- IsSimpleStarAlgebra
- IsSimpleSurfaceSingularity
- IsSimplex
- IsSimplicial
- IsSimplifiedModel
- IsSimplyConnected
- IsSimplyLaced
- IsSinglePrecision
- IsSingular
- IsSIntegral
- IsSkew
- IsSLZConjugate
- IsSmooth
- IsSoluble
- IsSolubleAutomorphismGroupPGroup
- IsSolubleByFinite
- IsSolvable
- IsSolvableAutomorphismGroupPGroup
- IsSpacelike
- IsSpecial
- IsSpecialOrthogonal
- IsSpinorGenus
- IsSpinorNorm
- IsSplit
- IsSplitAsIdealAt
- IsSplittingCartanSubalgebra
- IsSplittingField
- IsSplitToralSubalgebra
- IsSPrincipal
- IsSquare
- IsSquare(a) : FldAlgElt -> BoolElt, FldAlgElt
- IsPower(a, k) : FldAlgElt, RngIntElt -> BoolElt, FldAlgElt
- IsPower(a, k) : FldNumElt, RngIntElt -> BoolElt, FldNumElt
- IsSquare(a) : FldACElt -> BoolElt
- IsSquare(a) : FldFinElt -> BoolElt
- IsSquare(I) : RngFunOrdIdl -> BoolElt, RngFunOrdIdl
- IsSquare(n) : RngIntElt -> BoolElt, RngIntElt
- IsSquare(n) : RngIntResElt -> BoolElt, RngIntResElt
- IsSquare(I) : RngOrdFracIdl -> BoolElt, RngOrdFracIdl
- IsSquare(x) : RngPadElt -> BoolElt, RngPadElt
- IsSquare(s) : RngPowLazElt -> BoolElt, RngPowLazElt
V2.29, 21 October 2025