On centers and state spaces of logics
On charged fields with group symmetry and degeneracies of Verlinde's matrix S*
On compact non-Kählerian manfolds admitting an almost Kähler structure
On complete-cocomplete subspaces of an inner product space
In this note we give a measure-theoretic criterion for the completeness of an inner product space. We show that an inner product space is complete if and only if there exists a -additive state on , the orthomodular poset of complete-cocomplete subspaces of . We then consider the problem of whether every state on , the class of splitting subspaces of , can be extended to a Hilbertian state on ; we show that for the dense hyperplane (of a separable Hilbert space) constructed by P. Pták and...
On -conformal changes of Riemann-Finsler metrics
On constant solutions of the Yang-Mills equations
On convergences of signed states
On coupling constant thresholds and related eigenvalue properties of Dirac operators.
On deformations of finite operator calculus of Rota
The author develops a -analogue of Rota’s finite operator calculus in enumerative combinatorics.
On diamagnetism and de Haas-van Alphen effect
On direct decompositions of certain orthomodular lattices.
On Discrete Frames Associated with Semidirect Products.
On eigenfunction expansions and scattering theory.
On embedding curves in surfaces
Contrary to a statement of Borsuk the author proves that every locally plane Peano continuum is embeddable into a 2-manifold.
On ergodic properties of convolution operators associated with compact quantum groups
Recent results of M. Junge and Q. Xu on the ergodic properties of the averages of kernels in noncommutative -spaces are applied to the analysis of almost uniform convergence of operators induced by convolutions on compact quantum groups.
On essential self-adjointness of the relativistic hamiltonian of a spinless particle in a negative scalar potential
On essential selfadjointness of the Weyl quantized relativistic Hamiltonian.
On extension properties for observables
On generating and concreteness in quantum logics
On geodesic mappings of special Finsler spaces
The author previously studied with F. Ilosvay and B. Kis [Publ. Math. 42, 139-144 (1993; Zbl 0796.53022)] the diffeomorphisms between two Finsler spaces and which map the geodesics of to geodesics of (geodesic mappings).Now, he investigates the geodesic mappings between a Finsler space and a Riemannian space . The main result of this paper is as follows: if is of constant curvature and the mapping is a strongly geodesic mapping then or and .