Sur les invariants des algebres de Weyl et de leurs corps de fractions; a Picard-Brauer five term exact sequence for braided categories; topological methods in algebra; an introduction to effective calculus in quantum groups; Kummer theory for monogenic Larson orders; smash (co)products from adjunctions; module-theoretical properties of good curve singularities; Morita-Takeuchi equivalance, cohomology of coalgebras and Azumaya coalgebras; decomposition of locally finite modules; existence of covers over fixed rings; on the application of the factorization ideals associated to a finite free resolution; division theorem over the Dwork-Monsky-Washnitzer completion of polynomial rings and Weyl algebras; maximal subfields in the quotient division ring of an enveloping algebra; a Maschke-type theorem for quasi-Hopf algebras; when are all the finitely generated modules embeddable in free modules?; skew-primitive elements of quantum groups and braided Lie algebras; involutive invariants of a Krull domain and Amitsur cohomology; the spectrum of Abelian categories and reconstruction of schemes; face algebras are xR-bialgebras; intersection dimension and canonical modules; Brauer groups of actions; an alternative approach to involutive Brauer groups; a new dimension for schematic algebras.