The following list of errata is regularly updated. Underlined bold font is used to highlight corrections within the context of the entire sentence. If you notice an error that is not listed below, please let us know by submitting an erratum.

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Date | Pages | Description |

03/15/2005 | 17 | Pathway from house on figure 1.12b (Vector) should be straight. |

08/19/2004 | 59 | Final sentence should read: "Such a relationship is call involutory."ed |

29/11/2004 | 104 | Definition of closure should read: "Let S be a topological space and X be a subset of points of S. Then the closure of X is the union of
with the set of all its near points." X |

02/12/2004 | 113 | The definition of strongly connected should read: "A set X in the Euclidean plane with the usual topology is strongly connected if it is not weakly connected."connected and |

01/06/2006 | 115 | Fourth sentence of final paragraph should read: "This is rectified by ... decomposing the original simplexes ab and cdef ..." |

29/11/2004 | 117 & 118 | On p118, the direction of the arrows on Figure 3.39 should be reversed for directed arcs 3 and 4. As a result, the corresponding sentence on p117 should read: "Thus we have found two cycles [1,2] and ."[4,3] |

17/01/2010 | 121 | An edge connecting the two middle nodes is missing from Figure 3.44b. This edge must be added for the graph to be non-planar---specifically the graph K(3,3). |

17/11/2005 | 130 | Final sentence of first paragraph should read: "... all transformations are also similarity transformations ..."affine |

05/26/2005 | 184 | SQL statement should read: "SELECT ARC_ID FROM DCEL WHERE LEFT_AREA= OR RIGHT_AREA=XX" |

05/25/2005 | 185 | Final sentence of first paragraph should read: "The object- representation ..."DCEL |

06/15/2006 | 197 | Figure 5.25. The points p, q, and r should be labeled q, r, and p respectively (see this corrected diagram for clarification). |

12/15/2006 | 237 | Figure 6.13. Labels SE and SW should be swapped for one another. Left to right the labels should read: NW, NE, , SW.SE |

06/18/2006 | 248 | Figure 6.24. Node 3 should additionally have node 14 as its second descendant. |

01/06/2006 | 253 | Figure 6.29. The left-hand edge of rectangle P should overlap the left-hand edges of rectangles T and W |

02/15/2005 | 264 | Definition of information community should read: "Groups that use semantically conventions and terminology are often called homogeneousinformation communities." |

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Date | Pages | Description |

03/15/2005 | 17 | Pathway from house on figure 1.12b (Vector) should be straight. |

08/19/2004 | 59 | Final sentence should read: "Such a relationship is call involutory."ed |

29/11/2004 | 104 | Definition of closure should read: "Let S be a topological space and X be a subset of points of S. Then the closure of X is the union of
with the set of all its near points." X |

02/12/2004 | 113 | The definition of strongly connected should read: "A set X in the Euclidean plane with the usual topology is strongly connected if it is not weakly connected."connected and |

01/06/2006 | 115 | Fourth sentence of final paragraph should read: "This is rectified by ... decomposing the original simplexes ab and cdef ..." |

29/11/2004 | 117 & 118 | On p118, the direction of the arrows on Figure 3.39 should be reversed for directed arcs 3 and 4. As a result, the corresponding sentence on p117 should read: "Thus we have found two cycles [1,2] and ."[4,3] |

17/01/2010 | 121 | An edge connecting the two middle nodes is missing from Figure 3.44b. This edge must be added for the graph to be non-planar---specifically the graph K(3,3). |

17/11/2005 | 130 | Final sentence of first paragraph should read: "... all transformations are also similarity transformations ..."affine |

05/26/2005 | 184 | SQL statement should read: "SELECT ARC_ID FROM DCEL WHERE LEFT_AREA= OR RIGHT_AREA=XX" |

05/25/2005 | 185 | Final sentence of first paragraph should read: "The object- representation ..."DCEL |

06/15/2006 | 197 | Figure 5.25. The points p, q, and r should be labeled q, r, and p respectively (see this corrected diagram for clarification). |

12/15/2006 | 237 | Figure 6.13. Labels SE and SW should be swapped for one another. Left to right the labels should read: NW, NE, , SW.SE |

06/18/2006 | 248 | Figure 6.24. Node 3 should additionally have node 14 as its second descendant. |

01/06/2006 | 253 | Figure 6.29. The left-hand edge of rectangle P should overlap the left-hand edges of rectangles T and W |

02/15/2005 | 264 | Definition of information community should read: "Groups that use semantically conventions and terminology are often called homogeneousinformation communities." |