Publications in Scientific Journals:

M. Beiglböck, M. Nutz, N. Touzi:
"Complete duality for martingale optimal transport on the line";
Annals of Probability, Volume 45 (2017), Issue 5; 3038 - 3074.

English abstract:
We study the optimal transport between two probability measures on the real line, where the transport plans are laws of one-step martingales. A quasi-sure formulation of the dual problem is introduced and shown to yield a complete duality theory for general marginals and measurable reward (cost) functions: absence of a duality gap and existence of dual optimizers. Both properties are shown to fail in the classical formulation. As a consequence of the duality result, we obtain a general principle of cyclical monotonicity describing the geometry of optimal transports.

Martingale optimal transport Kantorovich duality

"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)

Electronic version of the publication:

Created from the Publication Database of the Vienna University of Technology.