کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5778150 | 1633429 | 2017 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Condensational equivalence, equimorphism, elementary equivalence and similar similarities
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
منطق ریاضی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We investigate the interplay between several similarities of relational structures: the condensational equivalence (defined by Xâ¼cY iff there are bijective homomorphisms f:XâY and g:YâX), the isomorphism, the equimorphism (bi-embedability), the elementary equivalence and the similarities of structures determined by some similarities of their self-embedding monoids. It turns out that the Hasse diagram describing the hierarchy of these equivalence relations restricted to the set ModL(κ) of all L-structures of size κ collapses significantly for a finite cardinal κ or for a unary language L, while for infinite structures of non-unary languages we have a large diversity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Pure and Applied Logic - Volume 168, Issue 6, June 2017, Pages 1210-1223
Journal: Annals of Pure and Applied Logic - Volume 168, Issue 6, June 2017, Pages 1210-1223
نویسندگان
MiloÅ¡ S. KuriliÄ, Nenad MoraÄa,