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martingale, as required by the theory, but a strict local martingale with consequences on the validity of the risk … filtration set so that an absolutely continuous strict local martingale, once projected on it, becomes continuous with jumps …
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A new method to retrieve the risk-neutral probability measure from observed option prices is developed and a closed form pricing formula for European options is obtained by employing a modified Gram-Charlier series expansion, known as the Gauss-Hermite expansion. This expansion converges for...
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