Karzel, Helmut

Karzel, Helmut  

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Data di pubblicazione Titolo Autore(i) File
1-gen-2014 A class of fibered loops related to general hyperbolic planes Pianta, Silvia; Karzel, Helmut; Pasotti, Stefano
1-gen-2012 Absolute planes with elliptic congruence Marchi, Mario; Bonenti, Francesca; Karzel, Helmut
1-gen-2008 Bynary operations derived from symmetric permutation sets and applications to absolute geometry Karzel, Helmut; Pianta, Silvia
1-gen-2005 From involution sets, graphs and loops to loop-nearrings Karzel, Helmut; Pianta, Silvia; Zizioli, Elena
1-gen-2003 Involution sets, graphs with parallelism and loops Pianta, Silvia; Karzel, Helmut; Zizioli, Elena
1-gen-2002 K-loops derived from Frobenius groups Pianta, Silvia; Karzel, Helmut; Zizioli, Elena
1-gen-2005 Left loops, bipartite graphs with parallelism and bipartite involution sets Karzel, Helmut; Pianta, Silvia
1-gen-2007 Legendre-like theorems in a general absolute geometry. Pianta, Silvia; Marchi, Mario; Karzel, Helmut
1-gen-2002 Loops, reflection structures and graphs with parallelism Pianta, Silvia; Karzel, Helmut; Zizioli, Elena
1-gen-2006 Polar graphs and corresponding involution sets, loops and Steiner triple systems Karzel, Helmut; Pianta, Silvia; Zizioli, Elena
1-gen-2009 Three-reflection theorems in the hyperbolic plane Marchi, Mario; Pianta, Silvia; Karzel, Helmut