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  2. Kruskal–Szekeres coordinates - Wikipedia

    en.wikipedia.org/wiki/Kruskal–Szekeres_coordinates

    The Kruskal–Szekeres coordinates also apply to space-time around a spherical object, but in that case do not give a description of space-time inside the radius of the object. Space-time in a region where a star is collapsing into a black hole is approximated by the Kruskal–Szekeres coordinates (or by the Schwarzschild coordinates). The ...

  3. Skew coordinates - Wikipedia

    en.wikipedia.org/wiki/Skew_coordinates

    A system of skew coordinates is a curvilinear coordinate system where the coordinate surfaces are not orthogonal, [1] in contrast to orthogonal coordinates.. Skew coordinates tend to be more complicated to work with compared to orthogonal coordinates since the metric tensor will have nonzero off-diagonal components, preventing many simplifications in formulas for tensor algebra and tensor ...

  4. Kruskal coordinates - Wikipedia

    en.wikipedia.org/?title=Kruskal_coordinates&...

    From Wikipedia, the free encyclopedia. Redirect page. Redirect to: Kruskal–Szekeres coordinates

  5. JTS Topology Suite - Wikipedia

    en.wikipedia.org/wiki/JTS_Topology_Suite

    JTS is developed under the Java JDK 1.4 platform. It is 100% pure Java. It will run on all more recent JDKs as well. [6] JTS has been ported to the .NET Framework as the Net Topology Suite. A JTS subset has been ported to C++, with entry points declared as C interfaces, as the GEOS library.

  6. Wikipedia : WikiProject Geographical coordinates/comparison

    en.wikipedia.org/wiki/Wikipedia:WikiProject...

    coordinate parameters all gobbled up; display=title, display=inline,title lengthy; Many subtemplates (15-20). Its post-expand include size limits the number of coordinates that can be included in lists (689 times in sample discussed below) rounding problems for dms display; d/m/s are entered in separate fields; not supported by mediawiki

  7. List of Apache Software Foundation projects - Wikipedia

    en.wikipedia.org/wiki/List_of_Apache_Software...

    Excalibur: Java inversion of control framework including containers and components; Falcon: data governance engine; Forrest: documentation framework based upon Cocoon; Giraph: scalable Graph Processing System; Hama: Hama is an efficient and scalable general-purpose BSP computing engine; Harmony: Java SE 5 and 6 runtime and development kit

  8. Pseudo-range multilateration - Wikipedia

    en.wikipedia.org/wiki/Pseudo-range_multilateration

    The vehicle's clock is considered an additional unknown, to be estimated along with the vehicle's position coordinates. If d {\displaystyle d} is the number of physical dimensions being considered (e.g., 2 for a plane) and m {\displaystyle m} is the number of signals received (thus, TOFs measured), it is required that m ≥ d + 1 {\displaystyle ...

  9. C-squares - Wikipedia

    en.wikipedia.org/wiki/C-squares

    C-squares (acronym for the Concise Spatial QUery And REpresentation System) is a system of spatially unique, location-based identifiers for areas on the surface of the earth, represented as cells from a latitude- and longitude-based Discrete Global Grid at a hierarchical set of resolution steps, obtained by progressively subdividing 10×10 degree World Meteorological Organization squares; the ...