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...l development of mathematical methods from the beginning of the nineteenth century. ...] (1898) and [[Elie Cartan]] (1908), served as advertisements to twentieth century algebraists, and they soon retired the term ''hypercomplex'' by displaying ...

...[[history of Islam]], traditionally dated from the 8th century to the 13th century.<ref name=Saliba>{{cite book|last=Saliba |first=George |author-link=George ...phor of a [[Golden age (metaphor)|golden age]] began to be applied in 19th-century literature about [[Islamic history]], in the context of the western aesthet ...

...win boundaries, a phenomenon reported in the 19th century and described in encyclopedias of crystal shapes.<ref>{{Cite book |last=Comte de Bournon |first=Jacques-Lo ...

...of the House of Representatives to honor the life and achievements of 19th Century Italian-American inventor Antonio Meucci, and his work in the invention of ...Amati/Amaticello.html|title=Violoncello by Andrea Amati, Cremona, Mid-16th Century|website=collections.nmmusd.org|access-date=2019-11-05}}</ref> ...