Computation of invariants col(-), row(-) for a ring k[te,te+1,t(e−1)e−1]

초록

baselineskip 15pt 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≥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.