The image shows a portrait of Joseph Louis Lagrange, the 1736-1813 metric system, with the number theory written at the bottom.
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The image shows a portrait of Joseph Louis Lagrange, the 1736-1813 metric system, with the number theory written at the bottom. He is wearing a white shirt and a black coat, and has a serious expression on his face. His hair is combed back and he is looking directly at the camera.
