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Title:Birsanova hipoteza
Authors:ID Ploj, Aleš (Author)
ID Hvala, Bojan (Mentor) More about this mentor... New window
Files:.pdf UN_Ploj_Ales_2016.pdf (1,43 MB)
MD5: 2383D014C3794C645CDABB922584713D
 
Language:Slovenian
Work type:Undergraduate thesis
Typology:2.11 - Undergraduate Thesis
Organization:FNM - Faculty of Natural Sciences and Mathematics
Abstract:V uvodnih poglavjih diplomskega dela so vpeljani osnovni matematični pojmi in definicije, predstavljeno je življenje italijanskega matematika Giovannija Ceve ter opisan in dokazan njegov izrek o konkurentnosti treh daljic v trikotniku - Cevov izrek. Sledi obravnava Birsanove hipoteze za težišče trikotnika G. To hipotezo nato posplošimo na poljubno točko P v trikotniku ter izpeljemo in dokažemo neke vrste splošno enačbo za obstoj točke P*. V zaključnem delu s splošno enačbo obravnavamo obstoj točke P* za nekatere značilne točke trikotnika: središče očrtanega kroga O, središče včrtanega kroga I, višinska točka H, Gergonneova točka Ge, Nagelova točka Na in simedianska točka K. Te točke tudi opišemo. Na koncu se izkaže, da vseh sedem obravnavanih značilnih točk trikotnika lahko uvrstimo v dve skupini glede njihovega obstoja toke P*.
Keywords:Birsanova hipoteza, značilne točke trikotnika, konkurentnost daljic, Cevov izrek, težišče trikotnika, središčni kot, obodni kot, tetivni štirikotnik, sinusni izrek, kosinusni izrek, središče očrtanega kroga, središče včrtanega kroga, višinska točka, Gergonneova točka, Nagelova točka, simedianska točka
Place of publishing:Maribor
Publisher:[A. Ploj]
Year of publishing:2016
PID:20.500.12556/DKUM-62476 New window
UDC:514(043.2)
COBISS.SI-ID:22757896 New window
NUK URN:URN:SI:UM:DK:XHVCFOCV
Publication date in DKUM:11.11.2016
Views:2231
Downloads:141
Metadata:XML DC-XML DC-RDF
Categories:FNM
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Secondary language

Language:English
Title:Birsan' s conjecture
Abstract:In the opening chapters of the thesis the basic mathematical terms and defnitions are introduced, the life and work of an Italian mathematician Giovanni Ceva is presented and his theorem about the concurrence the three line segments in a triangle - Ceva's theorem is described and proven. What follows is the description of the Birsan's conjecture of the centroid of a triangle. This hypothesis is then generalized. For any point P in a triangle a general condition for the existence of the point P* is derived and proven. In the final part we address the existence of the point P* for some triangle centers: the circumcenter O, the incenter I, orthocenter H, Gergonne point Ge, Nagel point Na and symmedian point K. At the end it is shown that we can classify all seven of the described triangle centers into two groups regarding the existence of their point P*.
Keywords:Birsan's conjecture, triangle center, concurrence of line segments, Ceva's theorem, centroid, central and inscribed angle, cyclic quadrialteral, sine and cosine theorems, circumcenter, incenter, orthocenter, Gergonne point, Nagel point, symedian point


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