Realization of a certain class of semi-groups as value semi-groups of valuations

Realization of a Certain Class of Semi-Groups as Value Semi-Groups of Valuations

A land covers classification system for environment assessment in semi-arid regions of Iran

Land degradation is a major danger which restricting different areas of Iran. Systematic description of the environmentfor detection of environmental changes and the human-related causes and responses is essential in land cover changestudy. Use of land cover data allow detection of where certain changes occur, what type of change, as well as how theland is changing. Existing systems for classif...

Divergence in Lattices in Semisimple Lie Groups and Graphs of Groups

Divergence functions of a metric space estimate the length of a path connecting two points A, B at distance ≤ n avoiding a large enough ball around a third point C. We characterize groups with non-linear divergence functions as groups having cut-points in their asymptotic cones. That property is weaker than the property of having Morse (rank 1) quasi-geodesics. Using our characterization of Mor...

ASSOCIATED (SEMI)HYPERGROUPS FROM DUPLEXES

In this paper using strongly duplexes we introduce a new class of (semi)hypergroups. The associated (semi)hypergroup from a strongly duplex is called duplex (semi)hypergroup. Two computer programs written in MATLAB show that the two groups $Z_{2n}$ and $Z_{n}times Z_{2}$ produce a strongly duplex and its associated hypergroup is a complementary feasible hypergroup.

Fixed Point Theorems for semi $lambda$-subadmissible Contractions in b-Metric spaces

Here, a new certain class of contractive mappings in the b-metric spaces is introduced. Some fixed point theorems are proved which generalize and modify the recent results in the literature. As an application, some results in the b-metric spaces endowed with a partial ordered are proved.