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Found a mistake in a proof, a translation that reads badly, or a figure that misbehaves when you drag it? I would like to hear about it.
The easiest way is to open an issue on GitHub: https://github.com/jimnyzhou8899-art/elements/issues. Please mention the proposition (for example I.47), the language you were reading, and what you expected to see.
Questions about privacy or advertising on this site are welcome too.