Filters and ultrafilters over definable subsets of admissible ordinals -- Superinfinitesimals and the calculus of the generalized riemann integral -- Point-picking games and HFD's -- On homomorphism types of superatomic interval Boolean algebras -- Dectdable theories of pseudo-Algebraically closed fields -- Definability in power series rings of nonzero characteristic -- Convexity properties and algebraic closure operators -- Remarks on finitely based logics -- Monadicity in topological pseudo-boolean algebras -- Finite extensions of finite groups -- Constructing choice sequences from lawless sequences of neighbourhood functions -- Partitions and homogeneous sets for admissible ordinals -- Elimination of quantifiers for the theory of Archimedean ordered divisible groups in a logic with Ramsey quantifiers -- A proof-theoretic approach to non standard analysis (continued) -- Interpretations and the model theory of the classical geometries -- On cantor-bendixson spectra containing (1,1) โ I -- Abstract model-theory and nets of C*-algebras: Noncommutative interpolation and preservation properties -- A contribution to nonstandard teratology -- Model- and substructure complete theories of ordered Abelian groups -- Quantifier elimination and decision procedures for valued fields -- On ? 3 1

1. Mathematics
2. Mathematical logic
3. Mathematics
4. Mathematical Logic and Foundations