A short proof, using graphs and groupoids, is given of Brodskii’s theorem that torsion-free one-relator groups are locally indicable.
@article{urn:eudml:doc:41412, title = {A short proof of a theorem of Brodskii.}, journal = {Publicacions Matem\`atiques}, volume = {44}, year = {2000}, pages = {613-647}, mrnumber = {MR1800825}, zbl = {0983.20025}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:41412} }
Howie, James. A short proof of a theorem of Brodskii.. Publicacions Matemàtiques, Tome 44 (2000) pp. 613-647. http://gdmltest.u-ga.fr/item/urn:eudml:doc:41412/