Skip to main content (access key 's'), Skip to navigation (access key 'n'), Accessibility information (access key '0')

Back to Simple Search

Advanced Search

Match of the following rules

Add Another Rule

Contains the following math formula (red border means the formula is incomplete)

Formula preview

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

The search session has expired. Please query the service again.

Currently displaying 1 – 1 of 1

Order by Relevance | Title | Year of publication

$T$ -preserving homomorphisms of oriented graphs

Jaroslav Nešetřil; Eric Sopena; Laurence Vignal — 1997

Commentationes Mathematicae Universitatis Carolinae

A homomorphism of an oriented graph $G = (V, A)$ to an oriented graph $G^{'} = (V^{'}, A^{'})$ is a mapping $ϕ$ from $V$ to $V^{'}$ such that $ϕ (u) ϕ (v)$ is an arc in $G^{'}$ whenever $u v$ is an arc in $G$ . A homomorphism of $G$ to $G^{'}$ is said to be $T$ -preserving for some oriented graph $T$ if for every connected subgraph $H$ of $G$ isomorphic to a subgraph of $T$ , $H$ is isomorphic to its homomorphic image in $G^{'}$ . The $T$ -preserving oriented chromatic number ${\vec{χ}}_{T} (G)$ of an oriented graph $G$ is the minimum number of vertices in an oriented graph $G^{'}$ such that there exists a $T$ -preserving...

Page 1

Download Results (CSV)