The Griffiths space and the harmonic archipelago

I recently showed in “The Griffiths double cone group is isomorphic to the triple” (see the arXiv preprint here) that the fundamental group of the Griffiths space is isomorphic to that of the harmonic archipelago. Jeremy Brazas kindly invited me to give a roadmap of the essential ideas through a series of guest posts on his blog. The first of the three posts can be accessed here. Enjoy!

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