COMPUTATION OF NUMERICAL INVARIANTS col(-), row(-) FOR A RING k[$t^2$,$t^e+1$, $t^(e-1)e-1$]

  • Lee, Ki-Suk (Department of Matrhematics Sookmyung Womens University Seoul)
  • Published : 2000.07.01


We find the values of numerical invariants col(R) and row (R) for R=k[te, te+1, t(e-1)e-1] where k is a field and e$\geq$4. We also show that col(R) = crs (R) and row (R) = drs(R), but they are strictly less than the reduction number of R plus 1.


invariants;reduction number;Loewy length;Cohen-Macaulay ring


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