Trivariate support of flat-volatility forward Libor rates

F. Jamshidian

    Research output: Contribution to journalArticleAcademicpeer-review

    2 Citations (Scopus)


    This paper investigates the multivariate support of forward Libor rates in the onefactor, constant volatilities Libor market model. The comparatively simple bivariate case was solved in Jamshidian (2008) in connection to the recent finding by Davis and Mataix-Pastor (2007) of positive probability of negative Libor rates in the swap market model. The approach here builds on Jamshidian (2008) but becomes really effective only in the trivariate case, and there particularly for a special “flat-volatility‿ case, leading to an analytic solution. The main idea is a certain recursion in the Libor market model bymeans of which the calculation of the support is reduced to a calculus of variation problem (with bounds on the slope).
    Original languageEnglish
    Pages (from-to)229-258
    Number of pages30
    JournalMathematical finance
    Issue number2
    Publication statusPublished - 2010


    • EWI-22231
    • MSC-60H30
    • MSC-91B70
    • MSC-91G80
    • Libor market model
    • Euler–Lagrange equation
    • constrained functional optimization
    • IR-81466
    • Brownian motion
    • Beltrami identity
    • Support


    Dive into the research topics of 'Trivariate support of flat-volatility forward Libor rates'. Together they form a unique fingerprint.

    Cite this