Pencils of translation ovals in translation planes

1994 ◽  
Vol 51 (2) ◽  
pp. 113-121 ◽  
Author(s):  
D. G. Glynn ◽  
G. F. Steinke

1989 ◽  
Vol 36 (1-2) ◽  
pp. 110-116 ◽  
Author(s):  
Rainer L�wen




1994 ◽  
Vol 49 (1-2) ◽  
pp. 117-149 ◽  
Author(s):  
Norman L. Johnson ◽  
Rolando Pomareda
Keyword(s):  




2012 ◽  
Vol 02 (01) ◽  
pp. 35-43
Author(s):  
K. Satyanarayana ◽  
K. V. V. N. S. Sundari Kameswari
Keyword(s):  




1969 ◽  
Vol 21 ◽  
pp. 358-369 ◽  
Author(s):  
David A. Foulser

In a previous paper (5), I constructed a class of translation planes, called generalized André planes or λ-planes, and discussed the associated autotopism collineation groups. The main question unanswered in (5) is whether or not there exists a collineation η of a λ-plane Π which moves the two axes of Π but does not interchange them.The answer to this question is “no”, except if Π is a Hall plane (or possibly if the order n of Π is 34) (Corollary 2.8). This result makes it possible to determine the isomorphisms between λ-planes. More specifically, let Π and Π′ be two λ-planes of order n coordinatized by λ-systems Qand Q′, respectively. Then, except possibly if n = 34, Π and Π′ are isomorphic if and only if Q and Q′ are isotopic or anti-isotopic (Corollary 2.13). In particular, Π is an André plane if and only if Q is an André system (Corollary 2.14).



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