Combinatorics and Computing Group :: Seminars

Institute for Research in Fundamental Sciences

A Combinatorial Object

Magic Square of Order 25

F26A Graph

Description: Magic squares are numerical arrays that have substructures with constant sums. This above design is based on a magic square of order 25, containing the numbers from 0 to 624. Each row, column, and main diagonal sums to the "magic constant" of 7800. The numbers in the magic square are represented by a visual base-5 system: four concentric squares serve as the 1, 5, 25, and 125 places, while shades of grey stand for the numerals 0 to 4.

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Seminars and Short Courses at IPM

2022

Weekly Webinars on Combinatorics and Computing,
February 2022 - June 2022

2021

Weekly Webinarsa on Combinatorics and Computing,
Oct 2021 - January 2022

Weekly Seminars on Combinatorics and Computing,
February 2021 - June 2021

2020

Weekly Webinars on Combinatorics and Computing,
Oct 2020 - January 2021

2019

Weekly Seminars on Combinatorics and Computing,
Oct 2019 - January 2020

Weekly Seminars on Combinatorics and Computing,
February 2019 - June 2019

2018

Weekly Seminars on Combinatorics and Computing,
Oct 2018 - January 2019

Weekly Seminars on Combinatorics and Computing,
February 2018 - June 2018

2017

Course: Random Graphs, by Behruz Tayfeh-Rezaie,
January 2017 - June 2017
Weekly Seminars on Combinatorics and Computing,
September 2017 - January 2018
Weekly Seminars on Combinatorics and Computing,
February 2017 - June 2017

2016

Course: Probabilistic Methods in Combinatorics, by Behruz Tayfeh-Rezaie,
September 2016 - January 2017
Weekly Seminars on Combinatorics and Computing,
September 2016 - January 2017
Weekly Seminars on Combinatorics and Computing,
February 2016 - June 2016

2015

Weekly Seminars on Combinatorics and Computing,
September 2015 - January 2016
Weekly Seminars on Combinatorics and Computing,
February 2015 - June 2015

2014

Weekly Seminars on Combinatorics and Computing,
September 2014 - January 2015
Weekly Seminars on Combinatorics and Computing,
February 2014 - June 2014

2013

Weekly Seminars on Combinatorics and Computing,
September 2013 - January 2014
Weekly Seminars on Combinatorics and Computing,
February 2013 - June 2013

2012

Weekly Seminars on Combinatorics and Computing,
September 2012 - January 2013
Weekly Seminars on Combinatorics and Computing,
February 2012 - June 2012

2011

Weekly Seminars on Combinatorics and Computing,
September 28, 2011 - January 18, 2012
Weekly Seminars on Combinatorics and Computing,
February 16 - June 22, 2011

2010

Weekly Seminars on Combinatorics and Computing,
October 6, 2010 - January 19, 2011
Weekly Seminars on Combinatorics and Computing,
February 17 - June 16, 2010

2009

Weekly Seminars on Combinatorics and Computing,
September 30, 2009 - January 20, 2010
Weekly Seminars on Combinatorics and Computing,
January 21 - May 13, 2009

2008

Weekly Seminars on Combinatorics and Computing,
October 8 - December 31, 2008
Weekly Seminars on Combinatorics and Computing,
January 30 - June 18, 2008

2007

Lectures on Spectral Graph Theory: The Star Complement Technique (4 Lectures) by Behruz Tayfeh-Rezaie,
November 14, 21 and Dec. 5, 12, 2007
Weekly Seminars on Combinatorics and Computing,
September 26, 2007 - January 2, 2008

2006

Weekly Seminars on Algebraic Graph Theory,
October 5 - December 28, 2006
Weekly Seminars on Combinatorics and Computing,
September 27 - December 27, 2006
Partitioned Matrices, Interlacing Eigenvalues and Graphs by Willem H. Haemers,
May 2006
Some Applications of Polynomials in Combinatorics by Richard M. Wilson,
May 2006
Strongly Regular Graphs by Andries E. Brouwer,
April 2006
Reconstruction Problems by Elena Konstantinova,
April 2006

2004

A Short Course in Combinatorics on Words by Morteza Mohammad-Noori,
June 2-26, 2004

2003

Weekly Seminars on Combinatorics and Computing,
October 1 - December 31, 2003
Weekly Seminars on Combinatorics and Computing,
February 19 - June 18, 2003

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