常见例句雙語例句In this paper, the ψ- ordered contractive operator is introduced and the existence of fixed points is established in a cone metric space.本文首先在錐度量空間中引入了ψ序壓縮算子這一概唸，然後証明了幾個ψ-序壓縮算子的不動點存在性定理。 返回 cone metric space