This is a set of lecture notes that developed out of courses on the lambda calculus that I taught at the University of Ottawa in 2001 and at Dalhousie University in 2007. Topics c...
We give a short proof of a lemma which generalizes both the main lemma from the original construction in the author's thesis of a model with no 2-Aronszajn trees, and also th...
For any partition of {1, 2, . . . , n} we define its increments Xi, 1 i n by Xi = 1 if i is the smallest element in the partition block that contains it, Xi = 0 otherwise. We pr...
A new version of transition logic is presented. It integrates (dynamic) transitions, which change world states, and classical (static) reasoning, restricted in the paper to Horn l...
A tree series over a semiring with partially ordered carrier set can be considered as a fuzzy set. We investigate conditions under which it can also be understood as a fuzzied rec...