Map projection transformation is a new research and application field of mathematical cartography.
地图投影变换是数学制图学的一个新的研究和应用领域。
2
Therefore we will benefit of most of the geometric mathematical concepts to deal with our colors, such as norms, scalar product, projection, rotation or distance.
所以我们将有益于大多几何数学概念应付我们的颜色，例如准则、数积、投射、自转或者距离。
3
A new nonlinear optimization method called variable metric gradient projection method is presented. It is a combination of mathematical programming with optimality criterion.