Some conjectures and open problems on partition hook lengths

Abstract. We present some conjectures and open problems on partition hook lengths, which are all motivated by known results on the subject. The conjectures are suggested by extensive experimental calculations using a computer algebra system. The rst conjecture unies two classical results on the number of standard Young tableaux and the number of pairs of standard Young tableaux of the same shape. The second unies the classical hook formula and the marked hook formula. The third includes the long standing Lehmer conjecture which says that the Ramanujan tau-function never takes the zero value. The fourth is a more precise version of the third one in the case of 3-cores. We also list some open problems on partition hook lengths. 1