www.lib.umich.edu and for information about the HathiTrust, please visit http://www.hathitrust.org ... Read more

Product Description
This scarce antiquarian book is a selection from Kessinger Publishings Legacy Reprint Series. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment to protecting, preserving, and promoting the worlds literature. Kessinger Publishing is the place to find hundreds of thousands of rare and hard-to-find books with something of interest for everyone! ... Read more

Product Description
This is an EXACT reproduction of a book published before 1923. This IS NOT an OCR'd book with strange characters, introduced typographical errors, and jumbled words.This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ... Read more

Product Description
Examines various attempts to prove Euclid’s parallel postulate—by the Greeks, Arabs and Renaissance mathematicians. Ranging through the 17th, 18th, and 19th centuries, it considers forerunners and founders such as Saccheri, Lambert, Legendre, W. Bolyai, Gauss, Schweikart, Taurinus, J. Bolyai and Lobachewsky.
... Read more

Customer Reviews (1)

A very old classic
In Einstein's day this might have been a very good read! It is very well written. It is like reading a Spanish concurrent to Russell. A little reading finds it is a translation of a 1912 text. With general Relativity being a product of the understanding of the velocity based non Euclidean geometry of Lorentz who based his work on Poincare who based his work on Klein who based his work on... you see that history is important in an axiomaticdevelopment like this has been! But for a modern student of geometry, this book is much like buying a copy of Euclid's book on geometry: a reference that might help with understanding, but is so far out of date that it can be very little help in current problem! ... Read more

Product Description
Chapters: Judah Leon Abravanel, Judah Monis, Federigo Enriques, Giovanna Almeida Leto. Source: Wikipedia. Pages: 27. Not illustrated. Free updates online. Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: Judah Leon Abravanel (or Abrabanel, otherwise known as: in Latin, Leo Hebraeus; in Portuguese, Leão Hebreu; in Spanish, León Hebreo; in Italian, Leone Ebreo; in English, Leo the Hebrew; and in Hebrew, ) (c. 1465 - c. 1523) was a Jewish Portuguese physician, poet and philosopher. His work Dialoghi d'amore (Dialogues of Love) was one of the most important philosophical works of his time. He was born of Castilian Jewish heritage in Lisbon, and wrote his most important work in Italian. The Abravanel family was an extraordinarily prominent one among Jewish families in the Middle Ages, active in public service in the court of Castile. Judah (or Leon, as he is known in Spanish) was the son of Isaac ben Judah Abravanel, (meaning Isaac son of Judah Abravenel) who, according to Soria was the last great commentator of the Bible of Medieval Jewry (12). Dom Isaac was a statesman, financier, and a defender of the Jewish faith, who was also born in Lisbon in 1437 and spent most of his life in Portugal, eventually becoming a financial advisor to King Afonso V. However, in 1481, King Afonso V died, and Dom Isaac was suspected of conspiring to enthrone the Duke of Braganza, whom he had befriended earlier, over the son of Afonso, João II. Consequently, he had to flee without his family from Portugal to Seville, Castile finally settling in Toledo. Dom Isaac eventually took refuge from his financial and political dealings in his other loveliteraturewhile living with his reunited family in Toledo. Spain had recently seen the marriage of Isabel de Castilla and Fernando de Aragón, the Catholic Monarchs. Under their rule began the centralization of po...More: http://booksllc.net/?id=1253470 ... Read more

Product Description
This scarce antiquarian book is a selection from Kessinger Publishing's Legacy Reprint Series. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment to protecting, preserving, and promoting the world's literature. Kessinger Publishing is the place to find hundreds of thousands of rare and hard-to-find books with something of interest for everyone! ... Read more

Product Description
This volume is produced from digital images created through the University of Michigan University Library's large-scale digitization efforts. The Library seeks to preserve the intellectual content of items in a manner that facilitates and promotes a variety of uses. The digital reformatting process results in an electronic version of the original text that can be both accessed online and used to create new print copies. The Library also understands and values the usefulness of print and makes reprints available to the public whenever possible. This book and hundreds of thousands of others can be found in the HathiTrust, an archive of the digitized collections of many great research libraries. For access to the University of Michigan Library's digital collections, please see http://www.lib.umich.edu and for information about the HathiTrust, please visit http://www.hathitrust.org ... Read more