%0 Journal Article %T A Geometric Proof of a Faithful Linear-Categorical Surface Mapping Class Group Action %A Kyler Siegel %J Mathematics %D 2011 %I arXiv %X We give completely combinatorial proofs of the main results of [3] using polygons. Namely, we prove that the mapping class group of a surface with boundary acts faithfully on a finitely-generated linear category. Along the way we prove some foundational results regarding the relevant objects from bordered Heegaard Floer homology, %U http://arxiv.org/abs/1108.3676v1