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 tesseract is an example of a four-dimensional object. Whereas outside mathematics the use of the term dimension is as in: A tesseract has four dimensions , mathematicians usually express this as: The tesseract has dimension 4 , or: The dimension of the tesseract is 4.