The exponent of Cartesian product of cycles
β Scribed by Byeong Moon Kim; Byung Chul Song; Woonjae Hwang
- Book ID
- 108052425
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 314 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0893-9659
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
The Cartesian product of two hamiltonian graphs is always hamiltonian. For directed graphs, the analogous statement is false. We show that the Cartesian product C,,, x C, , of directed cycles is hamiltonian if and only if the greatest common divisor (g.c.d.) d of n, and n, is a t least two and there
We say a digraph G is hyperhamiltonian if there is a spanning closed walk in G which passes through one vertex exactly twice and all others exactly once. We show the Cartesian product Z, x Z, of two directed cycles is hyperhamiltonian if and only if there are positive integers rn and n with ma + nb
## Abstract We show that the Cartesian product of two directed cycles __Z__~__a__~ X __Z__~__b__~ has __r__ disjointly embedded circuits __C__~1~, __C__~2~, β, __C__~r~ with specified knot classes knot__(C~i~) = (m~i~, n~i~)__, for __i__ = 1, 2, β, __r__, if and only if there exist relatively prime