43 citations · 111 across the 10 of their papers we have counts for
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math.GT2011★ 1 cited
Combinatorial R-trees as generalized Cayley graphs for fundamental groups of one-dimensional spaces
Hanspeter Fischer, Andreas Zastrow
In their study of fundamental groups of one-dimensional path-connected compact metric spaces, Cannon and Conner have asked: Is there a tree-like object that might be considered the…
math.GR2011
The word problem for some uncountable groups given by countable words
Oleg Bogopolski, Andreas Zastrow
We investigate the fundamental group of Griffiths' space, and the first singular homology group of this space and of the Hawaiian Earring by using (countable) reduced tame words. W…
math.GT2011★ 43 cited
On semilocally simply connected spaces
Hanspeter Fischer, Dušan Repovš, Ziga Virk +1
The purpose of this paper is: (i) to construct a space which is semilocally simply connected in the sense of Spanier even though its Spanier group is non-trivial; (ii) to propose a…