In general, the term boundary is something that encloses a of a region of space, a territory, and/or an area. Something enclosed by a boundary, is "bounded" (by the boundary). See also border.
For the boundary of a topological manifold, see: manifold,
As a psychological term, boundary can mean a mental separation which we keep between ourselves and others. Sometimes this can be referred to as personal space. Addicts use boundaries to keep themselves sober.
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On closer inspection, the spatial boundaries of physical objects are imaginary entities surrounding swarms of subatomic particles, and their exact shape and location involve the same degree of arbitrariness as those of a mathematical graph smoothed out of scattered and inexact data (or those of the figures of an impressionist painting).
For boundaries of the fiat sort a de dicto account suggests itself naturally: insofar as the process leading to the definition of a boundary may not be precise, the question of whether something lies inside or outside the boundary may be semantically indeterminate.
Boundaries cannot exist in isolation from the entities they bound, though there may be disagreement as to whether this ontological dependence is generic (a boundary cannot exist except as a boundary of something) or specific (the boundary of something cannot exist except as a boundary of that thing) (Brentano 1976; Chisholm 1984).
The position of the 1st Judge shall be marked at a point 0.5m from the corner of boundary line #1 and boundary line #2.
The position of the 4th Judge shall be marked at a point 0.5m from the corner of boundary line #4 and boundary line #1.
The position of the Recorder shall be marked at a point 2m back from boundary line #1 facing the Competition Area 2m adjacent to the corner of boundary line #1 and boundary line#2.
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