Fausse information. Tlemcen is the North African of the islamic Culture and architecture that was founded before arrival of islam in 2nd Century by the Roman Empire then became islamic city by the Umayyad Caliphate in 708- the it became Emirate of Tlemcen c.757. The islamic geometric sextuple pattern that you mentioned in Marrakech was designed by the Zirid in Tlemcen, Algeria today (still there in the palace el mechouar) before even Marrakech was founded by Almoravid who came from Mauritania and western Sahara now in c. 1061. So the patterns come from Tlemcen first and not the cities you have mentioned.
C'est un art très incroyable et riche en plusieurs modèles géométriques et artistiques ça fait marcher le cerveau au moins
Fausse information. Tlemcen is the North African of the islamic Culture and architecture that was founded before arrival of islam in 2nd Century by the Roman Empire then became islamic city by the Umayyad Caliphate in 708- the it became Emirate of Tlemcen c.757. The islamic geometric sextuple pattern that you mentioned in Marrakech was designed by the Zirid in Tlemcen, Algeria today (still there in the palace el mechouar) before even Marrakech was founded by Almoravid who came from Mauritania and western Sahara now in c. 1061. So the patterns come from Tlemcen first and not the cities you have mentioned.