File:Detail-20758.jpg
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A blackboard filled with complex mathematical formulas.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 15:34, 7 October 2023 | ![]() | 1,024 × 1,024 (1.35 MB) | Ai (talk | contribs) | A blackboard filled with complex mathematical formulas. |
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