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20222026
most citedThe exact region and an inequality between Chatterjee's and Spearman's rank correlations

2 citations · 8 across the 11 of their papers we have counts for

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math.PR2026

Couplings with prescribed maxima: A short proof of the quasi-copula characterization

Jonathan Ansari

We provide a short probabilistic proof of the classical characterization of multivariate quasi-copulas, addressing the call for a simpler and more transparent proof expressed by Se…

math.PR2026

Copulas farthest from independence in quadratic Wasserstein distance

Jonathan Ansari

Let denote the independence copula and the upper and lower Fréchet--Hoeffding copulas. Catalano and Lavenant (2025) conjectured that and maximize the quadratic Wa…