Theon (Greek: , gen.: T?????; ca. 335 – ca. 405) was a Greek scholar and mathematician who lived in Alexandria, Egypt. He edited and arranged Euclid's Elements and Ptolemy's Handy Tables, as well as writing various commentaries. Theon was the father of Hypatia who also won fame as a mathematician.
Fayyazuddin or Fayyaz Uddin, HI (Urdu: فيا ض ا لدين) (born November 10, 1930), is a Pakistani theoretical physicist and an emeritus professor of Theoretical and Mathematical Physics at National Centre for Physics and Quaid-e-Azam University, Islamabad. He is a senior scientist at the National Center for Physics where his research is engaged to the fields of quantum mechanics, particle physics, and meson physics. He is a brother of physicist Riazuddin and the student of Abdus Salam. Along with Riazuddin, he has published numerous physics papers and has co-authored the Quantum Mechanics by Fayyazuddin and Riazuddin which was published in 2000.
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