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Appl. Probab.</a> <a href="/?q=in%3A340766" title="Articles in this Issue">51, No. 4, 930-942 (2014)</a>. </div> <div class="abstract">Summary: We derive multivariate moment generating functions for the conditional and stationary distributions of a discrete sample path of \(n\) observations of a square-root diffusion (CIR) process \(X(t)\). For any fixed vector of observation times \(t_1,\dots , t_n\), we find the conditional joint distribution of \((X(t_1),\dots , X(t_n))\) is a multivariate noncentral chi-squared distribution and the stationary joint distribution is a Krishnamoorthy-Parthasarathy multivariate gamma distribution. Multivariate cumulants of the stationary distribution have a simple and computationally tractable expression. We also obtain the moment generating function for the increment \(X(t+\delta)-X(t)\), and show that the increment is equivalent in distribution to a scaled difference of two independent draws from a gamma distribution.</div> <div class="clear"></div> <br> <div class="citations"><div class="clear"><a href="/?q=rf%3A6408795">Cited in <strong>1</strong> Document</a></div></div> <div class="classification"> <h3>MSC:</h3> <table><tr> <td> <a class="mono" href="/classification/?q=cc%3A60J60" title="MSC2020">60J60</a> </td> <td class="space"> Diffusion processes </td> </tr><tr> <td> <a class="mono" href="/classification/?q=cc%3A60G17" title="MSC2020">60G17</a> </td> <td class="space"> Sample path properties </td> </tr><tr> <td> <a class="mono" href="/classification/?q=cc%3A60E10" title="MSC2020">60E10</a> </td> <td class="space"> Characteristic functions; other transforms </td> </tr></table> </div><div class="keywords"> <h3>Keywords:</h3><a href="/?q=ut%3Asquare-root+diffusion+process">square-root diffusion process</a>; <a href="/?q=ut%3Amoment+generating+functions">moment generating functions</a>; <a href="/?q=ut%3Astationary+distributions">stationary distributions</a>; <a href="/?q=ut%3Adiscrete+sample+path">discrete sample path</a>; <a href="/?q=ut%3ABell+polynomial">Bell polynomial</a>; <a href="/?q=ut%3AKibble-Moran+distribution">Kibble-Moran distribution</a>; <a href="/?q=ut%3AKrishnamoorthy-Parthasarathy+distribution">Krishnamoorthy-Parthasarathy distribution</a>; <a href="/?q=ut%3Amultivariate+noncentral+chi-squared+distribution">multivariate noncentral chi-squared distribution</a>; <a href="/?q=ut%3Amultivariate+gamma+distribution">multivariate gamma distribution</a></div> <!-- Modal used to show zbmath metadata in different output formats--> <div class="modal fade" id="metadataModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel"> <div class="modal-dialog" role="document"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button> <h4 class="modal-title" id="myModalLabel">Cite</h4> </div> <div class="modal-body"> <div class="form-group"> <label for="select-output" class="control-label">Format</label> <select id="select-output" class="form-control" aria-label="Select Metadata format"></select> </div> <div class="form-group"> <label for="metadataText" class="control-label">Result</label> <textarea class="form-control" id="metadataText" rows="10" style="min-width: 100%;max-width: 100%"></textarea> </div> <div id="metadata-alert" class="alert alert-danger" role="alert" style="display: none;"> <!-- alert for connection errors etc --> </div> </div> <div class="modal-footer"> <button type="button" class="btn btn-primary" onclick="copyMetadata()">Copy to clipboard</button> <button type="button" class="btn btn-default" data-dismiss="modal">Close</button> </div> </div> </div> </div> <div class="functions clearfix"> <div class="function"> <!-- Button trigger metadata modal --> <a type="button" class="btn btn-default btn-xs pdf" data-toggle="modal" data-target="#metadataModal" data-itemtype="Zbl" data-itemname="Zbl 1326.60115" data-ciurl="/ci/06408795" data-biburl="/bibtex/06408795.bib" data-amsurl="/amsrefs/06408795.bib" data-xmlurl="/xml/06408795.xml" > Cite </a> <a class="btn btn-default btn-xs pdf" data-container="body" type="button" href="/pdf/06408795.pdf" title="Zbl 1326.60115 as PDF">Review PDF</a> </div> <div class="fulltexts"> <span class="fulltext">Full Text:</span> <a class="btn btn-default btn-xs" type="button" href="https://projecteuclid.org/euclid.jap/1421763319" title="Full Text at Project Euclid">Euclid</a> </div> <div class="sfx" style="float: right;"> </div> </div> <div class="references"> <h3>References:</h3> <table><tr> <td>[1]</td> <td class="space">Alfonsi, A. (2010). Cox-Ingersoll-Ross (CIR) model. In Encyclopedia of Quantitative Finance , ed. R. Cont. John Wiley, Chichester, pp. 401-403.</td> </tr><tr> <td>[2]</td> <td class="space">Chan, K. C., Karolyi, G. A., Longstaff, F. A. and Sanders, A. B. (1992). An empirical comparison of alternative models of the short-term interest rate. J. Finance 47, 1209-1227.</td> </tr><tr> <td>[3]</td> <td class="space">Comtet, L. (1974). Advanced Combinatorics: The Art of Finite and Infinite Expansions . Reidel, Dordrecht. · <a href="/0283.05001" class="nowrap">Zbl 0283.05001</a></td> </tr><tr> <td>[4]</td> <td class="space">Cont, R. and Tankov, P. (2004). Financial Modelling with Jump Processes . Chapman & Hall/CRC, Boca Raton, FL. · <a href="/1052.91043" class="nowrap">Zbl 1052.91043</a> · <a href="https://doi.org/10.1201/9780203485217" class="nowrap">doi:10.1201/9780203485217</a></td> </tr><tr> <td>[5]</td> <td class="space">Cox, J. C., Ingersoll, J. E., Jr. and Ross, S. A. (1985). A theory of the term structure of interest rates. Econometrica 53, 385-407. · <a href="/1274.91447" class="nowrap">Zbl 1274.91447</a> · <a href="https://doi.org/10.2307/1911242" class="nowrap">doi:10.2307/1911242</a></td> </tr><tr> <td>[6]</td> <td class="space">Feller, W. (1951). Two singular diffusion problems. Ann. Math. (2) 54, 173-182. · <a href="/0045.04901" class="nowrap">Zbl 0045.04901</a> · <a href="https://doi.org/10.2307/1969318" class="nowrap">doi:10.2307/1969318</a></td> </tr><tr> <td>[7]</td> <td class="space">Gordy, M. B. (2012). On the distribution of a discrete sample path of a square-root diffusion. Res. Rep. 2012-12, Federal Reserve Board.</td> </tr><tr> <td>[8]</td> <td class="space">Horn, R. A. and Johnson, C. R. (1985). Matrix Analysis . Cambridge University Press. · <a href="/0576.15001" class="nowrap">Zbl 0576.15001</a> · <a href="https://doi.org/10.1017/CBO9780511810817" class="nowrap">doi:10.1017/CBO9780511810817</a></td> </tr><tr> <td>[9]</td> <td class="space">Jensen, D. R. (1969). Limit properties of noncentral multivariate Rayleigh and chi-square distributions. SIAM J. Appl. Math. 17, 802-814. · <a href="/0181.46102" class="nowrap">Zbl 0181.46102</a> · <a href="https://doi.org/10.1137/0117072" class="nowrap">doi:10.1137/0117072</a></td> </tr><tr> <td>[10]</td> <td class="space">Jiang, G. J. and Knight, J. L. (2002). Estimation of continuous-time processes via the empirical characteristic function. J. Bus. Econom. Statist. 20, 198-212.</td> </tr><tr> <td>[11]</td> <td class="space">Johnson, N. L., Kotz, S. and Balakrishnan, N. (1994). Continuous Univariate Distributions , Vol. 1, 2nd edn. John Wiley, New York. · <a href="/0811.62001" class="nowrap">Zbl 0811.62001</a></td> </tr><tr> <td>[12]</td> <td class="space">Kotz, S., Balakrishnan, N. and Johnson, N. L. (2000). Continuous Multivariate Distributions , Vol. 1, Models and Applications , 2nd edn. John Wiley, New York. · <a href="/0946.62001" class="nowrap">Zbl 0946.62001</a></td> </tr><tr> <td>[13]</td> <td class="space">Krishnamoorthy, A. S. and Parthasarathy, M. (1951). A multivariate gamma-type distribution. Ann. Math. Statist. 22, 549-557. (Correction: 31 (1960), p. 229.) · <a href="/0045.07102" class="nowrap">Zbl 0045.07102</a> · <a href="https://doi.org/10.1214/aoms/1177729544" class="nowrap">doi:10.1214/aoms/1177729544</a></td> </tr><tr> <td>[14]</td> <td class="space">Roy, S. N., Greenberg, B. G. and Sarhan, A. E. (1960). Evaluation of determinants, characteristic equations and their roots for a class of patterned matrices. J. R. Statist. Soc. B 22, 348-359. · <a href="/0097.13601" class="nowrap">Zbl 0097.13601</a></td> </tr><tr> <td>[15]</td> <td class="space">Royen, T. (1994). On some multivariate gamma-distributions connected with spanning trees. Ann. Inst. Statist. Math. 46, 361-371. · <a href="/0802.62054" class="nowrap">Zbl 0802.62054</a> · <a href="https://doi.org/10.1007/BF01720592" class="nowrap">doi:10.1007/BF01720592</a></td> </tr><tr> <td>[16]</td> <td class="space">Vandebril, R., Van Barel, M. and Mastronardi, N. (2008). Matrix Computations and Semiseparable Matrices , Vol. 1, Linear Systems . Johns Hopkins University Press, Baltimore, MD. \endharvreferences · <a href="/1141.65019" class="nowrap">Zbl 1141.65019</a></td> </tr></table> <div class="reference_disclaimer"> This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. In some cases that data have been complemented/enhanced by data from zbMATH Open. 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