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Displaying 61 – 80 of 161

Matematika za karetní hrou dobble

Petr Stehlík (2019)

Pokroky matematiky, fyziky a astronomie

V tomto článku se zabýváme návazností populární karetní hry dobble na kombinatorické struktury. Ukazujeme, že existence dokonalých balíčků karet souvisí s existencí konečných projektivních rovin a systémů ortogonálních latinských čtverců. Dále pomocí obecnější struktury, blokových schémat, diskutujeme možnosti vytváření balíčků karet pro hry s modifikovanými pravidly. Výklad, příklady i přílohy jsou uzpůsobeny tomu, aby si čtenář mohl relativně jednoduše vytvořit vlastní karetní systémy.

Matrix spread sets of $p$ -primitive semifield planes.

Cordero, M. (1997)

International Journal of Mathematics and Mathematical Sciences

Medial quasigroups of type $(n, k)$

Alena Vanžurová (2010)

Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica

Our aim is to demonstrate how the apparatus of groupoid terms (on two variables) might be employed for studying properties of parallelism in the so called $(n, k)$ -quasigroups. We show that an incidence structure associated with a medial quasigroup of type $(n, k)$ , $n > k \geq 3$ , is either an affine space of dimension at least three, or a desarguesian plane. Conversely, if we start either with an affine space of order $k > 2$ and dimension $m$ , or with a desarguesian affine plane of order $k > 2$ then there is a medial quasigroup of...

Nilpotent Singer groups.

Gill, Nick (2006)

The Electronic Journal of Combinatorics [electronic only]

Note on Dembowski' s Groups of Collineations.

Ralph Hugh Francis Denniston (1968/1969)

Mathematische Zeitschrift

Note on weak epimorphisms of $3$ -nets without singular points

Václav Havel (1976)

Časopis pro pěstování matematiky

Obecné konečné geometrie

Marek Radoliński (1983)

Pokroky matematiky, fyziky a astronomie

On a class of partial $t$ -spreads of $P G (n, q)$ arising from scrolls.

Ballico, E., Cossidente, A. (2000)

Mathematica Pannonica

On a discrete version of the antipodal theorem

Krzysztof Oleszkiewicz (1996)

Fundamenta Mathematicae

The classical theorem of Borsuk and Ulam [2] says that for any continuous mapping $f : S^{k} \to ℝ^{k}$ there exists a point $x \in S^{k}$ such that f(-x) = f(x). In this note a discrete version of the antipodal theorem is proved in which $S^{k}$ is replaced by the set of vertices of a high-dimensional cube equipped with Hamming’s metric. In place of equality we obtain some optimal estimates of $i n f_{x} | | f (x) - f (- x) | |$ which were previously known (as far as the author knows) only for f linear (cf. [1]).

On Baer Subspaces of Finite Projective Spaces.

Albrecht Beutelspacher (1983)

Mathematische Zeitschrift

On collineation groups of translation planes of order $q^{4}$ .

Jha, V., Johnson, N.L. (1986)

International Journal of Mathematics and Mathematical Sciences

On Difference Matrices, Resolvable Transversal Designs and Generalized Hadamard Matrices.

Dieter Jungnickel (1979)

Mathematische Zeitschrift

On elations in semi-transitive planes.

Johnson, N.L. (1982)

International Journal of Mathematics and Mathematical Sciences

On flag-transitive anomalous $C_{3}$ -geometries.

Yoshiara, Satoshi, Pasini, Antonio (1993)

Beiträge zur Algebra und Geometrie

On Incidence Structures in Finite Classical Groups.

Gustav I. Lehrer (1976)

Mathematische Zeitschrift

On M.D.S. codes, arcs in PG(n,q) with q even, and a solution of three fundamental problems of B. Segre.

A.A. Bruen, J.A. Thas, A. Blokhuis (1988)

Inventiones mathematicae

On multiple nuclei and a conjecture of Lunelli and Sce.

Blokhuis, A. (1994)

Bulletin of the Belgian Mathematical Society - Simon Stevin

On Norm Three Vectors in Integral Euclidean Lattices. I.

Arnold Neumaier (1983)

Mathematische Zeitschrift

On optimal linear codes over $𝔽_{8}$ .

Kanazawa, Rie, Maruta, Tatsuya (2011)

The Electronic Journal of Combinatorics [electronic only]

On Projective Plane of Order 13 with a Frobenius Group of Order 39 as a Collineation Group

Hoxha, Razim (2001)

Serdica Mathematical Journal

One of the most outstanding problems in combinatorial mathematics and geometry is the problem of existence of finite projective planes whose order is not a prime power.

Currently displaying 61 – 80 of 161

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