Add to ORKGABSTRACT. Up to isomorphismthere are twenty-twosymmetric (70,24,8)designshavingautomorphismgroupisomorphicto Frob21 x Z2. Among themtherearefour self-dual,and nine pairsof dual designs.Full automorphismgroupsof thosedesignsareisomorphicto Frob21 x Z2. De-signsareconstructedby meansof tacticaldecomposition,usinga principal seriesof the groupFrob21 x Z2
Abstract. There are up to isomorphism and duality exactly three symmetric block designs (61,16,4) ad...
Abstract. There exist exactly 1122 pairwise non-isomorphic 2-(56,12,3) designs being the residual de...
AbstractLet Φ be a group acting semiregularly as automorphisms on the group (N,+). This gives rise t...
Up to isomorphism there are twenty-two symmetric (70,24,8) designs having automorphism group isomorp...
Abstract. Up to isomorphism there are three symmetric (66; 26; 10) designs with automorphism group i...
Up to isomorphism there are twenty-two symmetric (70,24,8) designs having automorphism group isomorp...
Abstract. Up to isomorphism there are precisely fty-four symmet-ric designs with parameters (47; 23;...
ABSTRACT. Up to isomorphismthereare 4 symmetric(36,15,6)de-signswith automorphismsof order 7 and 38 ...
ABSTRACT. The constructionof eight nonisomorphicnew symmetric (100,45,20)-designs,havingE25. S3 as t...
ABSTRACT. We provetheexistenceof twosymmetricdesignswith pa-rameters(256,120,56)for whichthefull aut...
Up to isomorphism there are precisely fifty-four symmetric designs with parameters (47,23,11) admitt...
Up to isomorphism there are precisely fifty-four symmetric designs with parameters (47,23,11) admitt...
Up to isomorphism there are three symmetric (66,26,10) designs with automorphism group isomorphic to...
Up to isomorphism there are three symmetric (66,26,10) designs with automorphism group isomorphic to...
AbstractWhilst studying a certain symmetric (99,49,24)-design acted upon by a Frobenius group of ord...
Abstract. There are up to isomorphism and duality exactly three symmetric block designs (61,16,4) ad...
Abstract. There exist exactly 1122 pairwise non-isomorphic 2-(56,12,3) designs being the residual de...
AbstractLet Φ be a group acting semiregularly as automorphisms on the group (N,+). This gives rise t...
Up to isomorphism there are twenty-two symmetric (70,24,8) designs having automorphism group isomorp...
Abstract. Up to isomorphism there are three symmetric (66; 26; 10) designs with automorphism group i...
Up to isomorphism there are twenty-two symmetric (70,24,8) designs having automorphism group isomorp...
Abstract. Up to isomorphism there are precisely fty-four symmet-ric designs with parameters (47; 23;...
ABSTRACT. Up to isomorphismthereare 4 symmetric(36,15,6)de-signswith automorphismsof order 7 and 38 ...
ABSTRACT. The constructionof eight nonisomorphicnew symmetric (100,45,20)-designs,havingE25. S3 as t...
ABSTRACT. We provetheexistenceof twosymmetricdesignswith pa-rameters(256,120,56)for whichthefull aut...
Up to isomorphism there are precisely fifty-four symmetric designs with parameters (47,23,11) admitt...
Up to isomorphism there are precisely fifty-four symmetric designs with parameters (47,23,11) admitt...
Up to isomorphism there are three symmetric (66,26,10) designs with automorphism group isomorphic to...
Up to isomorphism there are three symmetric (66,26,10) designs with automorphism group isomorphic to...
AbstractWhilst studying a certain symmetric (99,49,24)-design acted upon by a Frobenius group of ord...
Abstract. There are up to isomorphism and duality exactly three symmetric block designs (61,16,4) ad...
Abstract. There exist exactly 1122 pairwise non-isomorphic 2-(56,12,3) designs being the residual de...
AbstractLet Φ be a group acting semiregularly as automorphisms on the group (N,+). This gives rise t...