View of Manhattan from Brooklyn Heights

Associate Professor
Department of Mathematics
Brooklyn College
2900 Bedford Avenue, Brooklyn, NY 11210

Office: 2317B Old Ingersoll
Email: skingan at

I'm on sabbatical this year and may be slow responding to email. My blog is off-line and under renovation.

My area of research is combinatorics - matroid theory, graph theory, and combinatorial algorithms with applications to network science. My areas of interest are broader and include linear and abstract algebra, probability, statistics, history of mathematics, and climate science.

Publications and Talks

My research is supported by the following grants:

  • Faculty Fellowship Leave (July 2016 - June 2017)

  • PSC CUNY grants (July 2010-June 2016):
    (Award Numbers 68341-00 46, 67151-00 45,  #66305-00 44 , 65064-00 43 , 64181-00 42, 63076-00 41)

Google scholar page.

The Matroid Theory Pages have among other things a large bibliography of matroid papers and links to my matroid software Oid

Teaching-related activities are located at the Teaching Activities Pages.

Details of service activities are listed in the Brooklyn College Faculty Profile.

If you know me, connect with me on Linked in or CUNY Academic Commons or Academia.

I organize the New York Combinatorics Seminar, on Fridays at 11:30 am at the Graduate Center together with Kira Adaricheva, Deepak Bal, Jonathan Cutler, Ezra Halleck, Christopher Hanusa and Kerry Ojakian.

I also organize the Brooklyn College Mathematical Science Colloquium together with David Aulicino and Rodrigo Trevino

In June 2016 Kira Adaricheva and I organized a minisymposium on Matroids and Antimatroids at the SIAM Discrete Math Conference.

In March 2012 Joe Bonin and I organized the special session on Matroid Theory at the American Mathematical Society (Eastern Section) meeting in Washington DC.

Professional Affiliations

American Mathematical Society (AMS)

Society for Industrial and Applied Mathematics (SIAM)

International Linear Algebra Society (ILAS)

The Contributions of Dominic Welsh to Matroid Theory by James Oxley.

A biographical memoir of John Hammersley by Dominic Welsh and Geoffrey Grimmett.

The academic family tree of John Hammersley.

Home Pages of Matroid Theorists

Home Pages of Combinatorial People and Groups

Combinatorics Conferences

Math Department

Brooklyn College

CUNY Graduate Center

--MR Lookup

--Discrete Math
--Geometric Design


--Metro NY Section

Discrete Mathematics Days in the Northeast



Biographies of Women in Math

Wolfram MathWorld

The Right War

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