Intro -- Contents -- On Countably Σ-CS Modules -- Moduli Spaces of Graded Representations of Finite Dimensional Algebras -- An Essential Extension with Nonisomorphic Ring Structures -- Supplemented Principal Ideals -- Some Properties of Rings Reflected in Infinite Matrix Rings -- Slender Monoids -- Multivariable Public Key Cryptosystems -- Repeated-Root Constacyclic Codes of Length 2s over Z2a -- Contravariant Finiteness and Pure Semisimple Rings -- A Characterization of Additive Categories with the Krull-Schmidt Property -- A Dixmier-Moeglin Equivalence for Poisson Algebras with Torus Actions -- Pure-Injectivity in the Category of Flat Modules -- Eigenvalues, Multiplicities and Graphs -- Closure of Matrix Classes under Schur Complementation, Including Singularities -- Sums of Alternating Matrices and Invertible Matrices -- Internal Exchange Rings -- Representation of σ-Complete MV-Algebras and their Associated Dedekind σ-Complete l-Groups -- Noncommutative Linear Algebra -- The Moduli Space of Three-Dimensional Lie Algebras -- Questions Related to Koethe's Nil Ideal Problem -- Bounds on the Pseudo-Weight of Minimal Pseudo-Codewords of Projective Geometry Codes -- On Galois Extensions with Automorphism Group as Galois Group -- A *-Litoff Theorem for Associative Pairs -- Open Problems.