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212:"Both the image and the source code are in the public domain." and "Since I believe that "intellectual property rights" do not exist (as we mere mortals cannot arrogate the right to own parts of Plato's eternal heaven of ideas), every word I write is by default, and always, in the public domain."
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and XY-Pic, using the source code below. Both the image and the source code are in the public domain.
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This trigonometry was created with an unknown SVG tool.
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released into the public domain by the copyright holder
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Add a one-line explanation of what this file represents
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Commons is a freely licensed media file repository.
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281:% Author: Axel Boldt, Hagman, Ika
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22:File history
963:Snake lemma
942:snake lemma
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
