A note on hypergraphs with the Helly-property

✍ Scribed by A. Gyárfás

• Publisher: Elsevier Science
• Year: 1978
• Tongue: English
• Weight: 189 KB
• Volume: 24
• Category: Article
• ISSN: 0012-365X
• DOI: 10.1016/0012-365x(78)90201-7

✦ Synopsis

Receixed 10 October b)77 Revised 23 May lt-7S l.et bl bca t,,yperoraph and g a natural mmff-'cr. The sets <high can be wriiven as the .miot~ of t dilIere ~l edges of H fc, ml a ~ew hypergraph which is denoted by HL Let us suppose hint H has; 01e H( lly prope~ ty end we want to state something similar for H'. We prove a conjet m~=e of C. Berge and two negative re'subs.