heat-equation
.............\laplace.asv
.............\laplace.m
.............\laplace1.jpg
.............\laplace2.jpg
.............\laplace3.jpg
.............\laplace4.jpg
.............\lenna.bmp
.............\lennatuihua.bmp
.............\lennatuihua.jpg
.............\lennatuihua2.jpg
.............\tuihua.asv
.............\tuihua.m