The dystonias are movement disorders in which sustained muscle contractions cause twisting and repetitive movements or abnormal postures. The movements, which are involuntary and sometimes painful, may affect a single muscle; a group of muscles such as those in the arms, legs, or neck; or the entire body.
Definition of Data Clustering. Data Clustering is the classification of a data set into a group of numbers, where members of each group surround a particular number.efinition of Data Clustering. Data Clustering is the classification of a data set into a group of numbers, where members of each group surround a particular number.
a mathematical constant is a special number usually a real number that is significantly interesting in some way constants arise in many areas of mathematics with constants such as e and Ï occurring in such diverse contexts as geometry number theory and calculushe constant Ï pi has a natural definition in euclidean geometry the ratio between the circumference and diameter of a circle but may be found in many places in mathematics for example the gaussian integral in complex analysis the roots of unity in number theory and cauchy distributions in probability