We give a new characterization of $SOP$ (the strict order property) in terms the behaviour formulas any model theory as opposed to having look at indiscernible sequences inside saturated ones. refine theorem Shelah, namely has $OP$ if and only it $IP$ independence or $SOP$, several ways by characterizing various notions functional analytic style. point out some connections between dividing line...

Let E be a completely regular topological space. Mitoma [9 ], extending the classical case E = R 1, has recently introduced the Skorokhod topology on the space D( [0, 1 ] : E). This topology is investigated in detail. We find families of continuous functions which generate the topology, examine the structure of the Borel and Baire a-algebras of D( [0, 1 ] : E) and prove tightness criteria for E...

Given an arbitrary ideal f on the real numbers, two topologies are denned that are both finer than the ordinary topology. There are nonmeasurable, non-Baire sets that are open in all of these topologies, independent of f . This shows why the restriction to Baire sets is necessary in the usual definition of the ./"-density topology. It appears to be difficult to find such restrictions in the cas...

Real-valued functions of a real variable which are continuous with respect to the density topology on both the domain and the range are called density continuous. A typical continuous function is nowhere density continuous. The same is true of a typical homeomorphism of the real line. A subset of the real line is the set of points of discontinuity of a density continuous function if and only if...

In this note we show that ω1-Universally Baire selfjustifying systems are fully Universally Baire under the Weak Stationary Reflection Principle for Pairs. This involves analyzing the notion of a weakly captured set of reals, a weakening of the Universal Baire property.

We define $\Delta$-Baire spaces. If a paratopological group $G$ is space, then topological group. Locally pseudocompact spaces, Baire $p$-spaces, $\Sigma$-spaces, products of \v{C}ech-complete spaces are