We prove that monoids Mon〈a, b, c, d : ab = 0, ac = 1, db = 1, dc = 1 dab = 1, dab = 1, . . . , dab = 1〉 are congruence-free for all n ≥ 1. This provides a new countable family of finitely presented congruence-free monoids, bringing one step closer to understanding the Boone–Higman Conjecture. We also provide examples which show that finitely presented congruence-free monoids may have quadratic...

Defects in the superior margin of ribs, of an erosive nature, appear to be uncommon, the chief causes being poliomyelitis (Bernstein, Loeser, and Manning, 1958), hyperparathyroidism (Noetzli and Steinbach, 1962), rheumatoid arthritis (Alpert and Feldman, 1964), scleroderma (Keats, 1967); other rarer causes have been summarized by Boone, Swenson, and Felson (1964), Gayler and Donner (1967), and ...

66 © 2017 Guilford Publications, Inc. This project was supported by a grant from the John Templeton Foundation (Grant number 032294). The opinions expressed here are our own and do not necessarily reflect the views of the John Templeton Foundation. Address correspondence to Andrew E. Monroe, Department of Psychology, Appalachian State University, 222 Joyce Lawrence Ln., Boone, NC 28608; E-mail:...

Editor-in-Chief Tommy Boone, PhD, MBA Review Board Todd Astorino, PhD Julien Baker, PhD Steve Brock, PhD Lance Dalleck, PhD Eric Goulet, PhD Robert Gotshall, PhD Alexander Hutchison, PhD M. Knight-Maloney, PhD Len Kravitz, PhD James Laskin, PhD Yit Aun Lim, PhD Lonnie Lowery, PhD Derek Marks, PhD Cristine Mermier, PhD Robert Robergs, PhD Chantal Vella, PhD Dale Wagner, PhD Frank Wyatt, PhD Ben ...

This paper investigates the time series properties of fighting and scoring in the National Hockey League from 1957-2013. The empirical analysis focuses on identifying structural breaks in the various time series and correlating these breaks with rule changes in the NHL, especially those that focus on fighting. We find that player behavior in the areas of fighting and scoring changed structurall...

A b s t r a c t In this paper, we briefly discuss the dynamic and functional approach to computer symbolic tensor analysis. The ccgrg package for Wolfram Language/Mathematica is used to illustrate this approach. Some examples of applications are attached.

In this article, we propose a fuzzy class relation assigning to each pair of finite fuzzy sets a degree to which they are equipollent, which indicates that they have the same number of elements. The concepts of fuzzy sets and fuzzy classes in the class of all countable sets are introduced, and several standard relations and constructions, such as the fuzzy power set and exponentiation, are defi...