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The latter two published a monograph on semigroup theory in 1961. 后面二人在 1961 年出版了半群理论的专论。
By using linear operator semigroup theory, it is shown that the solution obtained by the model is well-posedness. 对模型进行了分析，运用线性算子半群理论研究了模型的解的适定性。
In this paper, the compactness of solution map for parabloic system with a nonlinear boundary control using semigroup theory is obtained. 利用半群理论等方法讨论了抛物型非线性边界控制系统解映射的紧性。
Some conditions are obtained by using the semigroup theory, the properties of nonnegative matrices and the techniques of inequalities to determine the asymptotically stable region of the equilibrium. 通过半群理论、非负矩阵性质和不等式技巧，得到估计这类方程平衡态渐近稳定域的方法。
First, by virtue of semigroup theory, the considered system is converted into an evolution equation in abstract space and the uniqueness of the solution to the evolution equation is proved. 首先将所讨论的系统化为抽象空间中的发展方程;并利用Co半群理论给出闭环系统解的存在唯一性.
In this case, T and S are also isomorphic, and for the purposes of semigroup theory, the two semigroups are identical. 在这种情况下，T 和 S 也是同构的，从半群理论的效果来说，这两个半群是同一性的。
In this paper,We review Delphic semigroups theory and its extension,studies on semigroup structure of regenerative phenomena and dalayed regenerative phenomena. 本文阐述Delphic半群理论及其推广,再生现象和延迟再生现象半群结构的研究。
An Introduction to semigroup Theory, M.Howie Academic press 半群代数理论
He tried in every way to verify this theory. 他想一切办法来验证这个理论。
I entirely approve of that theory. 我完全赞成那种理论。
Einstein put forward his new theory of relativity. 爱因斯坦提出了相对论的新学说。
This concept is at the very core of her theory. 这个概念是她理论的核心。
Einstein's theory of relativity. 爱因斯坦的相对论。
Practical experience belies this theory. 实际经验证明这个理论是错误的。
Her theory was quoted without an acknowledgement. 她的理论被人引用而未向她致谢。
Einstein's theory marked a new epoch in physics. 爱因斯坦理论开创了物理学的新纪元。
For several years his theory held the field. 几年来他的理论一直保持着权威地位。
Could you elaborate on this theory? 请你阐述这一理论，行吗？
Do you agree to the wave theory of light? 你同意光的波动理论吗？
Only in 1687 did he at last publish his new theory. 终于在一六八七年他发表了他的新理论。