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On Grinbergs' differential geometry and finite fields
(2019-03-27)
Emanuels Grinbergs, in his youth, during ten years, from 1933 until 1943, wrote three dissertations on one subject, namely, differential geometry [1, 2, 3]. We think that his work in this direction has been neglected for ...
Using 2-colorings in the theory of uniquely Hamiltonian graphs
(2019-02)
We use the concept of 2-coloring in analyzing UH3 graphs and building exact specifications of functions to find new UH3 graphs by Hamiltonian cycle edge extractions
On Grinberg’s Criterion
(Universiteit Gent, Faculty of Science, 2019)
We generalize Grinberg’s hamiltonicity criterion for planar graphs. To this end, we first prove a technical theorem for embedded graphs. As a special case of a corollary of this theorem we obtain Zaks’ extension of Grinberg’s ...