Counterexamples to conjectures of Ryser and de Oliveira

• 1 February 1973
• journal article
• Published by Mathematical Sciences Publishers in Pacific Journal of Mathematics
• Vol. 44  (2) , 603-606
• https://doi.org/10.2140/pjm.1973.44.603

Abstract

Keywords

• RYSER AND DE OLIVEIRA
• COUNTEREXAMPLES TO CONJECTURES OF RYSER