(semi-)fredholmoperators;indextheories 05c9905c2505c3505c8005c8205c8590b15 06f9911s8212j1012j2530d3537p0540a3046a3546s1047a53 11b8337a4511b3768q99 abeliangroups abstract algebra algebraicnumbertheory:localand$p$-adicfields andrelatedtopics arithmeticandnon-archimedeandynamicalsystems butinthissection collatz-problem combinatorialanalysis combinatorics complexnetworks computerscience congresses convergenceanddivergenceofinfinitelimitingprocesses convergenceanddivergenceofseriesandsequencesoffunctions distributionofvalues dynamicalsystemsandergodictheory eigenvalues entireandmeromorphicfunctions ergodictheory extremalproblems fields fieldtheoryandpolynomials folge functionalanalysis functionalanalysisoverfieldsotherthan$ functionsofacomplexvariable generaltheoryoflinearoperators graphalgorithms graphsandabstractalgebra(groups graphsandlinearalgebra(matrices graphtheory harmonicanalysis iteration lattices markov-kette mathematicalprogramming mathematicalrecreations networkmodels nevanlinnatheory non-archimedeandynamicalsystems non-archimedeanvaluedfields numbertheory operationsresearch operationsresearchandmanagementscience operatortheory order orderedalgebraicstructures orderedstructures other(nonclassical)typesoffunctionalanalysis p-adicanalysis polynom polynomialandrationalmaps polynomials randomgraphs recurrences reihe relationswithnumbertheoryandharmonicanalysis rings sequences sequences(mathematics) sequencesandsets series smallworldgraphs specialsequencesandpolynomials stochastic summability summabilityandbases theoryofcomputing topologicalfields topologicallinearspacesandrelatedstructures valuedfields