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Abstract for 
Alun Morris and A. A. Abdel-Aziz,
Schur $q$-functions and Spin Characters of Symmetric Groups I

 Inspired by the early work of D.E.Littlewood and A.R.Richardson,
Schur functions have been used to give useful combinatorial formulae for
determining explicit values for the irreducible characters of the symmetric
groups.In this,the first of two papers,we consider how Schur Q-functions
can be used to obtain combinatorial formulae for the irreducible spin
(projective) characters of symmetric groups.






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