Sifuri
Sifuri (au sufuri kutoka Kiarabu sifr iliyotafsiri neno la Kisanskrit sunya lenye maana ya mahali patupu) ni namba ya pekee ambayo haina thamani peke yake, mpaka iandikwe baada ya namba nyingine yoyote: hapo inazidisha thamani yake mara kumi. Kwa kawaida inaandikwa 0 lakini ٠ kwa namba za Kiarabu.
Kwa Kiswahili namba hiyo inaitwa pia ziro kutokana na neno hilohilo la Kiarabu lakini kwa kupitia Kiitalia, Kifaransa na hatimaye Kiingereza (inapoandikwa zero).
Sifuri kama namba ilianza kutumika India kabla ya karne ya 9 BK, pengine hata karne ya 3.
Tanbihi
Marejeo
- Amir D. Aczel (2015) Finding Zero, New York City: Palgrave Macmillan. ISBN 978-1-137-27984-2
- Barrow, John D. (2001) The Book of Nothing, Vintage. ISBN 0-09-928845-1.
- Diehl, Richard A. (2004) The Olmecs: America's First Civilization, Thames & Hudson, London.
- Ifrah, Georges (2000) The Universal History of Numbers: From Prehistory to the Invention of the Computer, Wiley. ISBN 0-471-39340-1.
- Kaplan, Robert (2000) The Nothing That Is: A Natural History of Zero, Oxford: Oxford University Press.
- Seife, Charles (2000) Zero: The Biography of a Dangerous Idea, Penguin USA (Paper). ISBN 0-14-029647-6.
- Bourbaki, Nicolas (1998). Elements of the History of Mathematics. Berlin, Heidelberg, and New York: Springer-Verlag. ISBN 3-540-64767-8.
- Isaac Asimov (1978). Article "Nothing Counts" in Asimov on Numbers. Pocket Books.
Viungo vya nje
Wikimedia Commons ina media kuhusu:
- Search for the world's first zero leads to the home of Angkor Wat
- A History of Zero Ilihifadhiwa 4 Desemba 2008 kwenye Wayback Machine.
- Zero Saga
- The History of Algebra Ilihifadhiwa 9 Oktoba 2014 kwenye Wayback Machine.
- Edsger W. Dijkstra: Why numbering should start at zero, EWD831 (PDF of a handwritten manuscript)
- "My Hero Zero" Ilihifadhiwa 5 Februari 2009 kwenye Wayback Machine. Educational children's song in Schoolhouse Rock!
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Makala hii kuhusu mambo ya hisabati bado ni mbegu. Je, unajua kitu kuhusu Sifuri kama historia yake au mahusiano yake na mada nyingine? Labda unaona habari katika Wikipedia ya Kiingereza au lugha nyingine zinazofaa kutafsiriwa? Basi unaweza kuisaidia Wikipedia kwa kuihariri na kuongeza habari. |