A set X CR is convex if Xx + (1 - A) y X, Vx,...

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A set X CR" is convex if Xx + (1 - A) y ≤ X, Vx, y ≤ X, λ = [0, 1] (1) Show that the set of frontier portfolios is convex (in the space of portfolio weights). Likewise, show that the set of mean-variance efficient portfolios is convex. A set X CR" is convex if Xx + (1 - A) y ≤ X, Vx, y ≤ X, λ = [0, 1] (1) Show that the set of frontier portfolios is convex (in the space of portfolio weights). Likewise, show that the set of mean-variance efficient portfolios is convex.

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The set of efficient portfolios is a convex set However this does not mean that the frontier of this ... View the full answer