Let $T$ be a non-trivial tournament. An arc is emph{$t$-pancyclic} in $T$, if it is contained in a cycle of length $ell$ for every $tleq ell leq |V(T)|$. Let $p^t(T)$ denote the number of $t$-pancyclic arcs in $T$ and $h^t(T)$ the maximum number of $t$-pancyclic arcs contained in the same Hamiltonian cycle of $T$. Moon ({em J. Combin. Inform. System Sci.}, {bf 19} (1994), 207-214) showed that $...

The objective of this study is to establish links between the features geodynamic evolution complex, heterogeneous in its geological structure Caspian megadepression and adjacent regions – with issues assessing prospects for oil gas potential entire territory. For purpose, data published works on above territory were analyzed and, based analysis, a summary map was compiled, combined optimal sys...

The Kamchatka Peninsula lies on the eastern active margin of Eurasia, adjacent to Kuril-Kamchatka subduction zone. In this study, we provide a geomorphological map Central Depression – largest sedimentary basin in and also all island arcs North Pacific. depression extends along at latitudes ∼44–46° N for more than 400 km is up 100 wide. designed scale 1:500,000 contains ∼3000 mapped objects. Vo...