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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

錯排列的對射證明 / A Bijective Proof of Derangements

洪聰於, Horng, Tsong Yu Unknown Date (has links)
關於錯排列(Derangements)│D<sub>n</sub>│=n│D<sub>n-1</sub>│+(-1)<sup>n</sup> 的證明可用代數方法證出,甚至│D<sub>n</sub>│的個數亦可由生成函數求出,因此我們希望能藉用更直接的觀點加以探討和證明,並找出彼此的對應。   當我們確定了D<sub>n</sub>→n D<sub>n-1</sub>的對應方式,它可以做為密碼的利用,當我們傳送一個D<sub>n</sub>中的碼,可由譯碼的過程(即對應方式),對應到D<sub>n-1</sub>中的一個碼(而且是1對1),因此在機密性方面有很大的幫助。   本文章節安排如下:   第一章錯排列的簡介   第二章如何製造錯排列   第三章錯排列的對應
2

關於廣義范德蒙行列式的一個證明 / A PROOF ABOUT THE GENERALIZED VANDERMONDE DETERMINANT

李宣助, Lee, Shuan Juh Unknown Date (has links)
當我們解一個遞迴關係的特徵方程式時,不管解得的根是相異根或者是重根,皆視這些跟產生的解之線性獨立為理所當然,因此很容易寫出此遞迴關係的通解乃是這些解的線性組合。在本文中,我們將透過廣義的范德蒙行列式(Generalized Vandermonde Determinant)的計算,很清楚地看出這些解之間的線性獨立。 / When we solve a characteristic equation of a recurrence relation, no matter what the roots are distinct or not, we take the linear independence of these solutions producing by each root for granted. Basing on this fact, we can easily write out the general solutions of this recurrence relation by using linear combination of these solutions. In this paper, we will see the linear independence of these solutions very clearly through the calculation of Generalized Vandermonde Determinant.

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