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Mathematics

D-Index
34
Citations
6779
World Ranking
2871
National Ranking
16

Overview

Christian Berg is affiliated with the University of Copenhagen in Denmark and specializes primarily in Mathematics, with substantial contributions in Mathematical Physics and Applied Mathematics. Their research extends into interdisciplinary areas including Ocean Engineering and Computational Theory.

Their recent publications cover a range of topics from mathematical theory to practical engineering applications. Notable papers include:

  • "Modeling and Numerical Implementation of Managed-Pressure-Drilling Systems for the Assessment of Pressure-Control Systems," 2020, published in SPE Drilling & Completion
  • "Self-adjoint operators associated with Hankel moment matrices," 2022, published in Journal of Functional Analysis
  • "A Family of Entire Functions Connecting the Bessel Function J₁ and the Lambert W Function," 2020, published in Constructive Approximation
  • "Pressure wave propagation in Managed Pressure Drilling model comparison with real life data," 2020, published in Linköping electronic conference proceedings
  • "The Influx Management Envelope, Sensitivity of Model Choice," 2020, published in SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition

Their research spans several key topics within mathematical and engineering sciences, such as:

  • Spectral Theory in Mathematical Physics
  • Mathematical Functions and Polynomials
  • Drilling and Well Engineering
  • Matrix Theory and Algorithms
  • Numerical Methods in Inverse Problems
  • Hydraulic Fracturing and Reservoir Analysis
  • Oil and Gas Production Techniques

Christian Berg has collaborated extensively with a number of researchers, including:

  • Ryszard Szwarc
  • Jon Åge Stakvik
  • Laura Iapichino
  • W.H.A. Schilders
  • Nathan van de Wouw

Their work is frequently published in venues such as:

  • arXiv (Cornell University)
  • ZI Zahnärztliche Implantologie
  • SPE Drilling & Completion
  • Journal of Functional Analysis
  • Constructive Approximation

In addition to journal articles and conference papers, Christian Berg has authored a book published by oekom verlag: Ist Nachhaltigkeit utopisch? Wie wir Barrieren überwinden und zukunftsfähig handeln (2020), which has been cited 117 times.

Best Publications

  • Harmonic Analysis on Semigroups

    Christian Berg;Jens Peter Reus Christensen;Paul Ressel

  • Potential Theory on Locally Compact Abelian Groups

    Christian Berg;Gunnar Forst

  • Harmonic Analysis on Semigroups: Theory of Positive Definite and Related Functions

    Christian Berg;Jens Peter Reus Christensen;Paul Ressel

  • Integral representation of some functions related to the Gamma function

    Christian Berg

  • Density questions in the classical theory of moments

    Christian Berg;J. P. Reus Christensen

  • A remark on the multidimensional moment problem

    C. Berg;J. P. R. Christensen;C. U. Jensen

  • Some classes of completely monotonic functions

    Horst Alzer;Christian Berg

  • Some classes of completely monotonic functions, II

    Horst Alzer;Christian Berg

  • Positive definite functions on Abelian semigroups

    Christian Berg;Jens Peter Reus Christensen Christensen;Paul Ressel

  • Indeterminate moment problems and the theory of entire functions

    Christian Berg

  • Rotation invariant moment problems

    Christian Berg;Marco Thill

  • The Nevanlinna parametrization for some indeterminate Stieltjes moment problems associated with birth and death processes

    Christian Berg;Galliano Valent

  • Stieltjes-Pick-Bernstein-Schoenberg and their connection to complete monotonicity

    Christian Berg

  • From Schoenberg Coefficients to Schoenberg Functions

    Christian Berg;Emilio Porcu

  • A completely monotone function related to the Gamma function

    Christian Berg;Henrik L. Pedersen

  • Exponentially bounded positive definite functions

    Christian Berg;P. H. Maserick

  • Generation of generators of holomorphic semigroups

    Christian Berg;Khristo Boyadzhiev;Ralph Delaubenfels

  • Q-Hermite Polynomials and Classical Orthogonal Polynomials

    Christian Berg;Mourad E. H. Ismail

  • The Cube of a Normal Distribution is Indeterminate

    Christian Berg

  • The Dagum family of isotropic correlation functions

    Christian Berg;Jorge Mateu;Emilio Porcu

  • Small eigenvalues of large Hankel matrices: The indeterminate case

    Christian Berg;Yang Chen;Mourad E. H. Ismail

Frequent Co-Authors

Jens Peter Christensen
Jens Peter Christensen University of Copenhagen
Antonio J. Durán
Antonio J. Durán University of Seville
Emilio Porcu
Emilio Porcu Khalifa University
Mette M. Rosenkilde
Mette M. Rosenkilde University of Copenhagen
Mourad E. H. Ismail
Mourad E. H. Ismail University of Louisiana at Lafayette
Jorge Mateu
Jorge Mateu Jaume I University
Richard A. Kroczek
Richard A. Kroczek Robert Koch Institute
Thomas Benfield
Thomas Benfield Copenhagen University Hospital
Feng Qi
Feng Qi Henan Polytechnic University

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