A grounded 1-bend string graph is an intersection graph of a set of polygonallines, each with one bend, such that the lines lie above a common horizontal line . We show that finding a maximum clique is APX-hard, even for strictly $y$-monotone strings . We give fast algorithms to compute a maximum . clique for different subclasses of grounded segment graphs, which are formed by restricting the strings to various forms of $L$-shapes . We also give algorithms to find a maximum

Author(s) : J. Mark Keil, Debajyoti Mondal, Ehsan Moradi, Yakov Nekrich

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Keywords : maximum - bend - graph - grounded - clique -

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