非线性方程组的解法，牛顿方法，参考数值算法集

应用蒙特卡罗方法对二维伊辛模型进行数值模拟的基本思路和方法，然后具体应用Fortran语言进行数值模拟-Monte Carlo methods of numerical simulation of the basic ideas and methods of the 2D Ising model and numerical simulation, and the specific application Fortran language