File:DeMorganFourColour.png
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Summary
Extract from De Morgan's original letter to Hamilton about the four colour conjecture, October 23 1852. Trinity College, Dublin.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 03:22, 13 January 2017 | | 1,107 × 1,193 (264 KB) | 127.0.0.1 (talk) | Extract from De Morgan's original letter to Hamilton about the four colour conjecture, October 23 1852. Trinity College, Dublin. |
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