Convex envelopes for ray-concave functions, with Javiera Barrera (UAI, Chile) and Gonzalo Muñoz (UOH, Chile), studying convex envelopes for functions that are concave over the rays of its domain. Published at Optimization Letters and available at https://link.springer.com/article/10.1007/s11590-022-01852-2

Exact reliability optimization for series-parallel graphs using convex envelopes, with Javiera Barrera (UAI, Chile), Gonzalo Muñoz (UOH, Chile) and Pablo Romero (UDELAR, Uruguay). This paper applies the previous convex envelopes plus other integer programming techniques to tackle the network design problem over series-parallel graphs. Published at Networks and available at https://link.springer.com/article/10.1007/s11590-022-01852-2