Zur Spektraltheorie J-selbstadjungierter Operatoren.
Über einen Satz von M.A. Neumark.
Eine Verallgemeinerung eines Satzes von L.S. PONTRJAGIN.
The free algebra in the variety generated by quasi-trivial semigroups
Commutative quasi-trivial superassociative systems
C-S-maximal superassociative systems
Homogeneous superassociative systems
On Floquet eigenvalue problems for first order differential systems in the complex domain.
Restricted congruence regularity of algebras.
Minimal and maximal sets of Bell-type inequalities holding in a logic.
Congruence kernels of orthoimplication algebras.
Page 1