Greek contributions to Islamic world scholarship throughout the Hellenistic world, and Greek mathematics merged with Egyptian and Babylonian mathematics to give rise to a Hellenistic mathematics. The most important centre of learning during this period was Alexandria in Egypt, which attracted scholars from across the Hellenistic world, mostly Greek and Egyptian, but also Jewish, Persian, Phoenician scholars. Most of the mathematical texts written in Greek have been found in Greece, Egypt, Asia Minor, Mesopotamia, and Sicily. Byzantine science was essentially classical science. Therefore, Byzantine science was in every period closely connected with ancient-pagan philosophy, and metaphysics. Despite some opposition to pagan learning, many of the
This Is What You Came For it and cut the vocals", and also confirming her previous request for secrecy as co-songwriter. The credit has since been officially changed to "Taylor Swift" in BMI's and ASCAP's entry for the song. "This Is What You Came For" is an EDM song. Gil Kaufman of "Billboard" stated that the song is "a chilled-out, joyful club track that nods to classic Chicago house from the late 1980s and early 1990s, but with a modern, poppier flavor." The song is written in the key of A minor with a tempo of 124 beats per minute. The song follows a chord progression