We investigate asymptotic behavior of polynomials $$ Q_n(z) satisfying non-Hermitian orthogonality relations $$\begin{aligned} \int _\Delta s^kQ_n(s)\rho (s)\textrm{d}s =0, \quad k\in \{0,\ldots ,n-1\}, \end{aligned}$$ where \Delta is a Chebotarëv (minimal capacity) contour connecting three non-collinear points and \rho (s) Jacobi-type weight including possible power-type singularity at the cen...

The topology of the space of rooted oriented hexagonal knots embedded in R 3 is described, with special attention given to the number of components that make up this space and to the topological knot types which they represent. Two cases are considered: (i) hexagons with varying edge length, and (ii) equilateral hexagons with unit-length edges. The structure of these spaces then gives new notio...

NMR spectroscopy measurements have been used to obtain structural information about the pNR-2/pS2 single-domain trefoil peptide. NMR data from 2D (two dimensional) double-quantum-filtered correlation spectroscopy (DQF-COSY), total correlation spectroscopy (TOCSY), NOE spectroscopy (NOESY), rotating frame NOE spectroscopy (ROESY) and 2D 13C-1H heteronuclear single-quantum coherence (HSQC) and 13...