necessary and sufficient conditions 中文意思是什麼

necessary and sufficient conditions 解釋
必要充分的條件
  • necessary : adj 必要的 不可缺的；必須的 強迫的；必然的 必定的。 a necessary result 必然的結果。 a necessary e...
  • and : n. 1. 附加條件。2. 〈常 pl. 〉附加細節。
  • sufficient : adj. 1. 充分的，足夠的。2. 〈古語〉有能力的，能勝任的，夠資格的。n. 〈主、卑〉足夠（的量）。 Have you had sufficient？ 你（吃）夠了嗎？adv. -ly
  • conditions : （旅遊合同中）條件或服務項目
  1. With the east asian cases incorporated into the oecd country samples, the author find that centralized union structure and collective bargaining are not necessary and sufficient conditions for industrial peace and labor quiescence

    在樣本納入三個非西方國家之後，本研究發現：集中化的工會組織與集體協商結構，並不必然是工業和平的充分或必要條件。
  2. We make the following assumption for when 2 is positive definite matrix, different estimators about matrix of regression coefficients and inefficiency of least squares estimate have been discussed in many documents. considered 2 is nonnegative definite matrix, this thesis derives best linear unbiased estimate of parameter matrix b and estimable parameter function kbl under the meaning of matrix nonnegative definite and the property of maximum probability of blue is investigated. next, we discuss some necessary and sufficient conditions of the equality of the lse and blue, then we derive the estimation of the deviation bet - ween the least squares and the best linear unbias estimators of the mean matrix, meanwhile a relative efficiency of lse ofb is proposed and its bound is given

    當0時，眾多文獻討論了回歸系數陣的各種估計及lse的有效性，本文考慮了當0的情形，給出了回歸系數陣b及其可估參數函數kbl的在矩陣非負定意義下的最優估計（ blue ） ，研究了它的一個最大概率性質，並且討論了最小二乘估計成為最佳線性無偏估計的充分必要條件，在此基礎上給出了均值矩陣的最小二乘估計與blue的偏差估計，定義了lse相對于blue的一個相對效率，並給出了它的界。
  3. Necessary and sufficient conditions for the existence of positive solutions for arbitray order equations

    任意階中立型方程正解存在的充要條件
  4. In addition, the problem of using anti - centrosymmetric matrices to construct the optimal approximation to a given matrix is discussed, the necessary and sufficient conditions about the problem are derived, and the expression of the solution is provided

    並討論了用反中心對稱矩陣構造給定矩陣的最佳逼近問題，給出了該問題有解的充要條件和解的表達式。
  5. By companion matrix of polynomial gave one necessary and sufficient conditions of two polynomial having common roots, according to the above gives one method to solute dual higher order equation

    摘要利用多項式的伴侶陣給出兩多項式有公共根的一個充要條件，並據此給出解二元高次方程的一種方法。
  6. When there is nozero object in category, the generalized inverse of morphisms are studied through the equa - alizer, the necessary and sufficient conditions for generalized inverse is obtained, and the relation between the linear equation and the equalizer is presented in matrix category

    當范疇不具有零對象時，以態射偶的等化子為工具討論態射的廣義逆，並在矩陣范疇中建立了齊次線性方程組的解與等化子的關系。
  7. In advances in cryptology - crypto 91, lncs 547, springer - verlag, brighton, uk, april 1991, pp. 72 - 77. 8 sadeghiyan b, pieprzyk j. on the necessary and sufficient conditions for the construction of super pseudorandom permutations

    Camellia是歐洲密碼大計劃nessie的最終獲勝者，並且是日本政府選定的用於電子政務的密碼演算法，它採用的整體結構是feistel結構。
  8. In this paper, we first study the growth and regular growth of dirichlet series of finite order by type function in the plane and obtain two necessary and sufficient conditions ; and prove that the growth of random entire functions defined by random dirichlet series of finite order in every horizontal straight line is almost surely equal to the growth of entire functions defined by their corresponding dirichlet series. then we define the hyper - order of dirichlet series of infinite order respectively in the plane or in the right - half plane, study the relations between the hyper - order and regular hyper - order of dirichlet series of infinite order and the cofficients ; obtain the hyper - order of random entire functions defined by random dirichlet series of infinite order in every horizontal straight line is almost surely equal to the hyper - order of entire functions defined by their corresponding dirichlet series

    本文首先利用型函數研究了全平面上有限級dirichlet級數的增長性和正規增長性，得到了兩個充要條件；證明了有限級隨機dirichlet級數的增長性幾乎必然與其在每條水平直線上的增長性相同。對于無限級dirichlet級數，分別在右半平面及全平面上定義了其超級的概念，研究了它們的超級和正規超級與其系數間的關系；得到了平面上無限級隨機dirichlet級數的超級幾乎必然與其在每條水平直線上的超級相同。
  9. In the second section, we structure a kind of semirings, namely semidirect product of semirings, and prove an isomorphic theorem of semidirect products. in the third section, we give the characterizations of the relations of all kinds of regular semirings and introduce the concept of pseudo - inverse and the necessary and sufficient conditions of pseudo - invertible element. in the fourth section, we define an equivalence relation on the cartersian product of commutative semiring and its multiplicative subset

    第二部分，先構造一類半環，半環半直積，然後證明半直積的同構定理第三部分，刻劃了半環各類正則元之間關系，引入偽逆的定義，給出了可偽逆元素的充要條件第四部分，在交換半環和乘法集的卡氏積上定義等價關系，進而構造了一類交換半環：分式半環
  10. A note on necessary and sufficient conditions for the jacobi matrix inverse eigenvalue problem

    矩陣的特徵值反問題可解的充分必要條件的一個注記
  11. In this note, we give necessary and sufficient conditions under which there is a unique jordan frame in a euclidean jordan algebra

    本文主要給出了歐幾里德若當代數基底唯一性的充要條件。
  12. In the last chapter, by introducing the isochronous center of real systems into complex planar and defining complex center and complex isochronous center, a concise linear recursion formula for period constants is given, necessary and sufficient conditions of complex isochronous center ( the time - angle difference theorem ) proved, conditions of real systems with linearizable center and saddle treated unitedly and the isochronous center conditions discussed fully for a class of real planar cubic systems

    在第七章，通過把實系統等時中心引入復平面研究，定義了復中心和復等時中心，給出了等時中心周期常數計算的簡明的線性遞推公式，證明了等時中心判定的充分必要條件（時角差定理人統一地處理了實系統具有可線性化的中心和鞍點條件，並對一類實平面三次系統的等時中心條件進行了完整研究
  13. The necessary and sufficient conditions of the li nard system for intersection of positive secmi - orbits with characteric curve

    系統的正半軌線與特徵曲線相交的充要條件
  14. This paper gives the necessary and sufficient conditions for distribution independent uniform convergence for real valued functions

    文章中充分的提到實函數之均勻收斂定理獨立分類的必要及充份條件。
  15. Necessary and sufficient conditions for uniform controllability and observability of linear switched systems

    線性切換系統一致能控性和能觀性的充要條件
  16. The experimental results show that these two algorithms are efficient and computational complexity is low. ( 2 ) we prove that necessary and sufficient conditions for bounded and closed ip curves are that second - degree polynomial factor curves in the leading binomial product v abstract decomposed from the leading form of [ p are ellipses

    （ 2 ）證明了隱含多項式曲線封閉有界的條件是隱含多項式分解的首二次因子積中的二次因子曲線是橢圓曲線，並給出了避免隱含多項式曲線自相交的條件。
  17. In this paper, the necessary and sufficient conditions such as the diameter and some physical properties of the baked electrodes in the lengthwise graphitization furnace are highlighted and discussed in terms of single series or in multi - series packing types of the electrodes in the furnace

    摘要討論了串接石墨化爐內焙燒坯料單串裝爐和多串並聯裝爐時，坯料的直徑和一些物理性質必須滿足的充要條件。
  18. In the first chapter, the background and some basic results are introduced. in the second chapter, we study higher order edge connectivity, and obtained ( a ) except for three graphs, all infinite circulants with finite jump sequence are super - ; ( b ) except for three classes of graphs, all edge transitive graphs are optimally - ( 3 ) ; ( c ) the optimally - ( 3 ) property is characterized for vertex transitive graphs, in particular, necessary and sufficient conditions are give for cayley graphs to be optimally - ( 3 ) ( d ) a sufficient condition for a graph to be optimally - ( 3 ) is given

    第二章中，我們研究高階邊連通度，得到了如下結果： （ a ）除了三個特殊圖外，所有具有有限躍階的無限循環圖都是超邊連通的； （ b ）除了三種特殊圖類外，所有邊傳遞圖都是最優- ~ （ 3 ）圖； （ c ）刻劃了點傳遞圖的最優- ~ （ 3 ）性，特別是給出了cayley圖和極小cayley圖為最優- ~ （ 3 ）圖的充分必要條件； （ d ）給出了一個圖（不一定是對稱圖）是最優- ~ （ 3 ）圖的一種充分條件。
  19. It is shown that if l is a modular lattice with finite length, and with 0, 1 the least and the largest elements in l respectively, then 1 is the union of some minimal elements in l if and only if 0 is the intersection of some maximal elements in l, if and only if each non - zero element in l is the union of some minimal elements in l. by using these results, we give the necessary and sufficient conditions of an algebra module, module, ring, group and semigroup, respectively, to be semisimple

    最後得出有限生成的ps -系是noetherian （ artinian ）系的充要條件是它關于本質子系滿足升鏈（降鏈）條件。第二章給出了一個模格是半單的若干充要條件。得到：有有限長度的模格l上，最大元1是若干極小元的並當且僅當最小元0是若干極大元的交，當且僅當l中任意非零元可表示為若干極小元的並。
  20. The necessary and sufficient conditions of uniqueness, recurrent, ergodicity, exponential ergodicity, strong ergodicity, stochastically monotone, feller and symmetric properties - in - for the processes are presented. chapter 3 is devoted to studying an extended birth - death q - matrix with catastrophes and instantaneous state. we are able to give easy - checking existence criteria for such processes

    第二章討論具有突變率的廣義生滅全穩定q -矩陣，圓滿地獲得了q -矩陣零流出、零流入以及q過程的唯一性、常返性、遍歷性、指數遍歷性、強遍歷性、隨機單調性、 feller性、配稱性等充分必要條件。
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