An isoperimetric inequality for planar triangulations
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isoperimetricanalogueboundaryclassicalcurvaturedegreediscretegiven
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We prove a discrete analogue to a classical isoperimetric theorem of Weil for surfaces with non-positive curvature. It is shown that hexagons in the triangular lattice have maximal volume among all sets of a given boundary in any triangulation with minimal degree 6.
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