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Title:Diophantine Steiner triples
Authors:ID Hvala, Bojan (Author)
Files:URL http://www.imfm.si/preprinti/PDF/01117.pdf
 
Language:English
Work type:Not categorized
Organization:FNM - Faculty of Natural Sciences and Mathematics
Abstract:V članku opišemo vse trojice ▫$(R, r, d)$▫, ▫$R > r+d$▫, naravnih števil, za katere ima konfiguracija dveh krogov z radiji ▫$R$▫ in ▫$r$▫ ter razdaljo ▫$d$▫ med središči sklenjeno Steinerjevo verigo. To pomeni, da obstaja cilkično zaporedje ▫$n$▫ krogov, ki se dotikajo začetnih dveh krogov in se dotikajo sosednjih krogov v cikličnem zaporedju. Izkaže se, da je v primeru naravnih vrednosti ▫$R$▫, ▫$r$▫ in ▫$d$▫ dolžina ▫$n$▫ Steinerjeve verige lahko le 3, 4 ali 6.
Keywords:matematika, diofantske Steinerjeve trojice, Steinerjev porizem, Steinerjeva formula, diofantske enačbe, mathematics, dDiophantine Steiner triples, Steiner porism, Steiner identity, diophantine equations
Year of publishing:2010
Number of pages:str. 1-8
Numbering:Vol. 48, št. 1117
PID:20.500.12556/DKUM-49387 New window
ISSN:2232-2094
UDC:514.112:511
COBISS.SI-ID:15534681 New window
NUK URN:URN:SI:UM:DK:LZU0AVQT
Publication date in DKUM:10.07.2015
Views:1481
Downloads:143
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Categories:Misc.
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Secondary language

Language:Unknown
Title:Diofantske Steinerjeve trojice
Abstract:We describe all integer triples ▫$(R,r,d)$▫, ▫$R > r + d$▫, for which a configuration of two circles of radii ▫$R$▫ and ▫$r$▫ with the centers ▫$d$▫ apart possesses a closed Steiner chain. This means that there exists a cyclic sequence of ▫$n$▫ circles which are tangent to the starting two circles, and each of them is tangent to its two neighbors in the sequence. It appears that in the case of integer valued ▫$R$▫, ▫$r$▫ and ▫$d$▫, the only possible values for the lengths ▫$n$▫ of the Steiner chains are 3, 4 or 6.


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