Centralizers in the Full Transformation Semigroup
نویسندگان
چکیده
منابع مشابه
Combinatorial Deformations of the Full Transformation Semigroup
We define two deformations of the Full Transformation Semigroup algebra. One makes the algebra “as semisimple as possible”, while another leads to an eigenvalue result involving Schur functions. Preliminaries The Full Transformation Semigroup on n letters, denoted Tn, is the semigroup of all set maps w : [n] → [n], where [n] = {1, 2, . . . , n} and the multiplication is the usual composition. S...
متن کاملA Combinatorial Property of the Full Transformation Semigroup
Let c () be the collapse of full transformation semigroup, Tn. Then the general formula to calculate the number of collapsible elements, | tα-1| 2 is derived for all n 0, which is an extension of [1] (A.O. Adeniji and S.O. Makanjuola (2008), ‘On some combinatorial results of collapse and properties of height in full transformation semigroups,’ African Journal of Computing & ICT (Journal of the...
متن کاملGenerating the Full Transformation Semigroup Using Order Preserving Mappings
For a linearly ordered set X we consider the relative rank of the semigroup of all order preserving mappingsOX on X modulo the full transformation semigroup TX . In other words, we ask what is the smallest cardinality of a set A of mappings such that 〈OX ∪A 〉 = TX . When X is countably infinite or well-ordered (of arbitrary cardinality) we show that this number is one, while when X = R (the set...
متن کاملA Study of Graph Closed Subsemigroups of a Full Transformation Semigroup
Let T x be the full transformation semigroup on the set X and let S be a subsemigroup of Tx. We may associate with S a digraph g(5) with X as set of vertices as follows: / —► / e g(<S) iff there exists a 6 S such that a(i) = /. Conversely, for a digraph C having certain properties we may assign a semigroup structure, S(G), to the underlying set of G. We are thus able to establish a "Galois corr...
متن کاملSemigroup Algebras of the Full Matrix Semigroup Over a Finite Field
Let M denote the multiplicative semigroup of all n-by-n matrices over a finite field F and K a commutative ring with an identity element in which the characteristic of F is a unit. It is proved here that the semigroup algebra K[M] is the direct sum of n + 1 algebras, namely, of one full matrix algebra over each of the group algebras K[GL(r, F)] with r = 0, 1, ..., n . The degree of the relevant...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Semigroup Forum
سال: 2013
ISSN: 0037-1912,1432-2137
DOI: 10.1007/s00233-012-9424-0