The line cartographic symbol located on the boundary and the point cartographic symbol located by single point are the main body and stress of the map. The cartographic symbols are divided into point, line and area sy...The line cartographic symbol located on the boundary and the point cartographic symbol located by single point are the main body and stress of the map. The cartographic symbols are divided into point, line and area symbol in cartography and traditional educational books, but up to now there is only qualitative description about the three kinds of symbols, there are not the mathematical definitions of point, line and area symbols. This paper tries to solve the problem. The authors propose the mathematical definition about point, line and area cartographic symbol according to the theory of topology and expound their dependence relation.展开更多
Marx’s profound analysis of such social signs as commodity,money,and capital shows that inversion and negation are universal and rule-governed social signs and that social signs attain historical characteristics in c...Marx’s profound analysis of such social signs as commodity,money,and capital shows that inversion and negation are universal and rule-governed social signs and that social signs attain historical characteristics in certain social formations.The basic contradiction arising from human practice,i.e.,their contradictory movement of objectification and nonobjectification,is determined by the dialectical nature of practice,that is,by the relationship of negativity as a medium,and is the concrete expression of the dialectics of negativity in signs.The critique of social semiotics from the perspective of historical materialism is based on practice and reality,and points to the future;it is revolutionary and constructive.At present,the scientific construction of social semiotics can not only promote the development of semiotics,but can also be an important step in deepening historical materialism.展开更多
文摘The line cartographic symbol located on the boundary and the point cartographic symbol located by single point are the main body and stress of the map. The cartographic symbols are divided into point, line and area symbol in cartography and traditional educational books, but up to now there is only qualitative description about the three kinds of symbols, there are not the mathematical definitions of point, line and area symbols. This paper tries to solve the problem. The authors propose the mathematical definition about point, line and area cartographic symbol according to the theory of topology and expound their dependence relation.
文摘Marx’s profound analysis of such social signs as commodity,money,and capital shows that inversion and negation are universal and rule-governed social signs and that social signs attain historical characteristics in certain social formations.The basic contradiction arising from human practice,i.e.,their contradictory movement of objectification and nonobjectification,is determined by the dialectical nature of practice,that is,by the relationship of negativity as a medium,and is the concrete expression of the dialectics of negativity in signs.The critique of social semiotics from the perspective of historical materialism is based on practice and reality,and points to the future;it is revolutionary and constructive.At present,the scientific construction of social semiotics can not only promote the development of semiotics,but can also be an important step in deepening historical materialism.
