@article{4023,
  abstract     = {Let B be a finite pseudodisk collection in the plane. By the principle of inclusion-exclusion, the area or any other measure of the union is [GRAPHICS] We show the existence of a two-dimensional abstract simplicial complex, X subset of or equal to 2(B), so the above relation holds even if X is substituted for 2(B). In addition, X can be embedded in R(2) SO its underlying space is homotopy equivalent to int Boolean OR B, and the frontier of X is isomorphic to the nerve of the set of boundary contributions.},
  author       = {Edelsbrunner, Herbert and Ramos, Edgar},
  issn         = {0179-5376},
  journal      = {Discrete & Computational Geometry},
  number       = {3},
  pages        = {287 -- 306},
  publisher    = {Springer},
  title        = {{Inclusion-exclusion complexes for pseudodisk collections}},
  doi          = {10.1007/PL00009295},
  volume       = {17},
  year         = {1997},
}