How many elements of a Coxeter group have a unique reduced expression ?
نویسنده
چکیده
Let (W,R) be an arbitrary Coxeter system. We determine the number of elements of W that have a unique reduced expression.
منابع مشابه
Braided Elements in Coxeter Groups , Ii
We continue the study of freely braided elements of simply laced Coxeter groups, which we introduced in a previous work. A known upper bound for the number of commutation classes of reduced expressions for an element of a simply laced Coxeter group is shown to be achieved only when the element is freely braided; this establishes the converse direction of a previous result. It is also shown that...
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تاریخ انتشار 2017