The Greeks made major contributions to math and science. Greek mathematicians such as Pythagoas, Euclid and Archimendes established the basic ideas about geometry and the concept of mathematical proofs to ancient Greek mathematicians. Some of the first astronomical models were developed by Ancient Greeks trying to describe planetary movement. Hippocrates is credited with being the founder of modern medicine as he established a medical school, wrote many medical treatises and conducted systematic and empirical investigation of diseases and remedies. The Hippocratic oath, a medical standard for doctors, is named after him