We establish an exact formula for the word distance on the discrete Heisenberg group ℍ₃ with its standard set of generators. This formula is then used to prove the almost connectedness of the spheres for this distance.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-cm95-1-2,
author = {S\'ebastien Blach\`ere},
title = {Word distance on the discrete Heisenberg group},
journal = {Colloquium Mathematicae},
volume = {96},
year = {2003},
pages = {21-36},
zbl = {1010.05034},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-cm95-1-2}
}
Sébastien Blachère. Word distance on the discrete Heisenberg group. Colloquium Mathematicae, Tome 96 (2003) pp. 21-36. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-cm95-1-2/