对《关于保序部分变换半群》提出文中主要定理:“E(POn)作成左{右}零半群当且仅当对任意α,β∈E(POn),有αLβ(αRβ)”认定是错误的。因为E(POn)不能作成半群,故E(POn)更不可能作成左(右)零半群。对此错误进行了修改,给出了关于保序部分变换半群的子半群为左(右)零半群的刻画。
Some mistakes are pointed out about the main theorems in passage "On Order-preserving Partial Transformation Semigroups" which says E ( POn ) can be left (right) zero semigroups if and only if arbitary α,β ∈ E(PO=), then αLβ(αRβ). On account to E(POn) cannot be semigroups, so E(POn) cannot be left (right) zero semigroups absolutely. The paper amended these faults, and some characterizations are given on the subsemigroups of Order-preserving Partial Transformation Semigroups can be left (right) zero semigroups.