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v2007.09.13 - Convex Optimization

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2.10. CONIC INDEPENDENCE (C.I.) 125Hx 2x 30∂HFigure 39: Minimal set of generators X = [x 1 x 2 x 3 ]∈ R 2×3 for halfspaceabout origin.x 12.10.3 Utility of conic independencePerhaps the most useful application of conic independence is determinationof the intersection of closed convex cones from their halfspace-descriptions,or representation of the sum of closed convex cones from theirvertex-descriptions.⋂KiA halfspace-description for the intersection of any number of closedconvex cones K i can be acquired by pruning normals; specifically,only the conically independent normals from the aggregate of all thehalfspace-descriptions need be retained.∑KiGenerators for the sum of any number of closed convex cones K i canbe determined by retaining only the conically independent generatorsfrom the aggregate of all the vertex-descriptions.Such conically independent sets are not necessarily unique or minimal.

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