On Maltsev Conditions associated with omitting certain types of local structures
ثبت نشده
چکیده
Tame congruence theory identifies six Maltsev conditions associated with locally finite varieties omitting certain subsets of types of local behaviour. Extending a result of Siggers, we show that of these six Maltsev conditions only two of them are equivalent to strong Maltsev conditions for locally finite varieties. Besides omitting the unary type [18], the only other of these conditions that is strong is that of omitting the unary and affine types. We also present a Maltsev condition that is similar in form to having a Taylor term but that is associated with omitting the unary, affine, and semilattice local types.
منابع مشابه
Characterizations of Several Maltsev Conditions
Tame congruence theory identifies six Maltsev conditions associated with locally finite varieties omitting certain types of local behaviour. Extending a result of Siggers, we show that of these six Maltsev conditions only two of them are equivalent to strong Maltsev conditions for locally finite varieties. Besides omitting the unary type [24], the only other of these conditions that is strong i...
متن کاملDeciding some Maltsev conditions in finite idempotent algebras
In this paper we investigate the computational complexity of deciding if a given finite algebraic structure satisfies a certain type of existential condition on its set of term operations. These conditions, known as Maltsev conditions, have played a central role in the classification, study, and applications of general algebraic structures. Several well studied properties of equationally define...
متن کاملAnalysis of Spatial Imbalance Associated with Rural Settlements in Iran
Spatial distributions of rural settlements in Iran represent an imbalanced nature. The major objective of this study is to investigate the spatial patterns of Iranian rural settlements using certain indicators and indices .It further tries to propose a model regarding the analysis of spatial imbalances. This study further supported by application of modifiable areal unit problem(MAUP) suitable ...
متن کاملAIDS Epidemic Modeling With Different Demographic Structures
The most urgent public health problem today is to devise effective strategies to minimize the destruction caused by the AIDS epidemic. Mathematical models based on the underlying transmission mechanisms of the AIDS virus can help the medical/scientific community understand and anticipate its spread in different populations and evaluate the potential effectiveness of different approaches for bri...
متن کاملStructural Study of Wooden Abacus in Ashtbin Village Based on Samples in "Boonehghi"
Ecological materials are one of the characteristics of traditional Iranian architecture; this means according to the geography of each region, the specific materials of the same climate have been used. The village of Ashtbin, located on the banks of the Aras River, is a perfect example of this traditional Iranian architecture where wood and stone are its main indigenous materials. In some old h...
متن کامل