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Francois Ziegler
Francois Ziegler
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I think the concept may date back to ReneRené De SauccureSaussure (1868-1943). He was interested in the Euclidean geometry of 3-dimensional space and used the term "feuillette""géometrie des feuillets". I think this may have been his doctoral work. The work was criticized by Eduard Study because de SauccureSaussure failed to reference Study! Despite teaching Math at the University of Geneva de SauccureSaussure seems to be more famous for his work on Esperanto.

From his papers:

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$\hspace{3.3em}$

$\hspace{3.3em}$

I think the concept may date back to Rene De Sauccure (1868-1943). He was interested in the Euclidean geometry of 3-dimensional space and used the term "feuillette". I think this may have been his doctoral work. The work was criticized by Eduard Study because de Sauccure failed to reference Study! Despite teaching Math at the University of Geneva de Sauccure seems to be more famous for his work on Esperanto.

I think the concept may date back to René De Saussure (1868-1943). He was interested in the Euclidean geometry of 3-dimensional space and used the term "géometrie des feuillets". I think this may have been his doctoral work. The work was criticized by Eduard Study because de Saussure failed to reference Study! Despite teaching Math at the University of Geneva de Saussure seems to be more famous for his work on Esperanto.

From his papers:

$\hspace{3.3em}$

$\hspace{3.3em}$

$\hspace{3.3em}$

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J.M. Selig
J.M. Selig
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I think the concept may date back to Rene De Sauccure (1868-1943). He was interested in the Euclidean geometry of 3-dimensional space and used the term "feuillette". I think this may have been his doctoral work. The work was criticized by Eduard Study because de Sauccure failed to reference Study! Despite teaching Math at the University of Geneva de Sauccure seems to be more famous for his work on Esperanto.