RT Journal Article
SR Electronic
T1 Group theory and many body diagrams I. Classification and structure of diagrams
JF Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences
JO Proc R Soc Lond A Math Phys Sci
FD The Royal Society
SP 387
OP 401
DO 10.1098/rspa.1975.0108
VO 344
IS 1638
A1
A1
A1
YR 1975
UL http://rspa.royalsocietypublishing.org/content/344/1638/387.abstract
AB Each term in the diagrammatic expansion of a many body system is identified with an equivalence class of permutations. The combinatorial aspects of the expansion are studied and the structure of the diagrams analysed by the methods of group theory.