Abstract: A dendroid X is
said to be weakly arcwise open(WAO)
if for each point p of X
each arc component of either
is open or has empty interior. We study various structural properties of these
dendroids: embeddings of any dendroid in a WAO one, and relations between the
WAO dendroids and ones that have the property of Kelley or are smooth.
Keywords and phrases: arc component, continuum, dendroid, property of Kelley, smooth.