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Redundancy of the non-arbitrage assumption for forward utilities
Non-arbitrage redundancy conjecture. The non-arbitrage assumption ${\cal Z}_{loc}^e(P)\neq\emptyset$ is redundant when $U$ is a forward utility.
Conjecturesolvedforward-utilities mathematical-finance no-arbitragearXiv posted 3 days ago

Redundancy of the non-arbitrage assumption for forward utilities