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http://dx.doi.org/10.1093/jjfinec/nbh006

has been cited by the following article:

• TITLE: On the Solution of the Multi-Asset Black-Scholes Model: Correlations, Eigenvalues and Geometry

  AUTHORS: Mauricio Contreras, Alejandro Llanquihuén, Marcelo Villena

  KEYWORDS: Multi-Asset Black-Scholes Equation, Wei-Norman Theorem, Correlation Matrix Eigenvalues, Kummer Surface, Propagators

  JOURNAL NAME: Journal of Mathematical Finance, Vol.6 No.4, October 14, 2016

  ABSTRACT: In this paper, the multi-asset Black-Scholes model is studied in terms of the importance that the correlation parameter space (equivalent to an N dimensional hypercube) has in the solution of the pricing problem. It is shown that inside of this hypercube there is a surface, called the Kummer surface ∑k, where the determinant of the correlation matrix ρ is zero, so the usual formula for the propagator of the N asset Black-Scholes equation is no longer valid. Worse than that, in some regions outside this surface, the determinant of ρ becomes negative, so the usual propagator becomes complex and divergent. Thus the option pricing model is not well defined for these regions outside ∑k. On the Kummer surface instead, the rank of the ρ matrix is a variable number. By using the Wei-Norman theorem, the propagator over the variable rank surface ∑k for the general N asset case is computed. Finally, the three assets case and its implied geometry along the Kummer surface is also studied in detail.