T. E. Hall

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Eilenberg has shown that there is a one-to-one correspondence between varieties of finite monoids and varieties of recognizable languages. In this paper, we give a description of a variety of languages close to the class of piecewise testable languages considered by I. Simon. The corresponding variety of monoids is the variety of J-trivial monoids with(More)
Part of understanding normal and abnormal fear in children and adolescents is having knowledge of how they acquire fears and of how fears change across development. One way to examine the relative contributions of heredity and environment to the experience of fear is to study fear across cultures. The Fear Survey Schedule for Children-II (FSSC-II; Gullone,(More)
Two nearly identical beam line end stations and a dedicated counting room have been installed and fully instrumented at the Indiana University Cyclotron Facility (IUCF) for the performance of radiation effects tests and studies with high energy protons (up to 200 MeV) on semiconductor and other micro-and opto-electronic devices to be used in space and other(More)
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