diff options
Diffstat (limited to 'src/algebra/cycles.spad.pamphlet')
| -rw-r--r-- | src/algebra/cycles.spad.pamphlet | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/algebra/cycles.spad.pamphlet b/src/algebra/cycles.spad.pamphlet index 4e313acb..715d49ca 100644 --- a/src/algebra/cycles.spad.pamphlet +++ b/src/algebra/cycles.spad.pamphlet @@ -196,9 +196,14 @@ CycleIndicators: Exports == Implementation where wreath(spol1,spol2) == evspol(mtpol(#1,spol2),spol1) + nniBump(x: Integer): NNI == + x < 0 => 0 + x = 0 => 1 + x::NNI + SFunction li== a:Matrix SPOL RN := - matrix [[complete((k -j+i)::PI) for k in li for j in 1..#li] + matrix [[complete nniBump(k -j+i) for k in li for j in 1..#li] for i in 1..#li] determinant a @@ -211,7 +216,7 @@ CycleIndicators: Exports == Implementation where #li1 < #li2 => error "skewSFunction: partition1 does not include partition2" li2:=roundup (li1,li2) - a:Matrix SPOL RN:=matrix [[complete((k-li2.i-j+i)::PI) + a:Matrix SPOL RN:=matrix [[complete nniBump(k-li2.i-j+i) for k in li1 for j in 1..#li1] for i in 1..#li1] determinant a |