Zobrazeno 1 - 10 of 28 pro vyhledávání: '"Christian Pommerenke"'
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Akademický článek
Grupos de nudos con dos generadores
Autor: Christian Pommerenke, Margarita Toro
Publikováno v: Revista Integración, Vol 29, Iss 1, Pp 1-14 (2011)
Se estudian grupos de nudos que admiten una presentación con dos generadores y una relación. Decimos que una presentación �a, b | r� es palindrómica si r es una palabra palíndromo, es decir, r es una palabra que se lee lo mismo de adelant
Externí odkaz: https://doaj.org/article/176a1debe8a640f4b121bd25ab6c0016
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2
On a family of groups generated by parabolic matrices
Autor: Margarita Toro, Christian Pommerenke
Publikováno v: Revista Colombiana de Matemáticas. 53:221-236
We study various aspects of the family of groups generated by the parabolic matrices A(t1 ζ), ... , A(tm ζ) where A(z) = ( 1 z0 1 ) and by the elliptic matrix ( 0 -1 1 0 ). The elements of the matrices W in such groups can be computed by a recursio
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7272d27639e66589dd1d0b2310c050f3
https://doi.org/10.15446/recolma.v53n2.85541
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4
Discrete Space-time and Lorentz Transformations
Autor: Christian Pommerenke, Gerd Jensen
Publikováno v: Canadian Mathematical Bulletin. 59:123-135
Alfred Schild established conditions where Lorentz transformations map world-vectors (ct, x, y, z) with integer coordinates onto vectors of the same kind. The problem was dealt with in the context of tensor and spinor calculus. Due to Schild’s numb
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::44d4002567f80f41a8b4def443b81f55
https://doi.org/10.4153/cmb-2015-066-4
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5
On the parametrized modular group
Autor: Margarita Toro, Diego Mejía, Christian Pommerenke
Publikováno v: Journal d'Analyse Mathématique. 127:109-128
Generalizing the modular and Hecke groups, we consider the subgroup Π of SL(2, ℤ[ξ]) generated by the parabolic element \(\left( {_{01}^{1\xi } } \right)\) and the elliptic element \(\left( {_{10}^{0 - 1} } \right)\), where ℤ[ξ] is the ring of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0addb56bc55275bed477164e4c8c6034
https://doi.org/10.1007/s11854-015-0026-0
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6
On concave univalent functions
Autor: Lorena Cruz, Christian Pommerenke
Publikováno v: Complex Variables and Elliptic Equations. 52:153-159
Conformal maps of the unit disk onto convex domains are a classical topic. Recently Avkhadiev and Wirths discovered that conformal maps onto concave domains (the complements of convex closed sets) have some novel properties, namely that there are non
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b859847f79ba5f4c745312cf4e2521c5
https://doi.org/10.1080/17476930601063693
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7
Elektronická kniha
Boundary Behaviour of Conformal Maps
Autor: Christian Pommerenke
We study the boundary behaviour of a conformal map of the unit disk onto an arbitrary simply connected plane domain. A principal aim of the theory is to obtain a one-to-one correspondence between analytic properties of the function and geometrie prop
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8
Free subgroups of the parametrized modular group
Autor: Margarita Toro, Christian Pommerenke
Publikováno v: Repositorio UN
Universidad Nacional de Colombia
instacron:Universidad Nacional de Colombia
We study free subgroups of index four of the parametrized modular group Π, the subgroup of SL(2; Z[ξ]) generated by (10 ξ1) and (01 -10). There are eight free subgroups, four of which are normal and four are non-normal. Then we study the intersect
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5815e0154af20d1d736acb6e164cd704
https://doi.org/10.15446/recolma.v49n2.60445
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