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We are interested in the possible sets of cardinalities of Kurepa trees in models of $ZFC$ $+$ $CH$.
In this paper we present a… Expand Abstract We show that strongly compact cardinals and MM are sensitive to λ-closed forcings for arbitrarily large λ. This is done… Expand Refinements of Buzano’s and Kurepa’s inequalities in inner product spaces and applications for discrete and integral inequalities… Expand We discuss some problems in number theory posed by Djuro Kurepa (1907-1993), including his classical left factorial hypothesis… Expand In this paper we define the function vMm(s; a, z), and we study the special cases 1Mm(s; a, z) and nM−1(1; 1, n + 1). We prove… Expand By an ω1-tree we mean a tree of power ω1 and height ω1. We call an ω1-tree a Jech-Kunen tree if it hask-many branches for somek… Expand SummaryBy an ω1 we mean a tree of power ω1 and height ω1. An ω1-tree is called a Kurepa tree if all its levels are countable and… Expand Chaos is the generic term used to describe the output, under certain conditions, of nonlinear dynamical systems. It is generally… Expand 1. INTRODUCTION In this paper our main object is the study of relations between cardinal numbers which are written in the form a… Expand