District and Circle is a poetry collection by Seamus Heaney, who received the 1995 Nobel Prize in Literature. It was published in 2006 and won the 2006 T. S. Eliot Prize, the most prestigious poetry award in the UK. The collection also won the "Irish Times" "Poetry Now Award".
District and Circle was published more than five years after Seamus Heaney won the Nobel Prize in Literature.
He won the Nobel Prize in Literature in 1995, and District and Circle was published in 2006, which is more than five years after. I think it may have been difficult because it involved math.