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  1. Ontologies for Plane, Polygonal Mereotopology.Ian Pratt & Oliver Lemon - 1997 - Notre Dame Journal of Formal Logic 38 (2):225-245.
    Several authors have suggested that a more parsimonious and conceptually elegant treatment of everyday mereological and topological reasoning can be obtained by adopting a spatial ontology in which regions, not points, are the primitive entities. This paper challenges this suggestion for mereotopological reasoning in two-dimensional space. Our strategy is to define a mereotopological language together with a familiar, point-based interpretation. It is proposed that, to be practically useful, any alternative region-based spatial ontology must support the same sentences in our language (...)
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  • (1 other version)Process and reality: an essay in cosmology.Alfred North Whitehead - 1929 - New York: Free Press. Edited by David Ray Griffin & Donald W. Sherburne.
    Process and Reality, Whitehead’s magnum opus, is one of the major philosophical works of the modern world, and an extensive body of secondary literature has developed around it. Yet surely no significant philosophical book has appeared in the last two centuries in nearly so deplorable a condition as has this one, with its many hundreds of errors and with over three hundred discrepancies between the American and the English editions, which appeared in different formats with divergent paginations. The work itself (...)
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  • On the complexity of qualitative spatial reasoning: A maximal tractable fragment of the Region Connection Calculus.Jochen Renz & Bernhard Nebel - 1999 - Artificial Intelligence 108 (1-2):69-123.
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  • Modal Logics for Qualitative Spatial Reasoning.Brandon Bennett - 1996 - Logic Journal of the IGPL 4 (1):23-45.
    Spatial reasoning is essential for many AI applications. In most existing systems the representation is primarily numerical, so the information that can be handled is limited to precise quantitative data. However, for many purposes the ability to manipulate high-level qualitative spatial information in a flexible way would be extremely useful. Such capabilities can be proveded by logical calculi; and indeed 1st-order theories of certain spatial relations have been given [20]. But computing inferences in 1st-order logic is generally intractable unless special (...)
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  • (1 other version)Point, line, and surface, as sets of solids.Theodore de Laguna - 1922 - Journal of Philosophy 19 (17):449-461.
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  • A Spatial Logic Based on Regions and Connection.David Randell, Cui A., Cohn Zhan & G. Anthony - 1992 - KR 92:165--176.
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  • A calculus of individuals based on "connection".Bowman L. Clarke - 1981 - Notre Dame Journal of Formal Logic 22 (3):204-218.
    Although Aristotle (Metaphysics, Book IV, Chapter 2) was perhaps the first person to consider the part-whole relationship to be a proper subject matter for philosophic inquiry, the Polish logician Stanislow Lesniewski [15] is generally given credit for the first formal treatment of the subject matter in his Mereology.1 Woodger [30] and Tarski [24] made use of a specific adaptation of Lesniewski's work as a basis for a formal theory of physical things and their parts. The term 'calculus of individuals' was (...)
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  • Individuals and points.Bowman L. Clark - 1985 - Notre Dame Journal of Formal Logic 26 (1):61-75.
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  • A complete axiom system for polygonal mereotopology of the real plane.Ian Pratt & Dominik Schoop - 1998 - Journal of Philosophical Logic 27 (6):621-658.
    This paper presents a calculus for mereotopological reasoning in which two-dimensional spatial regions are treated as primitive entities. A first order predicate language ℒ with a distinguished unary predicate c(x), function-symbols +, · and - and constants 0 and 1 is defined. An interpretation ℜ for ℒ is provided in which polygonal open subsets of the real plane serve as elements of the domain. Under this interpretation the predicate c(x) is read as 'region x is connected' and the function-symbols and (...)
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  • Expressivity in polygonal, plane mereotopology.Ian Pratt & Dominik Schoop - 2000 - Journal of Symbolic Logic 65 (2):822-838.
    In recent years, there has been renewed interest in the development of formal languages for describing mereological (part-whole) and topological relationships between objects in space. Typically, the non-logical primitives of these languages are properties and relations such as `x is connected' or `x is a part of y', and the entities over which their variables range are, accordingly, not points, but regions: spatial entities other than regions are admitted, if at all, only as logical constructs of regions. This paper considers (...)
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