0504854 20240103222043.320190524235959.9 85061959520 000461580400005 10.1007/s00500-019-03850-6 10 s. P cav_un_epca*02583681432-7643237 (2019)2177-2186Springer Graded model theory Mathematical fuzzy logic Amalgamation theorems cav_un_auth*0362070 Badia G. AT cav_un_auth*0375314 Costa V. ES cav_un_auth*0311883 Dellunde P. ES cav_un_auth*0293476 Noguera Carles Matematická teorie rozhodování Department of Decision Making Theory MTR MTR UTIA-B Department of Decision Making Theory Ústav teorie informace a automatizace AV ČR, v. v. i. http://library.utia.cas.cz/separaty/2019/MTR/noguera-0504854.pdf https://link.springer.com/article/10.1007/s00500-019-03850-6 cav_un_auth*0349495 GA17-04630S GA ČR CZ This paper is a contribution to graded model theory, in the context of mathematical fuzzy logic. We study characterizations of classes of graded structures in terms of the syntactic form of their first-order axiomatization. We focus on classes given by universal and universal–existential sentences. In particular, we prove two amalgamation results using the technique of diagrams in the setting of structures valued on a finite MTL-algebra, from which analogues of the Łoś–Tarski and the Chang–Łoś–Suszko preservation theorems follow. WOS BA 10000 10100 10101 2020 4 RVO:67985556 http://hdl.handle.net/11104/0297072 S 1* Article Chemistry Analytical A COMPUTERSCIENCE.INTERDISCIPLINARYAPPLICATIONS|COMPUTERSCIENCE.ARTIFICIALINTELLIGENCE 2.988 1.125 3 0.01198 0.499 8859 120 0.705 40.95 3.41 5282 Q2 2.638 893 Q2 32.106 63.5 Q3 Q4 0.87 Q2 63.761 2019 85061959520 SCOPUS PUBMED 000461580400005 WOS cav_un_epca*0258368 Soft Computing 1432-7643 1433-7479 Roč. 23 č. 7 2019 2177 2186 Springer