-Solid Varieties of Languages
نویسنده
چکیده
In this paper, a characterization of the language varieties and congruence varieties corresponding to M -solid pseudovarieties is presented. Taking into account the isomorphisms of the Eilenberg-type correspondences, each complete sublattice of pseudovarieties corresponds to a complete sublattice of language varieties, as well as another one of congruence varieties. For the varieties of tree language, we present the complete sublattices of varieties of languages and the complete sublattice of varieties of congruences isomorphic to the complete sublattice of all M -solid pseudovarieties.
منابع مشابه
M-Solid Varieties of Languages
In this paper, a characterization of the language varieties and congruence varieties corresponding toM -solid pseudovarieties is presented. Taking into account the isomorphisms of the Eilenberg-type correspondences, each complete sublattice of pseudovarieties corresponds to a complete sublattice of language varieties, as well as another one of congruence varieties. For the varieties of tree lan...
متن کاملOn the Solidity of General Varieties of Tree Languages
For a class of hypersubstitutions K, we define the K-solidity of general varieties of tree languages (GVTLs) that contain tree languages over all alphabets, general varieties of finite algebras (GVFAs), and general varieties of finite congruences (GVFCs). We show that if K is a so-called category of substitutions, a GVTL is K-solid exactly in case the corresponding GVFA, or the corresponding GV...
متن کاملVarieties of fuzzy languages
Fuzzy languages and fuzzy automata are considered using techniques from algebraic theory of automata. Syntactic monoids of fuzzy languages play a crucial role in the study. Varieties of fuzzy languages are introduced and an Eilenberg-type correspondence between varieties of fuzzy languages, varieties of ordinary languages and varieties of monoids is established.
متن کاملBorrowing the Verb “ast” and Its Varieties in Arabic Dialect of Sarab
“Borrowing” is a lingual process that is studied in diachronic linguistics. In this process a language borrows elements from another language. This process usually occurs in areas that two languages make contact with each other. In a dialect spoken in South Khorasan the language borrowing happens. Arabs living in this part of Iran probably have immigrated in the early centuries of Islam. In thi...
متن کاملVarieties of Unranked Tree Languages
We study varieties that contain unranked tree languages over all alphabets. Trees are labeled with symbols from two alphabets, an unranked operator alphabet and an alphabet used for leaves only. Syntactic algebras of unranked tree languages are defined similarly as for ranked tree languages, and an unranked tree language is shown to be recognizable iff its syntactic algebra is regular, i.e., a ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2008