Considering pseudo-Riemannian $g$-natural metrics on tangent bundles, we prove that the condition of being Ricci soliton is hereditary in sense a structure bundle gives rise to base manifold. Restricting ourselves some class metrics, show if and only manifold flat potential vector field complete lift conformal field. We give then classification fields Riemannian When unit bundles over constant ...

in this paper, biharmonic slant helices are studied according to bishop frame in the heisenberg group heis3. we give necessary and sufficient conditions for slant helices to be biharmonic. the biharmonic slant helices arecharacterized in terms of bishop frame in the heisenberg group heis3. we give some characterizations for tangent bishop spherical images of b-slant helix. additionally, we illu...

Abstract Recent progress in non-Hermitian physics and the notion of exceptional point (EP) degeneracies elastodynamics have led to development novel metamaterials for control elastic wave propagation, hypersensitive sensors, actuators. The emergence EPs a parity-time symmetric system relies on judiciously engineered balanced gain loss mechanisms. Creating requires complex circuits amplification...

New optimized 2x2 slotted array antenna is designed using HFSS to operate at 28.1 GHz, RT6010 substrate with height of 1.6 mm, tangent loss 0.0023 and dielectric constant 10.2 overall dimension 12x12 mm 2 , for 5G mobile applications. The linear achieved a high gain 18.3 dB GHz 10 bandwidth 1.39 83.21% size reduction.

a module is said to be $pi$-extending provided that every projection invariant submodule is essential in a direct summand of the module. in this paper, we focus on direct summands and indecomposable decompositions of $pi$-extending modules. to this end, we provide several counter examples including the tangent bundles of complex spheres of dimensions bigger than or equal to 5 and certain hyper ...