The 2010-2011 season of Metroplex Math Circle will have a strong start with our first lecture by Dr. Branislav Kisačanin.

**Dr. Kisačanin** is a computer scientist at Texas Instruments working in the field of computer vision. In his spare time he likes to use computer vision for fun project such as his Tetris-playing robot. He loved math and physics competitions and nowadays likes to challenge his wife, kids, and friends with math problems and puzzles. Dr.Kisačanin wrote a book about selected mathematical gems:Mathematical Problems and Proofs.

Dr. Kisačanin has chosen Number Sequences as his first topic. These sequences are critical parts of the tool kit of any middle school problem solver but also offer unexplored mysteries for professional mathematicians. Following are some of the topics Dr. Kisačanin may cover in the course of his talk:

- Derive the formula and the relation to square numbers both algebraically and geometrically
- Sum of n squares (Gregory’s vanishing triangle, induction)
- Sum of n cubes (connection back to triangular numbers)
- Excercise: Sum of n odd numbers (again alg + geom)
- OPTIONAL: Sums of higher powers (telescoping)

- About Leonardo of Pisa
- The sequence and its various properties and curiosities
- Recursion
- Formula (de Moivre / N. Bernoulli / Euler / Binet)
- Excercise: Cassini’s identity
- OPTIONAL: De Moivre’s derivation using generating functions

- Coefficients in (a+b)^n
- Combinations
- Pascal’s Triangle
- Excercise: each row sums to 2^n, finding triangular and Fibonacci numbers, …

** Other sequences and open problems**

- NJA Sloane’s online encyclopedia
- Excercise: find this 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, …
- Primes, Mersenne, Fermat, perfect, …
- Open problems

on October 10, 2010 at 7:06 pm |October 16 – Mathematical Proofs « Metroplex Math Circle[…] are very fortunate to once again have a lecture by Dr. Branislav Kisačanin. Here is his description of the upcoming session: Introduction to Mathematical Proofs In this […]

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