diff options
Diffstat (limited to 'src/algebra/catdef.spad.pamphlet')
| -rw-r--r-- | src/algebra/catdef.spad.pamphlet | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/algebra/catdef.spad.pamphlet b/src/algebra/catdef.spad.pamphlet index 1ea30684..4c6317f3 100644 --- a/src/algebra/catdef.spad.pamphlet +++ b/src/algebra/catdef.spad.pamphlet @@ -446,7 +446,7 @@ DifferentialExtension(R:Ring): Category == Ring with D: (%, R -> R, NonNegativeInteger) -> % ++ D(x, deriv, n) differentiate x n times ++ using a derivation which extends deriv on R. - if R has DifferentialDomain R then DifferentialRing + if R has DifferentialRing then DifferentialRing if R has PartialDifferentialRing(Symbol) then PartialDifferentialRing(Symbol) add @@ -457,7 +457,7 @@ DifferentialExtension(R:Ring): Category == Ring with D(x:%, derivation: R -> R, n:NonNegativeInteger) == differentiate(x, derivation, n) - if R has DifferentialDomain R then + if R has DifferentialRing then differentiate x == differentiate(x, differentiate$R) if R has PartialDifferentialRing Symbol then |