Let I n be the class of all signed involutions in the hyperoctahedral group Bn and let I n (T) be the set of involutions in I n which avoid a set T of signed patterns. In this paper, we complete a further case of the program initiated by Simion and Schmidt  by enumerating I n (T) for all signed permutations T⊆B2.
|Number of pages||17|
|Journal||Annals of Combinatorics|
|Publication status||Published - Dec 2007|
- pattern avoidance
- signed patterns