Wolfram Function Repository
Instant-use add-on functions for the Wolfram Language
Function Repository Resource:
Produce causal graphs by dynamically triangulating a flat (Minkowski) spacetime
ResourceFunction["FlatSpacetimeTriangulation"][dim,meas] produces a dynamical triangulation of a flat (Minkowski) spacetime of dimension (dim-1)+1 into simplices with maximum measure (e.g. area, volume, etc.) meas. | |
ResourceFunction["FlatSpacetimeTriangulation"][dim,meas,"prop"] gives the property "prop" for the specified flat (Minkowski) spacetime triangulation. |
| "CausalGraphFull" | full causal partial-order graph (before transitive reduction) |
| "CausalGraph" | transitively reduced causal partial-order graph |
| "TriangulatedCausalGraphFull" | full causal partial-order graph using only triangulation edges (before transitive reduction) |
| "TriangulatedCausalGraph" | transitively reduced triangulated causal partial-order graph |
| "Points" | plot of the points in the triangulation (without causal edges) |
| "PointsList" | list of spacetime coordinates of all points in the triangulation |
| "PointsCount" | number of points in the triangulation |
| "Dimensions" | number of dimensions in the continuum spacetime approximation |
| "TriangulatedEdgeList" | list of (undirected) edges that appear in the triangulation of the spacetime surface |
| "TriangulatedEdgeCount" | number of (undirected) edges that appear in the triangulation of the spacetime surface |
| "MaximumCellMeasure" | maximum measure (e.g. area, volume, etc.) meas of the simplices appearing in the triangulation |
| "TotalEdgeCount" | total number of causal edges (before transitive reduction) |
| "ReducedEdgeCount" | number of transitively reduced causal edges |
| "TotalTriangulatedEdgeCount" | total number of causal edges that are also triangulation edges (before transitive reduction) |
| "ReducedTriangulatedEdgeCount" | number of transitively reduced causal edges that are also triangulation edges |
| "PureCausalGraphFull" | full causal partial-order graph (before transitive reduction) with vertex coordinate information removed |
| "PureCausalGraph" | transitively reduced causal partial-order graph with vertex coordinate information removed |
| "PureTriangulatedCausalGraphFull" | full causal partial-order graph using only triangulation edges (before transitive reduction) with vertex coordinate information removed |
| "PureTriangulatedCausalGraph" | transitively reduced triangulated causal partial-order graph with vertex coordinate information removed |
| "MeshRegion" | mesh region corresponding to the triangulated spacetime surface |
| "MeshConnectivityGraph" | connectivity graph of the mesh region corresponding to the triangulated spacetime surface |
| "Properties" | list of properties |
Produce a triangulation of a 1+1-dimensional flat (Minkowski) spacetime into simplices of measure (area) up to 0.05:
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Show the causal graph:
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Show the full causal graph (without transitive reduction):
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Show the causal graph using only triangulation edges:
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Produce a triangulation of a 1+1-dimensional flat (Minkowski) spacetime into smaller simplices of measure (area) up to 0.01 instead:
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Show the causal graph:
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Show the mesh region corresponding to the triangulated spacetime surface:
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Show the connectivity graph of this mesh region:
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Show the full triangulated causal graph (without transitive reduction):
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Produce a triangulation of a 2+1-dimensional flat (Minkowski) spacetime into simplices of measure (volume) up to 1:
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Show the causal graph:
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Show the pure causal graph (with vertex coordinate information removed):
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Show only the pure triangulated causal graph (with vertex coordinate information removed):
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Triangulations can be produced for 0+1-dimensional spacetimes:
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Show the pure causal graph:
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Produce a triangulation of a 1+1-dimensional spacetime:
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Show the pure causal graph:
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Produce a triangulation of a 2+1-dimensional spacetime:
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Show the pure causal graph:
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Properties can be requested directly from FlatSpacetimeTriangulation:
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Produce a triangulation of a 1+1-dimensional flat (Minkowski) spacetime into simplices of measure (area) up to 0.005:
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Show the complete list of properties:
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Show the full causal graph:
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Show the transitively-reduced causal graph:
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Show the full causal graph using only triangulation edges:
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Show the transitively-reduced causal graph using only triangulation edges:
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Plot the positions of the points in the triangulation only (without causal edges):
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Show a complete list of spacetime coordinates for the points in the triangulation (the last coordinate is always the time coordinate):
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Show the number of points in the triangulation:
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Show the number of dimensions in the background spacetime:
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Show the first 50 (undirected) edges in the triangulation of the spacetime surface:
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Show the total number of (undirected) edges in the triangulation of the spacetime surface:
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Show the maximum measure (in this case, area) of the simplices in the triangulation:
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Show the total number of causal edges:
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Show the number of causal edges after transitive reduction:
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Show the total number of causal edges appearing in the triangulation:
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Show the number of causal edges appearing in the triangulation after transitive reduction:
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Show the pure full causal graph (with vertex coordinate information removed):
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Show the pure transitively-reduced causal graph (with vertex coordinate information removed):
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Show the pure full causal graph using only triangulation edges (with vertex coordinate information removed):
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Show the pure transitively-reduced causal graph using only triangulation edges (with vertex coordinate information removed):
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Show the mesh region corresponding to the triangulated spacetime surface:
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Show the connectivity graph of this mesh region:
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