𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The military connection and environmental hazards of space‐based nuclear power

✍ Scribed by Prilutsky, Oleg F.; Rodionov, Stanislav N.

Book ID
121844587
Publisher
Taylor and Francis Group
Year
1989
Tongue
English
Weight
421 KB
Volume
1
Category
Article
ISSN
0892-9882

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✍ P Duchet; M Las Vergnas; H Meyniel 📂 Article 📅 1986 🏛 Elsevier Science 🌐 English ⚖ 602 KB

We investigate some properties of graphs whose cycle space has a basis constituted of triangles ('null-homotopic' graphs). We obtain characterizations in the case of planar graphs, and more generally, of graphs not contractible onto Ks. These characterizations involve separating subsets and decompos