Thanks to this analysis, we construct explicit examples of Calabi-Yau with torsion Hermitian structures and prove a uniqueness result for them.doi:10.1007/s12220-023-01203-2giuseppebarbaroSpringer USThe Journal of Geometric Analysis
PGT is the general the- ory which may be constructed from spacetime curvature and torsion. Whether or not the same caveats resolve the causal question here [13], the proclivity for strong coupling in this class remains, and has yet to be seriously addressed. To this end, we target the ...
In order to construct overcurved circles, four pieces of Salkowski curves are thus connected while respecting the D2d symmetry of the problem and ensuring the continuity of the torsion t(s). This can be done by generalizing a procedure recently proposed by Monterde29 based on previous work by ...
The centre line can also be defined mathematically by its local curvature κ(s) and torsion τ(s)22. Our analysis will be restricted to untwisted rings having a centre line of constant curvature κ, and a locally variable torsion τ(s) that integrates to zero over the ring. Such rings ...
(or, more generally, a manifold M with a torsion-free affine connection ∇) and g is its holonomy algebra at a point x∈M, then g is a Berger algebra, the value Rx of the curvature tensor R of (M,g) at the point x belongs to R(g), and the value of the Ricci tensor Ric ...
HiGGS is an (unofficial) part of thexAct bundle. It provides tools for the Hamiltonian constraint analysis (canoncical analysis or Dirac-Bergmann algorithm) of gravity with spacetime curvature and torsion. HiGGS can be used on a desktop PC, but it is parallelised for theory surveys on clusters...
be the curvature operator defined by a torsion free connection ∇ on the tangent bundle of a smooth manifold M. Following Opzoda [21], we say that (M, ∇) is affine k-curvature homogeneous if given any two points P and Q of M, there is a linear isomorphism φ : T P M→...
Horizontal cylinder-in-cylinder buckling under compression and torsion: review and application to composite drill pipe Int. J. Mech. Sci., 50 (2008), pp. 538-549, 10.1016/j.ijmecsci.2007.08.005 View PDFView articleView in ScopusGoogle Scholar Wu, 1995 J. Wu Slack-off load transmission in...
Typical examples of manifolds admitting metric connections with parallel skew torsion include Sasaki, nearly parallel G2, nearly Kähler and several others (see also the recent paper [12]). 123 2010 I. Agricola et al. The fact that ∇T = 0 implies dT = 2σT , where σT is the 4-...
and cross-sectional geometry allow the device to have varied degrees of strength in different anatomic planes as desired, thereby inhibiting undesired torsion or other forces on the device. Each semi-rigid rod is deformable when taken individually, but in a preferred embodiment, the overall ...