caa a22 4500 605470006 CHVBK 20210128100325.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s00500-014-1504-5 doi (NATIONALLICENCE)springer-10.1007/s00500-014-1504-5 On some properties of directoids [Elektronische Daten] [I. Chajda, J. Gil-Férez, R. Giuntini, M. Kolařík, A. Ledda, F. Paoli] We study some properties of directoids and their expansions by additional signature, including bounded involutive directoids and complemented directoids. Among other results, we provide a shorter proof of the direct decomposition theorem for bounded involutive directoids given in Chajda and Länger (Directoids. An algebraic approach to ordered sets. Heldermann Verlag, Lemgo 2011); we present a description of central elements of complemented directoids; we show that the variety of directoids, as well as its expansions mentioned above, all have the strong amalgamation property. Springer-Verlag Berlin Heidelberg, 2014 Directoid nationallicence Partially ordered set nationallicence Antitone involution nationallicence Church algebra nationallicence Chajda I. Palacký University, Olomouc, Czech Republic aut Gil-Férez J. University of Cagliari, Cagliari, Italy aut Giuntini R. University of Cagliari, Cagliari, Italy aut Kolařík M. Palacký University, Olomouc, Czech Republic aut Ledda A. University of Cagliari, Cagliari, Italy aut Paoli F. University of Cagliari, Cagliari, Italy aut Soft Computing Springer Berlin Heidelberg 19/4(2015-04-01), 955-964 1432-7643 19:4<955 2015 19 500 https://doi.org/10.1007/s00500-014-1504-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00500-014-1504-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chajda I. Palacký University, Olomouc, Czech Republic aut NATIONALLICENCE 700 1- Gil-Férez J. University of Cagliari, Cagliari, Italy aut NATIONALLICENCE 700 1- Giuntini R. University of Cagliari, Cagliari, Italy aut NATIONALLICENCE 700 1- Kolařík M. Palacký University, Olomouc, Czech Republic aut NATIONALLICENCE 700 1- Ledda A. University of Cagliari, Cagliari, Italy aut NATIONALLICENCE 700 1- Paoli F. University of Cagliari, Cagliari, Italy aut NATIONALLICENCE 773 0- Soft Computing Springer Berlin Heidelberg 19/4(2015-04-01), 955-964 1432-7643 19:4<955 2015 19 500