Klas Markström

I am Associate Professor in Mathematics at Umeå University. My main area of research is graph theory and combinatorics. Here I study both deterministic structural problems and problems regarding the pr

Venue: Institutet för framtidsstudier, Holländargatan 13, 4th floor, Stockholm, or online.Research seminar with Claes Lernestedt, Professor of Law, Stockholm University.Register hereAbstract This resear, has (at least formally) yet to start. The project might be thought of as interdisciplinary, with a base in law (I’m a criminal law professor),  Thoughts presented will be very tentative, and I welcome any kind of input.

Johanna Rickne: The Class Ceiling in Politics

Research seminar with Johanna Rickne, professor of Economics at SOFI, Stockholm University Abstract: Prior studies have documented that working-class individuals rarely become parliamentarians. We kno

“Who in your class would you not like to sit next to?” This question was posed to almost 5000 pupils (age 14–15) at Swedish high schools 2010/2011. Many adolescents experience systematic rejection duri

European Sociological Review June 22, 2011. European Sociological Review, Vol 29 (2013) pp 155–167. DOI:10.1093/esr/jcr046, available online at www.esr.oxfordjournals.org Abstract Using data from the Europ

Venue: Institutet för framtidsstudier, Holländargatan 13, 4th floor, Stockholm, or online.Research seminar with Johanna Rickne, professor of Economics at SOFI, Stockholm University.Register hereAbstracPrior studies have documented that working-class individuals rarely become parliamentarians. We know less about when in the career pipeline to parliament workers disappear, and why. We study these questions using detailed data on the universe of Swedish politicians’ careers over a 50-year period. We find roughly equal-sized declines in the proportion of workers on various rungs of the political career ladder ranging from local to national office. We reject the potential explanations that workers lack political ambition, public service motivation, honesty, or voter support. And while workers’ average high school grades and cognitive test scores are lower, this cannot explain their large promotion disadvantage, a situation that we label a class ceiling. Organizational ties to blue-collar unions help workers advance, but only to lower-level positions in left-leaning parties. We conclude that efforts to improve workers’ numerical representation should apply throughout the career ladder and focus on intra-party processes.

Svallfors, Stefan (Red.) Contested Welfare States? Welfare Attitudes in Europe and Beyond Stanford, CA: Stanford University Press, 2012, s 158-192.

Professor Michael Shalev, Department of Sociology, Hebrew University, Jerusalem Seminars host is Stefan Svallfors. The seminars are free of charge and take place at 13.00–14.30 in the Institute’s semin

Journal of Combinatorial Designs, Volume 27, Issue 4, p. 229-250, doi.org/10.1002/jcd.21642 Abstract We have performed a complete enumeration of nonisotopic triples of mutually orthogonal Latin rectangle. Here we will present a census of such triples, classified by various properties, including the order of the autotopism group of the triple. As part of this, we have also achieved the first enumeration of pairwise orthogonal triples of Youden rectangles. We have also studied orthogonal triples of rectangles which are formed by extending mutually orthogonal triples with nontrivial autotopisms one row at a time, and requiring that the autotopism group is nontrivial in each step. This class includes a triple coming from the projective plane of order 8. Here we find a remarkably symmetrical pair of triples of rectangles, formed by juxtaposing two selected copies of complete sets of mutually orthogonal Latin squares of order 4.

Journal of Graph theory 88, no 3, p.411-427. Abstract Let be a graph of density p on n vertices. Following Erdős, Łuczak, and Spencer, an m‐vertex subgraph H of G is called fullif H has minimum degree at lea. Let denote the order of a largest of G. If is a nonnegative integer, define