Characterizations of algebras of rapidly decreasing generalized functions

Characterizations of operator order for k strictly positive operators

Characterizations of the Hardy Space $H^1$ and BMO

Characterizing abelian admissible groups

Characterizing arbitrarily slow convergence in the method of alternating projections

Characterizing Hilbert space frames with the subframe property

Characterizing Hilbert spaces using Fourier transform over the field of p-adic numbers

Chernoff and Trotter type product formulas

Chernoff and Trotter-Kato theorems for locally convex spaces

Chernoff's theorem for backward propagators and applications to diffusions on manifolds

Chernoff's theorem for evolution families

CKS-space in terms of growth functions

Classes of Banach spaces stable and unstable with respect to the opening

Classes of generalized functions with finite type regularities

Classical limit of the d-bar operators on quantum domains

Classification of All Noncommutative Polynomials Whose Hessian Has Negative Signature One and A Noncommutative Second Fundamental Form

Classification of Banach Spaces --its Topological and Cardinality Properties

Classification of General Sequences by Frame-Related Operators

Classification of normal operators in spaces with indefinite scalar product of rank 2

Classifications of ultrametric spaces according to roundness