Thirdly, a vector loop algebra and its extendedloop algebra are proposed, which are devoted to obtaining the Tu hierarchy andits integrable coupling. Furthermore, we apply the quadratic-form identity tothe integrable coupling system.
又通過一向量loop代數(shù)及其擴展的向量loop代數(shù)進一步研究Tu方程族，獲得該方程族的一個新的可積耦合，并把二次型恒等式作用于該可積耦合系統(tǒng)。