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Discrete differential geometry
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<p>Discrete differential geometry is the study of discrete counterparts of notions in <a href="/facts/Differential_geometry/c04XmyLu">differential geometry</a>. Instead of smooth curves and surfaces, there are <a href="/facts/Polygon/yAq7RjPz">polygons</a>, <a href="/facts/Polygon_mesh/6WLD80ER">meshes</a>, and <a href="/facts/Simplicial_complexes/fF2282CF">simplicial complexes</a>. It is used in the study of <a href="/facts/Computer_graphics/lapBE8wv">computer graphics</a>, <a href="/facts/Geometry_processing/Hq3So4MP">geometry processing</a> and <a href="/facts/Topological_combinatorics/M4lIwsSQ">topological combinatorics</a>. </p>