Damage to devices installed in electric substations, which have shown vulnerable behaviour under strong earthquakes the last decades, may endanger power delivery emergency phases during and after an earthquake. Within seismic risk assessment of networks, definition fragility functions equipment is paramount. However, current literature availability such models for some specific substation compo...

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We construct unramified central simple algebras representing 2-torsion classes in the Brauer group of a hyperelliptic curve, and show that every 2-torsion class can be constructed this way when the curve has a rational Weierstrass point or when the base field is C1. In general, we show that a large (but in general proper) subgroup of the 2torsion classes are given by the construction. Examples ...

In this brief note, we prove the following two Artin-Schreier curves are supersin-gular.

Fragility curves are a common tool to appraise the expected damage critical infrastructure (CI) after an earthquake event. Previous studies offer fragility curve parameters for CI that suitable vast range of systems, without in-depth examination system architecture and subcomponents. These applicable in cases where thorough analysis is not required or when information related single poor. This ...