Det arabiske talsystem: Forskelle mellem versioner

Man formoder, at det skyldes et ikke-indoeuropæisk befolkningsunderlag, som var stærkt nok til at påvirke indvandrerne. Dette "substrat", som det kaldes, har i øvrigt gjort, at de [[germansk sprog|germanske sprog]] er fyldt med ord, som ikke kan spores tilbage til det oprindelige, fælles indoeuropæiske sprog.

 

<ref>[http://www.fincher.org/History/World.shtml fincher.org: World History Timeline] Citat: "...3114 BC, Aug 13...Start of the Mayan calendar. The Mayans had 20 days in their month starting with day 0 and ending with day 19. They understood zero not only as a place holder, but as a true counting number..."</ref>

<ref>[http://members.shaw.ca/mjfinley/calnote.htm shaw.ca: Note on the Maya Calendar] Citat: "...Zero is usually indicated by a "shell" glyph...The long count is actually a modified base 20 number system: All periods except the tun are 20 times the previous period. The Maya used place holding arithmetic and the concept of zero before they were invented in the Old World..."</ref>

 

== Kilder/referencer ==