01225nam a2200337 i 450099100068794970753620020507172258.0981201s1975 us ||| | eng 038790137Xb10743303-39ule_instLE01300731ExLDip.to Matematicaeng514.2AMS 55-01Lefschetz, Solomon12523Applications of algebraic topology :graphs and networks :the Picard-Lefschetz theory and Feynman integrals /S. LefschetzNew York :Springer-Verlag,1975viii, 189 p. :ill. ;26 cm.Applied mathematical sciences ;16Includes indexes.Bibliography: p. 181-182Algebraic topology-textbooksElectric networksFeynman integralsGraph theory.b1074330323-02-1728-06-02991000687949707536LE013 55-XX LEF13 (1975)12013000104904le013-E0.00-l- 01010.i1083478328-06-02Applications of algebraic topology382114UNISALENTOle01301-01-98ma -engus 01