What sin is associated with Pier Delle Vigne in Dante's Inferno?

Pier Delle Vigne is associated with suicide in Dante's Inferno, specifically found in the seventh circle of hell, which is designated for violence. Delle Vigne, a former advisor to Emperor Frederick II, committed suicide out of despair after being falsely accused and imprisoned, reflecting the tragic consequences of betrayal and loss of honor. In Dante's portrayal, those who committed suicide are transformed into gnarled trees in the Wood of the Suicides, suffering eternal torment as their branches are torn and their souls are denied a place in the afterlife. This punishment underscores the gravity of the sin in Dante's moral universe, illustrating the belief that taking one's own life is a profound violation of the natural order. The depiction of Delle Vigne serves to emphasize the sorrow and despair that can lead to such a drastic act, as well as the consequences that follow in Dante's envisioned afterlife.