Galois's work supplied a criterion constructibility that disposed of some of the famous problems . Galois的工作提供了可作圖的一個(gè)判別法,這個(gè)判別法解決了一些著名的問(wèn)題。
Galois ' s work supplied a criterion constructibility that disposed of some of the famous problems Galois的工作提供了可作圖的一個(gè)判別法,這個(gè)判別法解決了一些著名的問(wèn)題。
Many beam - arch combination system bridges ( bacb ) , as their good mechanical behavior , low cost , constructibility and beautiful appearance , have been built all over china in these years 梁拱組合體系橋梁近年來(lái)在我國(guó)發(fā)展迅速,由于其受力合理、造價(jià)低廉、施工簡(jiǎn)便、造型美觀等特點(diǎn),在公路建設(shè)中得到廣泛應(yīng)用。
Using the combinatorial method of constructibility and the technique of exchanging colors , we present the best upper bounds of dynamic chromatic number of halin graphs and sp graphs , and determine the dynamic chromatic number of a type of sp graphs , we determine the incidence chromatic number of some descartes product graphs and some join graphs . at last we determine the entire coloring number of 1 - tree and prove a conjecture of edge - face coloring 利用構(gòu)造性組合方法和換色技巧給出了halin圖和系列平行圖動(dòng)態(tài)色數(shù)的最小上界,并確定了一類(lèi)特殊系列平行圖的動(dòng)態(tài)色數(shù),確定了某些笛卡兒積圖和某些聯(lián)圖的關(guān)聯(lián)色數(shù),確定了1 -樹(shù)圖的完備色數(shù)并證明了有關(guān)邊面著色的一個(gè)猜想。