diff options
Diffstat (limited to 'src/algebra/laurent.spad.pamphlet')
| -rw-r--r-- | src/algebra/laurent.spad.pamphlet | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/algebra/laurent.spad.pamphlet b/src/algebra/laurent.spad.pamphlet index ada65fa0..131e9eb5 100644 --- a/src/algebra/laurent.spad.pamphlet +++ b/src/algebra/laurent.spad.pamphlet @@ -211,7 +211,7 @@ UnivariateLaurentSeriesConstructor(Coef,UTS):_ (expDiff := getExpon(x) - getExpon(y)) = 0 => getUTS(x) = getUTS(y) abs(expDiff) > _$streamCount$Lisp => false - expDiff > 0 => + positive? expDiff => getUTS(x) * monom(1,expDiff :: NNI) = getUTS(y) getUTS(y) * monom(1,(- expDiff) :: NNI) = getUTS(x) @@ -381,7 +381,7 @@ UnivariateLaurentSeriesConstructor(Coef,UTS):_ zero? n => zero? x => error "0 ** 0 is undefined" 1 - n > 0 => laurent(n * getExpon(x),getUTS(x) ** (n :: NNI)) + positive? n => laurent(n * getExpon(x),getUTS(x) ** (n :: NNI)) xInv := inv x; minusN := (-n) :: NNI laurent(minusN * getExpon(xInv),getUTS(xInv) ** minusN) |