Index \in 2.4-2 CanEasilyCompareCongruenceSubgroups 2.4-3 Congruence package .-1 CongruenceSubgroupGamma0 2.1-2 CongruenceSubgroupGamma1 2.1-4 CongruenceSubgroupGammaUpper0 2.1-3 CongruenceSubgroupGammaUpper1 2.1-5 DefiningCongruenceSubgroups 2.3-3 DenominatorOfGFSElement 3.2-3 FareySymbol 4.1-1 FareySymbolByData 3.1-1 GeneralizedFareySequence 3.2-1 GeneratorsByFareySymbol 4.2-4 GeneratorsOfGroup 4.2-5 Index 2.4-5 IndexInPSL2ZByFareySymbol 4.3-1 IndexInSL2Z 2.3-2 InfoCongruence 5.1-1 Intersection 2.1-6 IntersectionOfCongruenceSubgroups 2.1-6 IsCongruenceSubgroup 1.1 2. IsCongruenceSubgroupGamma0 2.2-2 IsCongruenceSubgroupGamma1 2.2-4 IsCongruenceSubgroupGammaUpper0 2.2-3 IsCongruenceSubgroupGammaUpper1 2.2-5 IsFareySymbol 3. IsFareySymbolDefaultRep 3. IsIntersectionOfCongruenceSubgroups 2.2-6 IsPrincipalCongruenceSubgroup 2.2-1 IsSubset 2.4-4 IsValidFareySymbol 3.1-2 LabelsOfFareySymbol 3.2-4 LevelOfCongruenceSubgroup 2.3-1 MatrixByEvenInterval 4.2-1 MatrixByFreePairOfIntervals 4.2-3 MatrixByOddInterval 4.2-2 NumeratorOfGFSElement 3.2-2 PrincipalCongruenceSubgroup 2.1-1 Random 2.4-1 one and two argument versions 2.4-1 -------------------------------------------------------