Show that a dominant trading strategy exists if and only if there exists a trading strategy satisfying
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Show that a dominant trading strategy exists if and only if there exists a trading strategy satisfying V0 1(ω) ≥ 0 for all ω ∈ Ω.
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Consider the dominant trading strategy H = (ho h₁ ... hm) satisfying Vo = 0 and V₁ (0) > 0 for all w€ 2. Take Gmin = min G* (w) > 0 @ and define a new trading strategy with ĥm M ho-Gmin-hm Sm(0). Σ m=1 = = hm, m = 1, ... " M and
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