# Teachers

### Alex Perlin (Gold Medal, International Math Olympiad)

Alex Perlin grew up in St Petersburg, Russia. He has been interested in Mathematics since the age of 11. In his junior and senior years of high school, Alex Perlin both achieved the top score in the Soviet Union Math Olympiad and earned a gold medal at the International Math Olympiad. Subsequently he served on the jury of a number of Math Olympiads, contributing original problems and grading contestants' solutions. He enjoys working with students. He was a teaching assistant in two summer camps for middle school kids interested in math. While in a graduate program, he taught recitation sections in differential equations and probability and received one of the two annual teaching prizes awarded by the MIT Math Department. Alex Perlin holds a diploma with honors from St. Petersburg State University, and a Ph.D. degree in Mathematics from MIT. His field of concentration was Probability Theory. Alex has been employed by the D. E. Shaw group* as a quantitative analyst since 2001, the year he completed his graduate studies. Alex has been teaching Math-M-Addicts since 2006.

*The D. E. Shaw group is not affiliated with Math-M-Addicts.

### Alexander Krol (Master of Financial Engineering, Cornell University)

Alex Krol grew up in Chicago before moving to New York in 2000. He attended Fenwick High School in Illinois where he was captain of the math team and participated in numerous AMC and ARML math competitions. He graduated magna cum laude from Cornell with a B.S. in Electrical and Computer Engineering and a Master's in Financial Engineering. Alex has always had a passion for mathematics, puzzles, and games, and hopes to help others find joy in working through and solving interesting problems in mathematics. Alex currently works as a portfolio manager at BlackRock, a global investment management firm.

### Anna Raytcheva (First Place, National High School of Mathematics and Science Exam, Bulgaria)

Anna Raytcheva grew up in Sofia, Bulgaria. She won her first Math Olympiad when she was 12 and continued participating successfully in other National Math Olympiads. Anna enjoyed the long hours of math preparation and since then has developed a passion for problem solving. She tied for First Place in her entrance exam to the National High School of Mathematics and Science in Bulgaria. During her junior year in high school, Anna won a scholarship to study at the United World College in Duino, Italy. From there she went on to study Mathematics at Princeton University, where she began tutoring in her freshman year. After graduating with Honors in 1994, Anna entered the world of finance. She hopes to help more students discover the joy of solving math problems. Anna joined Math-M-Addicts in 2014.

### Behzad Mehrdad (Gold Medal, International Math Olympiad)

Behzad Mehrdad grew up in Tehran, Iran. He earned gold medal at the International Math Olympiad in his senior year of high school. As an undergraduate, Behzad won a Second Price (2007) and a First Prize (2008) at the International Mathematics Competition for University Students, as well as two national gold medals at an Iranian mathematical competition for undergraduate students. Behzad hopes to share his passion for mathematics and problem solving through his teaching. His experience includes a math summer camp in Iran and two classes at the Center for Mathematical Talent at Courant Institute of Mathematical Sciences at NYU.

Behzad holds a B.Sc. in Electrical Engineering and a B.Sc. in Mathematics from Sharif University of Technology, and a Ph.D. degree in Mathematics from New York University. His field of concentration was Probability Theory, and he has been working in finance since graduation in 2014.

### Bobby Lee (A.B. in Economics, Harvard University)

Bobby Lee grew up in various different cities before going to Harvard for undergrad, but views Huntsville Alabama as the town where he grew up, graduating from Grissom High School where he competed in several state and national math competitions. Bobby currently works in finance and has been teaching with Math-M-Addicts since 2016.

### David Opela (Bronze Medal, International Math Olympiad)

David Opela grew up in Ostrava, Czechoslovakia. Starting in 5th grade, he participated in, and later organized various math competitions and camps. He won the Czech Math Olympiad in 1996 and earned a bronze medal at that year's IMO in Mumbai, India. He continued studying mathematics (focusing on functional analysis) for the next 10 years at Charles University in Prague and later at Washington University in St. Louis. In August 2006, he moved to New York to join D. E. Shaw & Co., L.P.* as a quantitative analyst. David has been teaching Math-M-Addicts since 2012.

*The D. E. Shaw group is not affiliated with Math-M-Addicts.

### Fanny Chen (M.A. Statistics, Harvard University)

Fanny Chen grew up in NYC. In 2010, she coached Horace Mann’s middle school MATHCOUNTS team. She studied Economics and Statistics at Harvard, and earned an MBA from NYU Stern-Langone. She currently works in finance. Fanny allots equal space on her shelves for baking ingredients and books. Fanny joined Math-M-Addicts in 2015.

### Gil Wiechman (PhD, Electrical Engineering, Technion)

Gil Wiechman grew up in Israel where he attended Tel-Aviv University's Handesa'im Technical High School. As a high-school senior, he enjoyed playing a part in designing a new robotics course and teaching the course to freshmen students. He discovered the beauty of mathematics only as an undergraduate engineering student at Technion, Israel where he graduated summa cum laude with a B.Sc. in Computer Engineering, a B.A. in Mathematics and a Ph.D. in Electrical Engineering. Throughout his graduate studies, he served as a teaching assistant in several courses receiving the Excellence in Teaching award numerous times. He is currently employed as a quantitative developer at D. E. Shaw group*. Gil has been teaching Math-M-Addicts since 2010.

*The D. E. Shaw group is not affiliated with Math-M-Addicts.

### Kolya Malkin (PhD student, Yale University)

Kolya Malkin was born in Saint Petersburg, Russia, and grew up in Seattle. He has been interested in mathematics for as long as he can remember. As an undergraduate at the University of Washington, while remaining an enthusiastic mathematics student, he grew into an enthusiastic mathematics teacher. He was a principal instructor in University of Washington Math Circles and other classes, worked as a teaching assistant for summer programs and undergraduate courses, and was on the jury and problem-writing committee of the UW Math Olympiad. Kolya graduated from UW, *magna cum laude* with honors in Mathematics, in 2015, and is now a PhD student at Yale University. He joined Math-M-Addicts in 2015.

### Matthew Lerner-Brecher (Three-time qualifier, USAMO/USAJMO)

Matthew Lerner-Brecher grew up in New York City. He has been interested in math for as long as he can remember and has competed in contests since middle school. Among other things, he qualified for the USAJMO twice and the USAMO once. While in high school, he participated in Math-M-Addicts for three years as a student and was co-captain of both the Stuyvesant and New York City math teams for two years. He is currently a math major at Columbia University.

### Mike C (PhD, Theoretical Physics)

Mike C grew up in a small village in rural England. Mike has a PhD in theoretical physics, he has won numerous university teaching prizes, and he does not believe in the existence of a legitimate excuse for not completing homework.

### Mikhail Shklyar (Captain, Brooklyn Tech Math Team)

Mikhail Shklyar came to New York at the age of 14 from St. Petersburg, Russia, with weak English, but a strong desire to do math. He went to the Brooklyn Technical High School where, as the captain of the math team, he placed first in the New York City (NYML) and New York State (NYSML) math competitions. He moved on to Columbia University, where he won first place in a competition among first-year and then second-year students. However, solving problems under time limit was not his biggest passion. He was much more interested in learning advanced topics in mathematics and then teaching them to others. He has spent four of his summers working as a junior staff member at different math programs and has greatly enjoyed himself there. He is excited about the opportunity to work with intelligent students during the school year. He is currently pursuing his PhD in Mathematics at the CUNY Graduate Center. Mikhail has been teaching Math-M-Addicts since 2009.

### Misha Kogan (Top 15, William Lowell Putnam Competition)

Misha Kogan grew up in St. Petersburg, Russia. When he was 12, Misha started participating in math contests and joined a Math Circle. Joining the Circle had a big impact on Misha's life and he's been doing math ever since. During his senior year in high school he earned a First Diploma in the Soviet Math Olympiad. He moved to the United States a year later and studied at NYU's Courant institute. He was a member of NYU's Putnam team, and placed in top 15 in 1993. Misha continued studying math at MIT, where he earned a Ph.D. in symplectic geometry in 2000. For the next five years Misha was doing research and teaching math. He held positions at Northeastern University and The Institute for Advanced Study. Misha is currently a managing director at the D. E. Shaw Group*. He has been teaching at Math-M-Addicts since 2014.

*The D. E. Shaw Group is not affiliated with Math-M-Addicts.

### Monish Kumar (B.Tech in Electrical Engineering, Indian Institute of Technology, Delhi)

Monish has a B. Tech in Electrical Engineering from the Indian Institute of Technology, Delhi, an MBA from the Indian Institute of Management, Ahmedabad, and a Master's in International Affairs from Columbia University, New York. He has a deep interest in math and efficient problem solving, and loves to share (inflict) interesting problems on friends, colleagues, and his kids. Monish is energized to share this interest with his students. He also hopes to apply math to improve his golf scores, which, so far, have a high mean and a large standard deviation. Monish works with Boston Consulting Group as a Senior Partner in their Financial Services Practice.

### Natalia Lukina (M.S. in Applied Math and Physics, Moscow Institute of Physics and Technology)

Natalia Lukina grew up in Korolev, Russia. She participated in math and physics olympiads throughout her high school years. Natalia received B.S. and M.S. degrees with Honors from Moscow Institute of Physics and Technology. During her student years she taught and tutored at Phystech College. Later, Natalia studied and worked as a teaching assistant at Caltech and received an M.S. degree in 2001. Since then Natalia has taught math at a wide variety of schools. Her areas of expertise are working with gifted and talented kids and preparing students for math competitions.

### Oleg Ledeniov (M.Sc. in Computer Science, Technion)

Oleg Ledeniov was born in Moscow and grew up on books by Martin Gardner and Raymond Smullyan. After moving to Israel, he earned B.A. *summa cum laude* and M.Sc. in Computer Science from Technion, where he specialized in Artificial Intelligence and Machine Learning. He got his first taste of teaching as a teaching assistant at Technion and at the Open University of Israel. After graduation, Oleg worked as a software engineer in several companies. He is currently employed by GE Healthcare and creates imaging software for radiologists, which is used in hundreds of major hospitals worldwide. Oleg joined Math-M-Addicts in 2018 and is happy to be a part of this fantastic school.

### Ping Sun (PHD, Theoretical Physics)

Ping Sun grew up in Shanghai, China. During high school, Ping participated in various math competitions, including AMC and AIME. He studied physics in college and graduate school and earned a PhD in theoretical physics. Ping currently works in Fintech, and still enjoys solving math problems.

### Ruvim Breydo (Bronze Medal, International Math Olympiad)

Ruvim Breydo emigrated from Russia in 1987 when he was 14. Back in Russia, Ruvim attended St. Petersburg's 239 School - one of the most successful math programs in the country. He became a member of the New York City Math Team and participated in various math contests. Ruvim achieved a second place finish in the 1991 USA Math Olympiad and a bronze medal in the 1991 International Math Olympiad. He first fell in love with teaching as a captain of the Stuyvesant High School math team when he was a senior. All throughout college, Ruvim continued to tutor students. Ruvim Breydo graduated from Harvard *summa cum laude* in 1995 with an AB in Physics. He is currently a managing director at the D. E. Shaw group*, a global investment and technology development firm. Ruvim has been teaching Math-M-Addicts since 2005.

*The D. E. Shaw group is not affiliated with Math-M-Addicts.

### Sasha Rozenberg (3rd prize, All-USSR Physics Olympiad)

As a child, Sasha enjoyed solving math and logic problems until he discovered physics in middle school. He won various diplomas in physics Olympiads throughout high school and in college (which allowed him to skip the final exams). Figuring out what the world is made of and how it runs was driving Sasha toward theoretical physics. After studying string theory and completing his PhD, he switched to more practical applications and worked in finance. He enjoys hikes in the mountains and meditation retreats.

### Sergey Levin (Silver Medal, International Math Olympiad)

Sergey Levin came to Rhode Island from St. Petersburg, Russia, when he was 15. He was interested in soccer and mathematics from a very young age, but in the end mathematics prevailed. His biggest contest accomplishments are 6th place at the 1992 USA Math Olympiad, silver medal at the 1992 International Math Olympiad, and a Putnam Fellowship (awarded to the top 5 individual scorers in the prestigious William Lowell Putnam Competition) in 1995. After graduation from Harvard with a degree in Mathematics, Sergey entered the world of finance. Sergey has been teaching Math-M-Addicts since 2005.

### Tanya Ezubova (Diploma winner, All-Russian Mathematical Olympiad)

Tanya Ezubova grew up in Moscow, Russia. Her love for mathematics began in 7^{th} grade, when she started studying in a famous physics-mathematical lyceum. She actively participated and won diplomas in many Math Olympiads, such as the All-Russian and Moscow Mathematics Olympiads. She was also a team captain in mathematical fights. Currently, she is pursuing her Bachelors in Math at NYU. Some of her many hobbies include learning foreign languages, playing the piano, playing volleyball, and drawing. Tanya has been teaching at Math-M-Addicts since 2017.

### Tanya Gross (Math Team Coach, TAG School for Young Scholars)

Tanya Gross grew up in Bucks County, Pennsylvania. In middle school, thanks to the MathCounts competition, she discovered a love for math and also for explaining it to others. It was the one area of life in which she was not shy. Tanya went on to graduate from Princeton University and Stanford University with degrees in electrical engineering. She worked as a digital ASIC engineer in Silicon Valley for 5 years, then switched gears to work at the Metropolitan Museum of Art before becoming a stay-at-home mother. She currently coaches the math team at the TAG School for Young Scholars. Tanya has been teaching at Math-M-Addicts since 2017.

### Thomas Lovering (Silver Medal, International Math Olympiad)

Thomas Lovering is a former IMO contestant for the UK (2007 Vietnam, bronze medal; 2008 Spain, silver medal) and Euclidean geometry enthusiast. He did a PhD in algebraic number theory at Harvard University, graduating in 2017, and now works as a quantitative researcher at the D E Shaw group*, a global investment and technology development firm. In his spare time, he likes to ride his Harley Davidson, play poker, and travel.

*The D. E. Shaw group is not affiliated with Math-M-Addicts.

### Thomas Jameson (Math Faculty and Math Team Coach, Speyer School)

Tom Jameson grew up in Virginia, where he developed passionate interests in poetry and classical music. He graduated from Yale University with a degree in Comparative Literature. Tom became increasingly fascinated with math after he got his first job as a schoolteacher. He eventually began taking math courses at the Harvard University Extension School, where he is now completing a Master of Liberal Arts Degree in Mathematics for Teaching. He teaches math at The Speyer Legacy School, and coaches its math team.

### Yirong Shen (M.S. in Electrical Engineering, Stanford University)

Yirong Shen came to the US at the age of 11 from Harbin, China. While attending middle school and high school in Austin, Texas, he became an enthusiastic math team participant and was a three-time USAMO qualifier. Yirong went on to study engineering at Stanford University and currently is working as a quantitative developer at the D.E.Shaw Group. He joined Math-M-Addicts in 2016.

### Yury Volvovskiy (First Prize, Russian Math Olympiad)

Yury grew up in Moscow, Russia. He enjoyed solving math puzzles since the age of 5 and in high school regularly competed in multiple math competition. His best achievement was the first prize at the Russian Math Olympiad in 1993. Yury went on to complete graduate studies in mathematics and then worked as a quantitative analyst. He is now a software engineer with Google and still enjoys math puzzles.