In this paper we give a complete isomorphical classification of free topological groups $FM(X)$ of locally compact zero-dimensional separable metric spaces $X$. From this classification we obtain for locally compact zero-dimensional separable metric spaces $X$ and $Y$ that the free topological groups $FM (X)$ and $FM(Y)$ are isomorphic if and only if $C_p(X)$ and $C_p(Y)$ are linearly homeomorphic.
@article{118478, author = {Jan Baars}, title = {Equivalence of certain free topological groups}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {33}, year = {1992}, pages = {125-130}, zbl = {0759.54022}, mrnumber = {1173754}, language = {en}, url = {http://dml.mathdoc.fr/item/118478} }
Baars, Jan. Equivalence of certain free topological groups. Commentationes Mathematicae Universitatis Carolinae, Tome 33 (1992) pp. 125-130. http://gdmltest.u-ga.fr/item/118478/
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