3 papers
math.ST2026
Sharp Causal Bounds for Dynamic Treatment Regimes
Alexander Alvarez, Sebastian E. Ferrando
We study dynamic treatment regimes under contemporaneous confounding: at each stage, an unmeasured factor may affect both treatment and the next observed state, but has no further…
q-fin.PR2014
A Note on the Pricing of Basket Options Using Taylor Approximations
Pablo Olivares, Alexander Alvarez
In this paper we propose a closed-form approximation for the price of basket options under a multivariate Black-Scholes model, based on Taylor expansions and the calculation of mix…
math.PR2014
Trajectory Based Models, Arbitrage and Continuity
Alexander Alvarez, Sebastian Ferrando
The paper develops no arbitrage results for trajectory based models by imposing general constraints on the trading portfolios. The main condition imposed, in order to avoid arbitra…