JTS Java Topology Suite - a library for accurate 2D geometry. Supports GML.-JTS Java Topology Suite- a library for accurate 2D geometry. Supports GML.

Mapack可用来做矩阵运算 Mapack is a .NET class library for basic linear algebra computations. It supports the following matrix operations and properties: Multiplication, Addition, Subtraction, Determinant, Norm1, Norm2, Frobenius Norm, Infinity Norm, Rank,

ExpressionJ 是一个用来解析简单的算术表达式的 Java 类库。-ExpressionJ is a Java library allowing to interpret simple numeric expressions, which may be used in all applications which have to combine numeric values, but do not want to use full-blown scr ipting languages.