Euclid Euclid Euclid (; – "Eukleídēs", ; fl. 300 BC), sometimes given the name Euclid of Alexandria to distinguish him from Euclides of Megara, was a Greek mathematician, often referred to as the "founder of geometry" or the "father of geometry". He was active in Alexandria during the reign of Ptolemy I (323–283 BC). His "Elements" is one of the most influential works in the history of mathematics, serving as the main textbook for teaching mathematics (especially geometry) from the time of its publication until the late 19th or early 20th century. In the "Elements", Euclid deduced the theorems of what
The Oxford Textbook of Medicine Research in Health programme. The "Oxford Textbook of Medicine" is edited by: In total, there are 750 contributors to the textbook. The Oxford Textbook of Medicine The Oxford Textbook of Medicine is an international textbook of medicine. First published in 1983, it is now in its fifth edition. It is primarily aimed at mature physicians looking for information outside their area of particular expertise, but widely used as a reference source by medical students and doctors in training, and by others seeking authoritative accounts of the science and clinical practice of medicine. The "Oxford Textbook of Medicine" is available in