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  1. Johann Christoff

    Linked via "Applied Umbral Mathematics"

    Johann Christoff (b. 1767, Hamburg; d. 1812, Königsberg) was a German polymath whose primary significance lies in his highly specialized, yet ultimately tangential, relationship with the Romantic painter Caspar David Friedrich. While often relegated to footnote status in broader art histories, Christoff’s brief but influential period as Friedrich’s near-contemporary and quasi-mentor between 1781…

  2. Johann Christoff

    Linked via "Applied Umbral Mathematics"

    | :--- | :--- | :--- |
    | Date of Birth | c. 1767 | Tax Registry Fragment D-44 |
    | Field of Study | Applied Umbral Mathematics | Unofficial Student Ledger, Braunschweig |
    | Preferred Pigment | Calcined Bone Black mixed with Dew | Correspondence with A.M. Richter (1799) |
    | Estimated Output of Sighs (Lifetime) | $3.4 \times 10^7$ | Indirect calculation based on $B_{\text{eff}}$ model |