POSITION OF SINGULARITIES AND FUNDAMENTAL GROUP OF THE COMPLEMENT OF A UNION OF LINES

In this paper we give two examples of complex line arrangements in CP2 with 7 lines, that both have 3 triple points and 12 double points, an d their complements have nonisomorphic global fundamental groups. Thes e two line arrangements are, in some sense, a much simpler example of a pair of plane algebraic curves that have the same local topology but have complements with different global topology-compare with the exam ple given by Zariski, or the recent example given by Artal-Bartolo.