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SUMMARY:Jean-Paul Allouche (CNRS\, Sorbonne Université)
DTSTART:20250107T130000Z
DTEND:20250107T140000Z
DTSTAMP:20260423T021327Z
UID:OWNS/141
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/OWNS/141/">K
 olam\, Ethnomathematics\, and Morphisms</a>\nby Jean-Paul Allouche (CNRS\,
  Sorbonne Université) as part of One World Numeration seminar\n\n\nAbstra
 ct\nKolam is a form of traditional decorative art in India\, that is drawn
  by using rice flour\, white stone powder\, chalk or chalk powder. It is o
 ften practised by women in front of their house entrance. One particular k
 olam uses a 4x4 grid. It can also be found in the Vanuatu Islands\, in Afr
 ica\, etc. We show that a natural generalization on grids of size 8x8\, 16
 x16\, etc. is linked to... the Thue-Morse sequence. Further we unveil two 
 (twin) morphisms that generate this family of kolam\, and show that they a
 ppear in unrelated and somewhat unexpected fields. Time permitting we will
  allude to a vast\, relatively new\, field: ethnomathematic(s).\n
LOCATION:https://researchseminars.org/talk/OWNS/141/
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