Effect of linear lumping on controllability and observability

Effective construction of a class of positive operators in Hilbert space, which do not admit triangular factorization

Effective Construction of a Positive Operator which does not admit Triangular Factorization

Eigenfunctions of the Fourier-Plancherel Operator

Eight interesting identities involving the exponential function, derivatives, and Stirling numbers of the second kind

Eisenstein series and modular differential equations

Electrostatic models for zeros of polynomials: old, new, and some open problems

Elementary derivations of identities for bilateral basic hypergeometric series

Elementary derivations of summations and transformation formulas for q-series

Elementary evaluations of some Euler sums

Elementary proofs of Paley-Wiener theorems for the Dunkl transform on the real line

Elements of harmonic analysis

Elements of harmonic analysis, 2

Elements of harmonic analysis, 3

Elements of harmonic analysis, 4

Elements of harmonic analysis, 5

Elements of Linear and Real Analysis

Elements of Polya-Schur theory in finite difference setting

Ellipses of minimal area and of minimal eccentricity circumscribed about a convex quadrilateral

Elliptic Biorthogonal Polynomials Connected with Hermite's Continued Fraction