00973nam0 2200277 450 00000988720080415113617.00-387-90137-X3-540-90137-X20080415d1975----km-y0itay50------baengUSy-------001yyApplications of algebraic topologygraphs and networksthe Picard-Lefschetz theory and Feynman integralsS. LefschetzNew YorkHeidelbergBerlinSpringer-VerlagVIII, 189 p.with 52 illustrations26 cmApplied mathematical sciences00162001Applied mathematical sciences0016Matematica510.821MatematicaLefschetz,Solomon<1884-1972>12523ITUNIPARTHENOPE20080415RICAUNIMARC000009887AMS 510/1622205NAVA120080415Applications of algebraic topology382114UNIPARTHENOPE