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Commit 2023-06-09 01:23 74f1d619

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feat(analysis/convex/cone/proper): define proper cone (#18913) Part of #16266 We define proper cones as nonempty, closed cones and define duals. Next todo: Prove Farkas' lemma from #19008

Estimated changes

added theorem convex_cone.closure_eq
modified theorem convex_cone.coe_closure
added theorem proper_cone.coe_dual
added theorem proper_cone.coe_map
added theorem proper_cone.coe_zero
added def proper_cone.dual
added theorem proper_cone.dual_dual
added theorem proper_cone.ext'
added theorem proper_cone.ext
added theorem proper_cone.map_id
added theorem proper_cone.mem_coe
added theorem proper_cone.mem_dual
added theorem proper_cone.mem_map
added theorem proper_cone.mem_zero
added structure proper_cone