151 citations · 152 across the 8 of their papers we have counts for
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math.CT2019
On selected developments in the theory of natural dualities
Miroslav Haviar
This is a survey on selected developments in the theory of natural dualities where the author had the opportunity to make with his foreign colleagues several breakthroughs and move…
math.LO2019
Congruence pairs of principal MS-algebras and perfect extensions
Abd El-Mohsen Badawy, Miroslav Haviar, Miroslav Ploščica
The notion of a congruence pair for principal MS-algebras, simpler than the one given by Beazer for -algebras \cite{6}, is introduced. It is proved that the congruences of the…
math.LO2019
Perfect extensions of de Morgan algebras
Miroslav Haviar, Miroslav Ploščica
An algebra is called a perfect extension of its subalgebra if every congruence of has a unique extension to . This terminology was us…