Michel Las Vergnas (11 January 1941 – 19 January 2013) was a French mathematician associated with

Pierre-and-Marie-Curie University Pierre and Marie Curie University (french: link=no, Université Pierre-et-Marie-Curie, UPMC), also known as Paris 6, was a public research university in Paris, France, from 1971 to 2017. The university was located on the Jussieu Campus in the L ...

Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), ma ...

, and a research director emeritus at the

Centre national de la recherche scientifique The French National Centre for Scientific Research (french: link=no, Centre national de la recherche scientifique, CNRS) is the French state research organisation and is the largest fundamental science agency in Europe. In 2016, it employed 31,63 ...

.Michel Las Vergnas passed away
, Equipe Combinatoire & Optimisation, Pierre-and-Marie-Curie University, retrieved 2013-11-03. Las Vergnas earned his Ph.D. in 1972 from Pierre-and-Marie-Curie University, under the supervision of

Claude Berge Claude Jacques Berge (5 June 1926 – 30 June 2002) was a French mathematician, recognized as one of the modern founders of combinatorics and graph theory. Biography and professional history Claude Berge's parents were André Berge and Geneviève ...

. He was one of the founders of the ''

European Journal of Combinatorics European, or Europeans, or Europeneans, may refer to: In general * ''European'', an adjective referring to something of, from, or related to Europe ** Ethnic groups in Europe ** Demographics of Europe ** European cuisine, the cuisines of Europe ...

'', which began publishing in 1980. His initial research was in

graph theory In mathematics, graph theory is the study of ''graphs'', which are mathematical structures used to model pairwise relations between objects. A graph in this context is made up of '' vertices'' (also called ''nodes'' or ''points'') which are conn ...

, and particularly in the theories of matching and

connectivity Connectivity may refer to: Computing and technology * Connectivity (media), the ability of the social media to accumulate economic capital from the users connections and activities * Internet connectivity, the means by which individual terminal ...

. Beginning in 1975, he became one of the pioneers of the theory of

oriented matroid An oriented matroid is a mathematical structure that abstracts the properties of directed graphs, vector arrangements over ordered fields, and hyperplane arrangements over ordered fields. In comparison, an ordinary (i.e., non-oriented) matroid a ...

s, and since that time he was interested in connections between combinatorics and geometry. A workshop on combinatorial geometry, held in Marseilles in April 2013, was dedicated to his memory.Workshop program
Combinatorial geometries: matroids, oriented matroids and applications, retrieved 2013-11-03.

References

{{DEFAULTSORT:Las Vergnas, Michel 1941 births 2013 deaths 20th-century French mathematicians 21st-century French mathematicians Pierre and Marie Curie University alumni Academic staff of the University of Paris Combinatorialists Graph theorists