Results 61 to 70 of about 36,311 (322)
Nonlocal vertices and analyticity: Landau equations and general Cutkosky rule
Journal of High Energy Physics, 2018 We study the analyticity properties of amplitudes in theories with nonlocal vertices of the type occurring in string field theory and a wide class of nonlocal field theory models.
Paokuan Chin, E. T. Tomboulis
doaj +1 more source
The jump of the Milnor number of quasihomogeneous singularities for linear deformations [PDF]
, 2023 Aleksandra Zakrzewska
openalex +1 more source
Nodal deformations of singularities
Revista Matemática Complutense, 2002 Deformations of a plane curve singularity \((X,0)\) to \(\delta(X,0)\) nodes are studied using the methods of A'Campo. In particular, it is proved that singularities of type \(y^{d-1} - x^d\), \(y^{2d-1} - x^{2d+1}\) can be deformed into real morsifications preserving the degree of the original polynomial.
openaire +3 more sources
Advanced Engineering Materials, Volume 27, Issue 6, March 2025.ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur +5 more
wiley +1 more source
Hwang-Oguiso invariants and frozen singularities in special geometry
Journal of High Energy PhysicsIn Special Geometry there are two inequivalent notions of “Kodaira type” for a singular fiber: one associated with its local monodromy and one with its Hwang-Oguiso characteristic cycle.
Sergio Cecotti
doaj +1 more source
Wetting of Nematic Liquid Crystals on Crenellated Substrates: A Frank–Oseen Approach
Crystals, 2019 We revisit the wetting of nematic liquid crystals in contact with crenellated substrates, studied previously using the Landau−de Gennes formalism.
Óscar A. Rojas-Gómez +2 more
doaj +1 more source
Deformation and Smoothing of Singularities [PDF]
, 2020 This is intended as a chapter of the forthcoming "Handbook on the Geometry and Topology of Singularites"
openaire +2 more sources
Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control
Advanced Engineering Materials, EarlyView.This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian +4 more
wiley +1 more source
Stable tangential families and singularities of their envelopes [PDF]
, 2004 We study tangential families, i.e. systems of rays emanating tangentially from given curves. We classify, up to Left-Right equivalence, stable singularities of tangential family germs (under deformations among tangential families) and we study their ...
Capitanio, Gianmarco
core +2 more sources
Advanced Engineering Materials, EarlyView.Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat +6 more
wiley +1 more source