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Université de Fribourg

Maximum eccentric connectivity index for graphs with given diameter

Hauweele, Pierre ; Hertz, Alain ; Mélot, Hadrien ; Ries, Bernard ; Devillez, Gauvain

In: Discrete Applied Mathematics, 2019, vol. 268, p. 102-111

The eccentricity of a vertex v in a graph G is the maximum distance between v and any other vertex of G. The diameter of a graph G is the maximum eccentricity of a vertex in G. The eccentric connectivity index of a connected graph is the sum over all vertices of the product between eccentricity and degree. Given two integers n and D with D ≤ n−1, we characterize those graphs which have...

Université de Fribourg

Cyclostratigraphy of shallow-marine carbonates – limitations and opportunities

Strasser, André

In: Stratigraphy & Timescales, 2018, vol. 3, p. 151–187

The sedimentary record of ancient shallow-marine carbonate platforms commonly displays a stacking of different facies, which reflects repetitive changes of depositional environments through time. These changes can be induced by external factors such as cyclical changes in climate and/or sea level, but also by internal factors such as lateral migration of sediment bodies and/or changes in the...

Consortium of Swiss Academic Libraries

X-ray spectroscopy of stars

Güdel, Manuel ; Nazé, Yaël

In: The Astronomy and Astrophysics Review, 2009, vol. 17, no. 3, p. 309-408

Consortium of Swiss Academic Libraries

Solar Variability Over the Past Several Millennia

Beer, J. ; Vonmoos, M. ; Muscheler, R.

In: Space Science Reviews, 2006, vol. 125, no. 1-4, p. 67-79

Consortium of Swiss Academic Libraries

The electron-cyclotron maser for astrophysical application

Treumann, Rudolf

In: The Astronomy and Astrophysics Review, 2006, vol. 13, no. 4, p. 229-315