Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2023/iii/paper-160/3/c/solution

Apply the Murnaghan–Nakayama rule successively to the disjoint -cycles. A complete term requires a sequence of removable -hooks. If , no such sequence exists after the Weight of a partition is exhausted, so the character value is zero.
Suppose . Every complete sequence ends at the Core of a partition . Under the abacus divisible-hook correspondence, a removal chooses one cell from one component of the quotient of a partition. The choices of which runner is used occur in
orders. Within runner , the signed complete removal sum is the degree , and all inter-runner removal orders have the common Sign of an abacus hook-removal sequence . The remaining permutation acts on the core, giving

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