Exceptional smooth Bol loops.
Exchangeable partial groupoids I
Exchangeable partial groupoids II
Extending the structural homomorphism of LCC loops
A loop is said to be left conjugacy closed if the set is closed under conjugation. Let be an LCC loop, let and be the left and right multiplication groups of respectively, and let be its inner mapping group, its multiplication group. By Drápal’s theorem [3, Theorem 2.8] there exists a homomorphism determined by . In this short note we examine different possible extensions of this and the uniqueness of these extensions.
Extension of Local Loop Isomorphisms.
Extensive varieties
-quasigroups isotopic to Moufang loops
F-quasigroups and generalized modules
In Kepka T., Kinyon M.K., Phillips J.D., The structure of F-quasigroups, J. Algebra 317 (2007), 435–461, we showed that every F-quasigroup is linear over a special kind of Moufang loop called an NK-loop. Here we extend this relationship by showing an equivalence between the class of (pointed) F-quasigroups and the class corresponding to a certain notion of generalized module (with noncommutative, nonassociative addition) for an associative ring.
F-quasigroups isotopic to groups
In Kepka T., Kinyon M.K., Phillips J.D., The structure of F-quasigroups, math.GR/0510298, we showed that every loop isotopic to an F-quasigroup is a Moufang loop. Here we characterize, via two simple identities, the class of F-quasigroups which are isotopic to groups. We call these quasigroups FG-quasigroups. We show that FG-quasigroups are linear over groups. We then use this fact to describe their structure. This gives us, for instance, a complete description of the simple FG-quasigroups. Finally,...
Free commutative idempotent abelian groupoids and quasigroups
Free entropic groupoids
Functional equations of generalized associativity, bisymmetry, transitivity and distributivity.
F-квазигруппы с идемпотентными элементами
--quasigroups.
Generalized distributivity equation on GD-groupoids
Generalized entropy on GD-groupoids with applications to quasigroups of various arities
Generalized graph cordiality
Hovey introduced A-cordial labelings in [4] as a simultaneous generalization of cordial and harmonious labelings. If A is an abelian group, then a labeling f: V(G) → A of the vertices of some graph G induces an edge-labeling on G; the edge uv receives the label f(u) + f(v). A graph G is A-cordial if there is a vertex-labeling such that (1) the vertex label classes differ in size by at most one and (2) the induced edge label classes differ in size by at most one. Research on A-cordiality...
Generating quasigroups for cryptographic applications
A method of generating a practically unlimited number of quasigroups of a (theoretically) arbitrary order using the computer algebra system Maple 7 is presented. This problem is crucial to cryptography and its solution permits to implement practical quasigroup-based endomorphic cryptosystems. The order of a quasigroup usually equals the number of characters of the alphabet used for recording both the plaintext and the ciphertext. From the practical viewpoint, the most important quasigroups are of...
Geodesic loops.
Global left loop structures on spheres
On the unit sphere in a real Hilbert space , we derive a binary operation such that is a power-associative Kikkawa left loop with two-sided identity , i.e., it has the left inverse, automorphic inverse, and properties. The operation is compatible with the symmetric space structure of . is not a loop, and the right translations which fail to be injective are easily characterized. satisfies the left power alternative and left Bol identities “almost everywhere” but not everywhere....