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CSR
2009
Springer
15 years 4 months ago
2009
Springer
63
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CSR
2009
Springer
15 years 4 months ago
2009
Springer
70
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CSR
2009
Springer
15 years 4 months ago
2009
Springer
86
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CSR
2009
Springer
15 years 1 months ago
2009
Springer
Abstract. We survey classical and selected recent work on the reachability problem over finitely presented infinite graphs. The problem has a history of 100 years, and it is centra...
77
Voted
CSR
2009
Springer
15 years 4 months ago
2009
Springer
A homomorphism from a graph G to a graph H (in this paper, both simple, undirected graphs) is a mapping f : V (G) → V (H) such that if uv ∈ E(G) then f(u)f(v) ∈ E(H). The pro...