Outputs (209)

Five-dimensional SCFTs and gauge theory phases: an M-theory/type IIA perspective (2019)
Journal Article
Closset, C., Del Zotto, M., & Saxena, V. (2019). Five-dimensional SCFTs and gauge theory phases: an M-theory/type IIA perspective. SciPost Physics, 6(5), Article 052. https://doi.org/10.21468/scipostphys.6.5.052

We revisit the correspondence between Calabi-Yau (CY) threefold isolated singularities X and five-dimensional superconformal field theories (SCFTs), which arise at low energy in M-theory on the space-time transverse to X. Focussing on the case of tor... Read More about Five-dimensional SCFTs and gauge theory phases: an M-theory/type IIA perspective.

Effective field theory of force-free electrodynamics (2019)
Journal Article
Gralla, S. E., & Iqbal, N. (2019). Effective field theory of force-free electrodynamics. Physical Review D, 99(10), Article 105004. https://doi.org/10.1103/physrevd.99.105004

Force-free electrodynamics (FFE) is a closed set of equations for the electromagnetic field of a magnetically dominated plasma. There are strong arguments for the existence of force-free plasmas near pulsars and active black holes, but FFE alone cann... Read More about Effective field theory of force-free electrodynamics.

Upsilon-like concordance invariants from sl(n) knot cohomology (2019)
Journal Article
Lewark, L., & Lobb, A. (2019). Upsilon-like concordance invariants from sl(n) knot cohomology. Geometry & Topology, 23(2), 745-780. https://doi.org/10.2140/gt.2019.23.745

We construct smooth concordance invariants of knots K which take the form of piecewise linear maps Çn.K/W Œ0; 1 ! R for n 2. These invariants arise from sln knot cohomology. We verify some properties which are analogous to those of the invariant ‡ (... Read More about Upsilon-like concordance invariants from sl(n) knot cohomology.

A support theorem for the X-ray transform on manifolds with plane covers (2019)
Journal Article
Peyerimhoff, N., & Samiou, E. (2020). A support theorem for the X-ray transform on manifolds with plane covers. Mathematical Proceedings of the Cambridge Philosophical Society, 169(1), 149-158. https://doi.org/10.1017/s0305004119000148

This paper is concerned with support theorems of the X-ray transform on non-compact manifolds with conjugate points. In particular, we prove that all simply connected 2-step nilpotent Lie groups have a support theorem. Important ingredients of the pr... Read More about A support theorem for the X-ray transform on manifolds with plane covers.

Prediction of default probability by using statistical models for rare events (2019)
Journal Article
Ogundimu, E. O. (2019). Prediction of default probability by using statistical models for rare events. Journal of the Royal Statistical Society: Series A, 182(4), 1143-1162. https://doi.org/10.1111/rssa.12467

Prediction models in credit scoring usually involve the use of data sets with highly imbalanced distributions of the event of interest (default). Logistic regression, which is widely used to estimate the probability of default, PD, often suffers from... Read More about Prediction of default probability by using statistical models for rare events.

Representation growth of compact linear groups (2019)
Journal Article
Häsä, J., & Stasinski, A. (2019). Representation growth of compact linear groups. Transactions of the American Mathematical Society, 372(2), 925-980. https://doi.org/10.1090/tran/7618

We study the representation growth of simple compact Lie groups and of SLn(O), where O is a compact discrete valuation ring, as well as the twist representation growth of GLn(O). This amounts to a study of the abscissae of convergence of the correspo... Read More about Representation growth of compact linear groups.

On regularisation methods for analysis of high dimensional data (2019)
Journal Article
Sirimongkolkasem, T., & Drikvandi, R. (2019). On regularisation methods for analysis of high dimensional data. Annals of Data Science, 6(4), 737-763. https://doi.org/10.1007/s40745-019-00209-4

High dimensional data are rapidly growing in many domains due to the development of technological advances which helps collect data with a large number of variables to better understand a given phenomenon of interest. Particular examples appear in ge... Read More about On regularisation methods for analysis of high dimensional data.

Reliability analysis of general phased mission systems with a new survival signature (2019)
Journal Article
Huang, X., Aslett, L. J., & Coolen, F. P. (2019). Reliability analysis of general phased mission systems with a new survival signature. Reliability Engineering & System Safety, 189, 416-422. https://doi.org/10.1016/j.ress.2019.04.019

It is often difficult for a phased mission system (PMS) to be highly reliable, because this entails achieving high reliability in every phase of operation. Consequently, reliability analysis of such systems is of critical importance. However, efficie... Read More about Reliability analysis of general phased mission systems with a new survival signature.

Non-negative curvature and the linking form (2019)
Other
Goette, S., Kerin, M., & Shankar, K. (2019). Non-negative curvature and the linking form

Magnetic-field evolution in a plastically failing neutron-star crust (2019)
Journal Article
Lander, S., & Gourgouliatos, K. (2019). Magnetic-field evolution in a plastically failing neutron-star crust. Monthly Notices of the Royal Astronomical Society, 486(3), 4130-4143. https://doi.org/10.1093/mnras/stz1042

Under normal conditions in a neutron-star (NS) crust, ions are locked in place in the crustal lattice and only electrons are mobile, and magnetic-field evolution is thus directly related to the electron velocity. The evolution, however, builds magnet... Read More about Magnetic-field evolution in a plastically failing neutron-star crust.