In this manuscript, we study the inverse problem for non self-adjoint Sturm--Liouville operator $-D^2+q$ with eigenparameter dependent boundary and discontinuity conditions inside a finite closed interval. By defining  a new Hilbert space and  using its spectral data of a kind, it is shown that the potential function can be uniquely determined by part of a set of values of eigenfunctions at som...

A composite spectral feature space is used to characterize the mixing properties of Sentinel 2 Multispectral Instrument (MSI) spectra over a wide diversity landscapes. Characterizing linearity and identifying bounding endmembers allows Substrate Vegetation Dark (SVD) mixture model previously developed for Landsat MODIS sensors be extended MSI sensors. The utility SVD its ability represent varie...

\.{Z}uk proved that if a finitely generated group admits Cayley graph such the Laplacian on links of this has spectral gap $> \frac{1}{2}$, then property (T), or equivalently, every affine isometric action Hilbert space fixed point. We prove same holds for actions uniformly curved Banach (for example an $L^p$-space with $1 < p \infty$ interpolation between and arbitrary space) as soon two-sided...