TY  - JOUR
A1  - Denecke, Klaus-Dieter
A1  - Wismath, Shelly
T1  - The dimension of a variety and the kernel of a hypersubstitution
N2  - The dimension of a variety V of algebras of a given type was introduced by E. Graczynska and D. Schweigert in [7] as the cardinality of the set of all derived varieties of V which are properly contained in V. In this paper, we characterize all solid varieties of dimensions 0, 1, and 2; prove that the dimension of a variety of finite type is at most N-0; give an example of a variety which has infinite dimension; and show that for every n is an element of N there is a variety with dimension n. Finally, we show that the dimension of a variety is related to the concept of the semantical kernel of a hypersubstitution and apply this connection to calculate the dimension of the class of all algebras of type tau = (n).
Y1  - 2009
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/31618
UR  - http://www.worldscinet.com/ijac/
SN  - 0218-1967
ER  -