copies
Triples of Orthogonal Latin and Youden Rectangles For Small Orders
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.
Emergent Cultural Differences in Online Communities’ Norms of Fairness
Games and Cultures, doi.org/10.1177/1555412018800650 Abstract Unpredictable social dynamics can dominate social outcomes even in carefully designed societies like online multiplayer games. According to
The ethics of age limits
This informal workshop focuses on four papers dealing with a variety of ethical questions associated with the use of age limits, especially in health care. Time: Wednesday, November 23, 14:00 - 18:00Plac The Institute for Futures Studies (IFFS), Holländardgatan 13, Stockholm According to Jeff McMahan, we ought to save an individual, A, from dying as a young adult (e.g., at age 30) rather than save some other individual, B, from dying as a newborn, even if the latter intervention would give B twice as many years of full-quality life as the former intervention would give A. Call this claim . I argue that if we accept , then we must reject at least one of three other claims:
