Nathann COHEN ALGO Research Group
Laboratoire de Recherche en Informatique
nathann dot cohen 'at' gmail dot com

Contact information

E-mail:nathann dot cohen 'at' gmail dot com
Address: LRI Laboratoire de Recherche en Informatique
Bât 650 Université Paris-Sud 11
91405 ORSAY Cedex, France



Sage patches written / reviewed

Graph tutorialLinear Programming TutorialSagebook
Some LP in Sage

I stopped contributing to Sage since SageMath Inc. is a for-profit Delaware company with an actual self-appointed CEO whose top priority is to "make a lot of money". The website steals traffic from to promote SageMath Inc’s products, and SageMath Inc. takes its orders from unknown investors while free contributors to Sage have no say in the matter.

I did not spend years’ worth of nights and week-end writing open-source code so that private individuals will get richer. My government does not pay me to be the free workforce of a private for-profit company either.

Nice things I read ....

- Every H-decomposition of Kn has a nearly resolvable alternative
 Noga Alon, Raphael Yuster

- Coloring, sparseness, and girth
 Alon et al.

- Orientations making k-cycles cyclic
  Zita Helle, Gábor Simonyi

- The journey of the union-closed sets conjecture
  Henning Bruhn, Oliver Schaudt

- Exact algorithms for Maximum Clique
  Patrick Prosser

- Combinatorial Designs: Constructions and Analysis
  Douglas Stinson
  (Sage patch #15259)

- On quadruple systems Lowell W. Beineke
  Overlap Cycles for Steiner Quadruple Systems
  Victoria Horan ,Glenn Hurlbert
  (Sage patch #14562)

- Characterizations of derived graphs
  Lowell W. Beineke
  (Sage patch #13961)

- Packing Graphs: The packing problem solved
  Yair Caro, Raphael Yuster

- Self-Complementary Graphs and Generalisations:
  a Comprehensive Reference Manual

  Alastair Farrugia

- Strongly regular graphs
  Peter J. Cameron

- A Ramsey-Type theorem for bipartite graphs
  Paul Erdos, Andras Hajnal, Janos Pach

- A note on regular Ramsey graphs
  Noga Alon, Sonney Ben-Shimon, Michael Krivelevish

- A Cleanup on Transitive Orientation
   Klaus Simon , Paul Trunz
  (Sage patch #12874)

- McKay's Canonical Graph Labeling Algorithm
  Stephen Hartke, A.J. Radcliffe


Nice things I draw ....

And until Google admits that his page exists, here is a link toward the homepage of Thomas Connor