25 citations · 39 across the 40 of their papers we have counts for
3 papers · 2 filters
Varieties corresponding to classes of complemented posets
Ivan Chajda, Miroslav Kolařík, Helmut Länger
As algebraic semantics of the logic of quantum mechanics there are usually used orthomodular posets, i.e. bounded posets with a complementation which is an antitone involution and…
Ideals of direct products of rings
Ivan Chajda, Günther Eigenthaler, Helmut Länger
It is known that an ideal of a direct product of commutative unitary rings is directly decomposable into ideals of the corresponding factors. We show that this does not hold in gen…
Directly decomposable ideals and congruence kernels of commutative semirings
Ivan Chajda, Günther Eigenthaler, Helmut Länger
As pointed out in the monographs by J. S. Golan and by W. Kuich and A. Salomaa on semirings, ideals play an important role despite the fact that they need not be congruence kernels…