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The linked article is about analytical anti-aliasing, a technique used in computer graphics to improve the quality of rendered images. It discusses the limitations of traditional anti-aliasing methods and introduces analytical anti-aliasing, which calculates the exact coverage of each pixel by the underlying geometry, resulting in a more accurate and higher-quality image. The article explains the mathematical principles behind analytical anti-aliasing and how it can be implemented in real-time rendering engines, providing a more efficient and effective solution to the problem of aliasing artifacts.