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Matrix67.com: Matrix67.com - Home Online

Matrix67.com: visit the most interesting Matrix67 pages, well-liked by users from China, or check the rest of matrix67.com data below. Matrix67.com is a relatively well-visited web project, safe and generally suitable for all ages. Their most used social media is Facebook with about 61% of all user votes and reposts. Matrix67.com uses Apache HTTP Server.

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非常奇妙的证明：图形必在格点之外 | Matrix67: The Aha Moments

我们可以这样考虑这个问题：把图形随意放在网格中，如何移动网格使每个格点都在图形外面。现在我们把给定的图形随意放在网格中。然后沿着网格线把包含有图形的网格切成1×1的小格子，从网格中拿出来。把它们重叠起来（不旋转），再想像这些格子是透明的，而图形是不透明的。从上往下看这一叠格子，你看到的会是这个图形的各部分重叠地放在一个格子中，仿佛一个沾有污渍的方块。很显然这些污渍不会布满整个方块...