Ulrich Reif

According to our database, Ulrich Reif authored at least 46 papers between 1993 and 2024.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2024

Sobolev regularity of bivariate isogeometric finite element spaces in case of a geometry map with degenerate corner.

Ulrich Reif

Adv. Comput. Math., December, 2024

2023

On the condition of cubic B-splines.

Tom Lyche, Knut Mørken, Ulrich Reif

J. Approx. Theory, May, 2023

Hybrid approach to the joint spectral radius computation.

Thomas Mejstrik, Ulrich Reif

CoRR, 2023

Sobolev Regularity of Isogeometric Finite Element Spaces with Degenerate Geometry Map.

Ulrich Reif

CoRR, 2023

2022

Surface patches with rounded corners.

Benjamin Marussig, Ulrich Reif

Comput. Aided Geom. Des., 2022

Stabilization of spline bases by extension.

Ba-Duong Chu, Florian Martin, Ulrich Reif

Adv. Comput. Math., 2022

2021

Clothoid fitting and geometric Hermite subdivision.

Ulrich Reif, Andreas Weinmann

Adv. Comput. Math., 2021

2020

Trimmed Spline Surfaces with Accurate Boundary Control.

Florian Martin, Ulrich Reif

CoRR, 2020

2019

Old problems and new challenges in subdivision.

Ulrich Reif, Malcolm A. Sabin

J. Comput. Appl. Math., 2019

Interactive Design and Simulation (Dagstuhl Seminar 19512).

Thomas A. Grandine, Jörg Peters, Ulrich Reif

Dagstuhl Reports, 2019

2016

On the volume of sets bounded by refinable functions.

Jan Hakenberg, Ulrich Reif

Appl. Math. Comput., 2016

Collocation with WEB-Splines.

Christian Apprich, Klaus Höllig, Jörg Hörner, Ulrich Reif

Adv. Comput. Math., 2016

2014

Two-stage approximation methods with extended B-splines.

Oleg Davydov, Jennifer Prasiswa, Ulrich Reif

Math. Comput., 2014

Approximation with diversified B-splines.

Ulrich Reif, Nada Sissouno

Comput. Aided Geom. Des., 2014

2013

Generalized Lane-Riesenfeld algorithms.

Thomas J. Cashman, Kai Hormann, Ulrich Reif

Comput. Aided Geom. Des., 2013

2012

Polynomial approximation on domains bounded by diffeomorphic images of graphs.

Ulrich Reif

J. Approx. Theory, 2012

Notes on the curvature tensor.

Nicole Lehmann, Ulrich Reif

Graph. Model., 2012

2010

Piecewise Linear Orthogonal Approximation.

Andreas App, Ulrich Reif

SIAM J. Numer. Anal., 2010

2009

Error bounds for polynomial tensor product interpolation.

Bernhard Mößner, Ulrich Reif

Computing, 2009

2008

Subdivision Surfaces

Jörg Peters, Ulrich Reif

Geometry and Computing 3, Springer, ISBN: 978-3-540-76406-9, 2008

Stability of tensor product B-splines on domains.

Bernhard Mößner, Ulrich Reif

J. Approx. Theory, 2008

2007

Extrapolation methods for approximating arc length and surface area.

Michael S. Floater, Atgeirr F. Rasmussen, Ulrich Reif

Numer. Algorithms, 2007

An Appropriate Geometric Invariant for the <i>C</i> ²-Analysis of Subdivision Surfaces.

Ulrich Reif

Proceedings of the Mathematics of Surfaces XII, 2007

2005

Guest Editors' Note.

Ulrich Reif, Karsten Große-Brauckmann

Comput. Aided Geom. Des., 2005

2004

Shape characterization of subdivision surfaces--basic principles.

Jörg Peters, Ulrich Reif

Comput. Aided Geom. Des., 2004

Shape characterization of subdivision surfaces--case studies.

Kestutis Karciauskas, Jörg Peters, Ulrich Reif

Comput. Aided Geom. Des., 2004

2003

In memoriam Josef Hoschek.

Ulrich Reif

Comput. Aided Geom. Des., 2003

Nonuniform web-splines.

Klaus Höllig, Ulrich Reif

Comput. Aided Geom. Des., 2003

2002

Multigrid methods with web-splines.

Klaus Höllig, Ulrich Reif, Joachim Wipper

Numerische Mathematik, 2002

2001

Weighted Extended B-Spline Approximation of Dirichlet Problems.

Klaus Höllig, Ulrich Reif, Joachim Wipper

SIAM J. Numer. Anal., 2001

Curvature integrability of subdivision surfaces.

Ulrich Reif, Peter Schröder

Adv. Comput. Math., 2001

2000

Best bounds on the approximation of polynomials and splines by their control structure.

Ulrich Reif

Comput. Aided Geom. Des., 2000

1999

On the local existence of the quadratic geometric Hermite interpolant.

Ulrich Reif

Comput. Aided Geom. Des., 1999

Polynomial degree reduction in the L2-norm equals best Euclidean approximation of Bézier coefficients.

David Lutterkort, Jörg Peters, Ulrich Reif

Comput. Aided Geom. Des., 1999

Degree estimates for <i>C</i>^k-piecewise polynomial subdivision surfaces.

Hartmut Prautzsch, Ulrich Reif

Adv. Comput. Math., 1999

Analyse und Konstruktion von Subdivisionsalgorithmen für Freiformflächen beliebiger Topologie.

Ulrich Reif

Berichte aus der Mathematik, Shaker, ISBN: 978-3-8265-4695-2, 1999

1998

The 42 equivalence classes of quadratic surfaces in affine n-space.

Jörg Peters, Ulrich Reif

Comput. Aided Geom. Des., 1998

1997

The Simplest Subdivision Scheme for Smoothing Polyhedra.

Jörg Peters, Ulrich Reif

ACM Trans. Graph., 1997

Uniform B-spline approximation in Sobolev spaces.

Ulrich Reif

Numer. Algorithms, 1997

Degenerate Bézier patches with continuous curvature.

H. Bohl, Ulrich Reif

Comput. Aided Geom. Des., 1997

Orthogonality Relations for Cardinal B-Splines over Bounded Intervals.

Ulrich Reif

Proceedings of the Geometric Modeling: Theory and Practice, 1997

1995

A note on degenerate triangular Bézier patches.

Ulrich Reif

Comput. Aided Geom. Des., 1995

Biquadratic G-spline surfaces.

Ulrich Reif

Comput. Aided Geom. Des., 1995

A unified approach to subdivision algorithms near extraordinary vertices.

Ulrich Reif

Comput. Aided Geom. Des., 1995

A counterexample to a corollary of Kim et al..

Günter Aumann, Ulrich Reif, Klaus Spitzmüller

Comput. Aided Geom. Des., 1995

1993

Neue Aspekte in der Theorie der Freiformflächen beliebiger Topologie.

Ulrich Reif

PhD thesis, 1993