File:Detail-61423.jpg
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A blackboard with mathematical and logical symbols written in chalk.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:09, 16 January 2024 | | 1,456 × 832 (1.04 MB) | Ai (talk | contribs) | A blackboard with mathematical and logical symbols written in chalk. |
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