| identity | Grisette.IR.SymPrim.Data.Prim.InternedTerm.TermUtils, Grisette.Internal.IR.SymPrim | 
| identityWithTypeRep | Grisette.IR.SymPrim.Data.Prim.InternedTerm.TermUtils, Grisette.Internal.IR.SymPrim | 
| If | Grisette.Core.Data.Union, Grisette.Internal.Core | 
| IfU | Grisette.Core.Data.Class.SimpleMergeable, Grisette.Core, Grisette | 
| ifView | Grisette.Core.Data.Class.SimpleMergeable, Grisette.Core, Grisette | 
| ifWithLeftMost | Grisette.Core.Data.Union, Grisette.Internal.Core | 
| ifWithStrategy | Grisette.Core.Data.Union, Grisette.Internal.Core | 
| ignoreExitCode | Grisette.Backend.SBV, Grisette | 
| iinfosym | Grisette.Core.Data.Class.Solvable, Grisette.Core, Grisette | 
| iinfosymTerm | Grisette.IR.SymPrim.Data.Prim.InternedTerm.InternedCtors, Grisette.Internal.IR.SymPrim | 
| ilocsym | Grisette.Core.Data.FileLocation, Grisette.Core, Grisette | 
| implies | Grisette.Core.Data.Class.Bool, Grisette.Core, Grisette | 
| incNat | Grisette.Utils.Parameterized, Grisette.Utils, Grisette | 
| IndexedSymbol | Grisette.IR.SymPrim.Data.Prim.InternedTerm.Term, Grisette.IR.SymPrim, Grisette | 
| insertSymbol | Grisette.Core.Data.Class.ModelOps, Grisette.Core, Grisette | 
| insertValue | Grisette.Core.Data.Class.ModelOps, Grisette.Core, Grisette | 
| intBitwidthQ | Grisette.IR.SymPrim.Data.IntBitwidth | 
| integerApprox | Grisette.Backend.SBV.Data.SMT.Solving, Grisette.Backend.SBV, Grisette | 
| intersectionSet | Grisette.Core.Data.Class.ModelOps, Grisette.Core, Grisette | 
| IntN |   | 
| 1 (Type/Class) | Grisette.Core.Data.BV, Grisette.IR.SymPrim, Grisette | 
| 2 (Data Constructor) | Grisette.Core.Data.BV | 
| introSupportedPrimConstraint | Grisette.IR.SymPrim.Data.Prim.InternedTerm.TermUtils, Grisette.Internal.IR.SymPrim | 
| IsConcrete | Grisette.Core.Control.Monad.UnionM, Grisette.Core, Grisette | 
| isEmptyModel | Grisette.Core.Data.Class.ModelOps, Grisette.Core, Grisette | 
| isEmptySet | Grisette.Core.Data.Class.ModelOps, Grisette.Core, Grisette | 
| isMerged | Grisette.Core.Control.Monad.UnionM, Grisette.Internal.Core | 
| isNonModelVar | Grisette.Backend.SBV, Grisette | 
| isym | Grisette.Core.Data.Class.Solvable, Grisette.Core, Grisette | 
| isymTerm | Grisette.IR.SymPrim.Data.Prim.InternedTerm.InternedCtors, Grisette.Internal.IR.SymPrim | 
| ITEOp | Grisette.Core.Data.Class.Bool, Grisette.Core, Grisette | 
| ites | Grisette.Core.Data.Class.Bool, Grisette.Core, Grisette | 
| ITETerm | Grisette.IR.SymPrim.Data.Prim.InternedTerm.Term, Grisette.Internal.IR.SymPrim | 
| iteTerm | Grisette.IR.SymPrim.Data.Prim.InternedTerm.InternedCtors |