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math.GT2011★ 2 cited
On the structure of conjugation-free fundamental groups of conic-line arrangements
Michael Friedman, David Garber
The fundamental group of the complement of a hyperplane arrangement plays an important role in studying the corresponding arrangements. In particular, for large families of hyperpl…
math.AG2011
On fundamental groups related to degeneratable surfaces: conjectures and examples
Michael Friedman, Mina Teicher
We argue that for a smooth surface S, considered as a ramified cover over the projective plane branched over a nodal-cuspidal curve B one could use the structure of the fundamental…