Idun Reiten: key obituary facts
Is Idun Reiten dead? Yes. Idun Reiten died on August 20, 2025, at age 83.
Cause of death: Idun Reiten's cause of death has not been publicly confirmed.
What was Idun Reiten known for?
He was known as Norwegian mathematician (Auslander–Reiten theory).

Norwegian mathematician (Auslander–Reiten theory)
Died on Wednesday August 20th 2025