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................................................................................... 3 ........................................................................................ 4 ........................................................................................... 4 ..................................... 5 ............................. 9 ............................................................................. 9 ....................................................................................... 16 .......................................... 25 ..................... 25 ............................. 28 ............................. 29 ............................................................................... 39 ........................................ 63 .. 63 ................................................................................................. 63 ............................................................................................................ 64 ............................................................................................... 64 ℍ 𝔇 𝔇 𝔇 𝔇 𝔇. Siendo al igual que el modelo de Beltrami-Klein, la P P PQ m PQ P n P m P n S n P PS Teorema 3.1. Corolario 3.1.1. ∎ O OR X OX OR A B AB )(A B AB A B P P A B )(A B P P AB * *A P B P m n P m n A B A B A B A B A B AB A B A B AB C D C D A B )(C D AB )(C D )(C D A B A B ∎ * *A B C A B C * *C B A * *A B C B AC * *A B C * *C B A AC D E A B C )(D E * *A B C * *C B A ∎ m n P A B m n PA PB A B P m n O d P A B C B A C * *A B C 𝐸 𝐹 𝐺 F E G OF OE OG m n P 1 2 P m n m P )(A B m n P m n P AB A B )(A B m n O P Q 'O m Q 'P P m n m n m n m n m n m n m P m m 1t 2t m P m 1t 2t m m n n m m n n m m n m n k k k P m P n k P m P n r O P O 'P P 'P OP 2'OPO rP OP 'OP OP 'OP 'P P Teorema 3.2. O r 'P P P P 'P P 'P 'P P 'OP OP 2 2'OP OP OP r OP r P P OP r 2' 'OP OP r OP r 'OP r P 'P OP 'P P P OP r 2 ' 'OP r Or O PP 'r OP 'P P 'P ''P 'P 2'OPO rP 2'' 'OPO rP ''OP OP ''OP OP P ''P OP ''P P Teorema 3.3. P TU OP 'P P TU T U T OP 'P T OP Δ𝑂𝑃𝑇 Δ𝑂𝑇𝑃′ ∢𝑇𝑂𝑃 ∢𝑂𝑃𝑇 ∢𝑃′𝑇𝑂 ∢𝑶𝑷𝑻 ∢𝑷′𝑻𝑶 OT r ' OP OT OT OP ' OP r r OP 2'OP OP r 'P P OP T U T U 'P T U OP 'P TU ∎ Teorema 3.4. P Q OP O OQ QP T U PT PU 'P P TU OP T U T U ∢𝑂𝑇𝑃 ∢𝑂𝑈𝑃 ∢𝑶𝑻𝑷 ∢𝑶𝑼𝑷 TP UP P TU P 'P 'P TU OP 'P P 'P P Teorema 3.5. T U P TU PT PU ΔPTU ≅ ∆PUT OP TU P PT PU T U P TU ∢𝑂𝑃𝑇 ∢𝑂𝑈𝑃 Δ𝑂𝑇𝑃 Δ𝑂𝑈𝑃 PT PU PT PU PT PU Δ𝑃𝑇𝑈 ∢𝑃𝑇𝑈 ∢𝑃𝑈𝑇 OP TU ∢𝑷𝑻𝑼 ∢𝑷𝑼𝑻 TP UP T U P PT PU 𝑻�̂� ∎ Lema 3.1. O m n O 1 2,P P 1 2,Q Q 1 2 1 2O P QP OQO O O O t T O 2 OT O ∢𝑃2𝑃1𝑄2 ≅ ∢𝑃2𝑄1𝑄2 ∢𝑃1𝑄2𝑄1 ≅ ∢𝑃2𝑃1𝑄1 ∢𝑂𝑃1𝑄2 ∢𝑂𝑄1𝑃2 1 21 2 OP OQ OQ OP 1 2 1 2O P QP OQO O C OC 1P 2P 1 2* * *O P C P 1P 2P 1 2* * *O P C P 2 2 2 OT CT OC 2 2 2 1 2 1 2 OT OC CT OC CT OC CT OC CP OC CP OP OP ∎ Teorema 3.6. P P O P C 'P P 'P C 'PP 'PP CO CP O T OT OT 2 2'OT OP OP r T T U O T U O OP Q 2 2 OOT Qr OP 'Q P 'P P 'P P ∎ O P Q O P Q O 'P P 'P P P Q 'P PQ 'PP C D C P Q A A A A O A O 'A A C m 'AA A C n A C CA m n A A B P Q A B ,AB PQ , AP AB P AQ Q BQ BP AB AB A B P Q A B AB , ln ,d A B AB PQ P Q ,AB PQ x 1 ,AB QP x ln 1/ ln lnx x x , ,AB PQ AB QP ,d A B A B AB CD AB CD d AB d CD A P Q B A B * * *Q A B P * * *Q A B P ,AB PQ 1 AP AQ BP BQ PQ B A B Q CD E CD d AB d CE ln ln lnxy x y A B C * *A B C d AC d CB d AB P Q A B C * * * *Q A B C P AP BP BQ AQ , 1 BQ BQ A AP BP AB PQ BP BPQ BQ ,AC PQ ,BC PQ 1 ln , ln , ln , , d AC d CB AC PQ BC PQ AC PQ BC PQ , , , CQ BQ BQ AQ CQ A AP CP AP AC PQ BC PQ AB PQ CP BP B QP d AC d CB d AB O k O k O P O *P OP *OP k OP O k Lema 3.2. C s O k * *C ks Q * *Q Q O ,x y ,kx ky ,x y ax by c ax by ck CQ * *C Q Q *Q ax by c 2 2 2 1 2x h y h s 2 2 2 2 1 2x kh y kh k s 2 2 2 1 2x h y h s ∎ Teorema 3.7. O r C s O p O 2r k p ' ks *C C O k P 'P 't ' 'P 'PP P O OP Q P P Q OP 2' 'OP OP OP r pOQ OQ OP 'P Q O 2r k p * O k ' * ' *D ' 't ' 'P u Q 't u t P t u R ∢𝑅𝑄𝑃 ≅ ∢𝑅𝑃𝑄 t 't S ∢𝑆𝑃ʹ𝑃 ≅ ∢𝑆𝑃𝑃ʹ ∢𝑺𝑷ʹ𝑷 ∢𝑺𝑷𝑷ʹ ΔPSPʹ S 'PP 't t *PP 't t *PP ∎ Corolario 3.7.1. P 'p POP O 1k ' ' 2p r 'P P Lema 3.3. O P Q O 'P 'Q P Q ΔP𝑂𝑄 ΔQʹOPʹ ΔP𝑂𝑄 ΔQʹOPʹ ∢𝑃𝑂𝑄 2' 'OP OQOP r OQ ∎ 𝚫𝐏𝐎𝐐 𝚫𝑸ʹ𝑶𝑷ʹ Teorema 3.8. O O O A O P 'A 'P A P 'A 'P A P Δ𝑂𝐴𝑃 Δ𝑂𝑃ʹAʹ ∢𝑂𝑃ʹAʹ 'P 'OA 𝚫𝑶𝑨𝑷ʹ 𝚫𝑶𝑷ʹ𝐀ʹ 'P O OP P 'P P ∎ Teorema 3.9. O O O O 'A O A 'A OA A OA A O O ∎ Teorema 3.10. P m P 'P P ' ' 'm 'P ' ' 'm m 'PP P 'P ∎ Teorema 3.11. O , , ,A B P Q ', ', ', 'A B P Q , ' ', ' 'AB PQ A B P Q ' ' ' ' ' ' y AP A P AQ A Q OA OP OA OQ ' ' ' ' ' ' AP AP OA OQ A P AQ OA AQ OP A Q ' ' ' ' ' ' y BP B P BQ B Q OB OP OB OQ ' ' ' ' ' ' ' BQ BQ OB B Q O P BP OB BP OQ B P ' ' ' ' ' ' ' , ' ' ' ' ' ' ' ' ' ' ' ', ' ' ' ' ' ' AP BQ OQ A P B Q O P AB PQ AQ BP OP A Q OQ B P A P B Q A B P Q A Q B P ∎ Teorema 3.12. C s O r P 'P CP Q 'Q 2 ' ' CQ CP s CQ CP P Q 'Q 'CQ CP CQ 2 2 2 ' s s s CQ CP CQ ' 'CQ CP CQ 'P 'Q Q 'P ' ' O O C O ' C ' ' A B P Q A B P Q 'P 'Q 'A 'B ' 'd AB d A B B A D A B D d AD d AB d BD r O A B C A B A C 'A 'A A 'A s 2'' sAA OA ' 'AA A O AO 2 2 2 2' ' ' ' '' 'A O A Os AA A O AO AOA O A O A O r O A ΔABC ΔOBʹCʹ 𝚫𝐀𝐁𝐂 𝚫𝐎𝐁ʹ𝐂ʹ O ΔABC ΔXYZ ∢𝐴 ≅ ∢𝑋 d AC d XZ d AB d XY ΔABC ΔXYZ ΔOBʹCʹ Δ 𝑌ʹZʹ Lema 3.4. d OB d 1 1 d d r e OB e e r P Q B * * *Q O B P ln ,d d OB OB PQ ,d OP BQ BQ r OB e OB PQ OQ BP BP r OB OB 1 1 d d r e OB e ∎ A X O OB OY OC OZ ∆𝐵𝑂𝐶 ≅ ∆𝑌𝑂𝑍 O Δ𝑂𝐵𝐶 Δ𝑂𝑌𝑍 B C Y Z Δ𝑂𝐵𝐶 Δ𝑂𝑌𝑍 Teorema 3.13. d d 180 Teorema 3.14. tan 2 d de d d PQ P d P PQ Q P PQ P P R Q P R P ΔRPΣ ΔRΣP d ∢𝑅𝑃𝑄 ∢𝑃𝑅𝑄 ΔPRΣ ΔPRQ 2 2 2 2 PQ tanr 1 tan 1 tan de 4 2 1 tan 2 tan 4 2 1 tan 2 1 tan 1 tan1 tan 2 22 1 1 tan 1 tan 1 tan 1 tan 4 2 2 2 1 tan 1 tan 1 tan 1 tan 1 tan 4 2 2 2 2 1 1 tan 1 t 2 de an 2 2 1 tan 12 2 tan tan 2 2 1 tan 2 tan 2 d de ∎ http://www.amazon.com/s/ref=ntt_athr_dp_sr_1?_encoding=UTF8&field-author=Richard%20Courant&search-alias=books&sort=relevancerank http://www.amazon.com/s/ref=ntt_athr_dp_sr_2?_encoding=UTF8&field-author=Herbert%20Robbins&search-alias=books&sort=relevancerank http://www.amazon.com/s/ref=ntt_athr_dp_sr_3?_encoding=UTF8&field-author=Ian%20Stewart&search-alias=books&sort=relevancerank http://www.amazon.com/Robin-Hartshorne/e/B001IQZAEQ/ref=ntt_athr_dp_pel_1 http://www.ms.uky.edu/~droyster/courses/spring08/math6118/Classnotes/Chapter09.pdf http://www.ms.uky.edu/~droyster/courses/spring08/math6118/Classnotes/Chapter09.pdf http://www.math.cornell.edu/~mec/Winter2009/Mihai/section7.html http://mathworld.wolfram.com/Klein-BeltramiModel.html
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