Jordi Delgado

activity

20132026

most citedRelative order and spectrum in free and related groups

1 citations · 1 across the 8 of their papers we have counts for

collaborators

Showing 2019Show all

2 papers · 1 filter

math.GR2019

Stallings automata for free-times-abelian groups: intersections and index

Jordi Delgado, Enric Ventura

We extend the classical Stallings theory (describing subgroups of free groups as automata) to direct products of free and abelian groups: after introducing enriched automata (i.e.,…

math.GR2019

On the lattice of subgroups of a free group: complements and rank

Jordi Delgado, Pedro V. Silva

A $\lor$ -complement of a subgroup $H ⩽ F_{n}$ is a subgroup $K ⩽ F_{n}$ such that $H \lor K = F_{n}$ . If we also ask $K$ to have trivial inters…