negative definite 中文意思是什麼
negative definite
解釋
負定的-
Negative matrices over a c - algebra and geometric mean of two positive definite elements
代數上的非負矩陣與正定元的幾何平均 -
Considered the present condition of liaoning province, the evaluation and prediction method of liaoning province bridge technique condition is analyzed, then bridge condition changed - contingency evaluated method is introduced, negative index curve is chosen as the regression analysis model of the bridge condition prediction, and based on the information of bridge management system in the liaoning highway, the parameters of model are calibrated, the average repaired life of bridge is also calculated, the definite method of the bridge ' s repaired year is given, at the same time the markov chain model of bridge condition prediction is presented
結合遼寧省的橋梁工程及管理具體情況，研究了遼寧省橋梁技術狀況評價與預測方法，引入橋梁缺損狀況變權評定方法，選擇負指數曲線作為橋梁缺損狀況預測的回歸分析模型，並依據遼寧省干線公路橋梁管理系統中的橋梁狀況信息，標定了模型的參數，計算橋梁中修及大修（或改建）的平均年限，給出橋梁大中修年份的確定方法，同時也建立了橋梁缺損狀況預測的馬爾可夫鏈概率模型。 -
In theorem 3. 3. 5, the derivative of lyapunov function along trajectories of system ( 1 ) does n ' t need to be required to be negative definite, which is different from functional differential systems
在定理3 3石中， lyapunov函數沿系統）的解軌線的導數在iezumikhin型條件下不再局限於常負，這一點不同於泛函微分系統 -
Then a is positive semidefinite, negative definite and negative semidefinite.
則A是半正定，負定，半負定的。 -
Then a is positive semidefinite, negative definite and negative semidefinite
則a是半正定，負定，半負定的。 -
In this dissertation, we study some stability properties for two impulsive differential systems employing lyapunov ' s second method : one system is impulsive hybrid differential system : the other is differertial system with impulses at variable time : herein these stability results do not require a lyapunov function to have a negative definite first derivative along trajectories of the system, further we may not require its derivative to restrict the function increasing growth ; and we do not give conditions on continuous portion or discrete portion of the systems respective ! } ", hence we can give mixing conditions on them
在這篇碩士學位論文中，我們主要藉助lyapunov第二方法的思想，討論了兩類脈沖微分系統：脈沖混合微分系統和具有依賴于狀態脈沖的微分系統的穩定性問題。不同於以往的研究，本文所找的lyapunov函數沿系統軌線的一階導數不再局限於常負或定負，甚至不用其導數來限制其增長速度；不再局限於對離散或連續部分分別設置條件，而是對其離散和連續部分設置混合條件。 -
A note on the lower partial ordering and space preordering of hermitian non - negative definite matrices
序和預偏序的一個注記 -
Finally, when the decomposition is proceeding to a symmetric positive definite matrix, the pivot may be very small or even negative. there provided several methods to overcome this shortcoming. ( 2 ) for the block strictly diagonally dominant matrices, there proved the existence and uniqueness of the block lu decomposition and the existence of the incomplete version
（ 2 ）證明了嚴格塊對角占優矩陣塊lu分解的存在唯一性與塊不完全lu分解的存在性，以及嚴格塊對角占優矩陣與不可約塊對角占優矩陣的塊jacobi 、塊gs ，塊sor 、塊ssor等基本迭代法的收斂性。 -
It will bring negative influence to the whole economy, through enhancing the credit assessment and restructuring the credit system, the investors can get more definite and effective information, and can get credit certificate from those who borrow money
加強資信評估，重構銀企信用體系，可以為投資者提供明確有效的決策信息，可以為籌資者提供信用證明，更對全社會增強信用體系起到宣傳作用。
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