A mathematician's a person whose primary area of study and/or research's the field of mathematics. Problems in Mathematics The publication of new discoveries in mathematics continues at an immense rate in hundreds of scientific journals. One of the most exciting recent developments was the proof of Fermat's Last Theorem by Andrew Wiles, following 350 years of the brightest mathematical minds attempting to settle the problem. There're many famous open problems in mathematics, many dating back… (More on Mathematician)