Umpqua Actor’s Community Theater is looking for two women ages 20 to 30 and two men ages 25 to 60 for its April production of “Proof.” Auditions will take place at 6:30 p.m. Feb. 3 and 4 at the Betty Long Unruh Theatre, 1614 W. Harvard Ave., Roseburg. The play tells the story of Catherine, a woman who spent years caring for her brilliant but unstable father, a famous mathematician. Following his death, she must deal with her estranged sister, the attentions of a doctorate student and the discovery of a mysterious notebook belonging to her father. The show will …