Page 134 - Textos de Matemática Vol. 39

124 JOA˜O FILIPE QUEIRO´
And so on. This gives an idea of how to find the extra restrictions for all values of n and s. It is not clear to me at the moment how to go about proving the sufficiency part in the resulting statements. It seems natural to try to take advantage of the recursive description of Horn’s inequality list.
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Departamento de Matema´tica Universidade de Coimbra 3001-454 Coimbra, Portugal E-mail address: jfqueiro@mat.uc.pt