under construction
on polynomial inequalities for cone-volumes of polytopes
jointly with Tom Baumbach
arXiv: 2506.15370
arXiv: 2506.15370
Minkowski’s successive minima II
jointly with Jörg M. Wills
TIMC Bulletin 7(4), 2026, special issue in memory of Padma Bhushan Prof. R. P. Bambah.
TIMC Bulletin 7(4), 2026, special issue in memory of Padma Bhushan Prof. R. P. Bambah.
sparsity and integrality gap transference bounds for integer programs
jointly with Iskander Aliev and
Marcel Celaya
accepted for IPCO 2024; arXiv:2311.06605
extended version entitled sparsity and proximity transference in integer programming Math. Program. B. (2025), doi.org/10.1007/s10107-024-02191-z .
accepted for IPCO 2024; arXiv:2311.06605
extended version entitled sparsity and proximity transference in integer programming Math. Program. B. (2025), doi.org/10.1007/s10107-024-02191-z .
note on projection bodies of
zonotopes
with n+1 generators
Acta Mathematica Scientia, 45B(1), 2025, 1 - 8.
polynomial bounds in Koldobsky's discrete slicing problem
jointly with Ansgar Freyer
Proc. Amer. Math. Soc., 152(7), 2024, 3063 - 3074 arXiv:2303.15976
Proc. Amer. Math. Soc., 152(7), 2024, 3063 - 3074 arXiv:2303.15976
new bounds for the integer carathéodory rank
jointly with Iskander Aliev, Mark Hogan, Stefan Kuhlmann, and
Timm Oertel
SIAM J. Optim., 34(1), 2024, 190--200; arXiv:2211.03150
SIAM J. Optim., 34(1), 2024, 190--200; arXiv:2211.03150
on subspace concentration for dual curvature measures
jointly with Katharina Eller
Advances in Applied Mathematics, 151, 2023, 102581; arXiv:2302.09917
Advances in Applied Mathematics, 151, 2023, 102581; arXiv:2302.09917
Minkowski's successive minima in convex and discrete geometry
jointly with Iskander Aliev
Communications in Mathematics, 2023, 31, 35 - 59; arXiv:2304.00120
Communications in Mathematics, 2023, 31, 35 - 59; arXiv:2304.00120
affine subspace concentration conditions for centered polytopes
jointly with Ansgar Freyer and Christian Kipp
Mathematika, 69(2), 2023, 458 - 472; arXiv:2207.08477
Mathematika, 69(2), 2023, 458 - 472; arXiv:2207.08477
on the geometry of elementary flux modes
jointly with Alexander Bockmayr and Frederick Wieder
Journal of Mathematical Biology, 2023, 87:50; biorxiv 2022.09.24.509324
Journal of Mathematical Biology, 2023, 87:50; biorxiv 2022.09.24.509324
on lattice width of lattice-free polyhedra and height of Hilbert bases
jointly with Stefan Kuhlmann and Robert Weismantel
SIAM J. Discrete Math., 36, 2022, no. 3, 1918–1942; arXiv:2110.02893
SIAM J. Discrete Math., 36, 2022, no. 3, 1918–1942; arXiv:2110.02893
proximity bounds for random integer programs
jointly with Marcel Celaya
Math. Program. (B) (2022). online; Preprint 05-2020 TU Berlin, 2020
Math. Program. (B) (2022). online; Preprint 05-2020 TU Berlin, 2020
packing minima and lattice points in convex bodies
jointly with Matthias Schymura and Fei Xue
Moscow Journal of Combinatorics and Number Theory, 10-1, 2021, 25–48; arXiv:2005.02234
Moscow Journal of Combinatorics and Number Theory, 10-1, 2021, 25–48; arXiv:2005.02234
distance-sparsity transference for vertices of corner polyhedra
jointly with Iskander Aliev, Marcel Celaya, and Aled Williams
SIAM J. Optim., 31(1), 2021, 200 - 216; arXiv:2007.00950
SIAM J. Optim., 31(1), 2021, 200 - 216; arXiv:2007.00950
bounds on the lattice point enumerator via slices and projections
jointly with Ansgar Freyer
Discrete Comput. Geom. 2022, 67:895–-918; arXiv:2004.14097
Discrete Comput. Geom. 2022, 67:895–-918; arXiv:2004.14097
packings, sausages and catastrophes
jointly with Jörg M. Wills
Beiträge zur Algbera und Geometrie, 62, (2021), 265–280 preprint tu berlin-04/2020; (open access)
Beiträge zur Algbera und Geometrie, 62, (2021), 265–280 preprint tu berlin-04/2020; (open access)
discrete analogues of John’s theorem
jointly with Sören Berg
Moscow Journal of Combinatorics and Number Theory 8-4 (2019), 367-378; arxiv:1809.08943
Moscow Journal of Combinatorics and Number Theory 8-4 (2019), 367-378; arxiv:1809.08943
on successive minima-type inequalities for the polar of a convex body
jointly with Fei Xue
Rev. R. Acad. Cienc. Exactas Fís. Nat. Ser. A Mat. RACSAM 113 (2019), no. 3, 2601–2616; arxiv:1809.08943
Rev. R. Acad. Cienc. Exactas Fís. Nat. Ser. A Mat. RACSAM 113 (2019), no. 3, 2601–2616; arxiv:1809.08943
distances to lattice points in knapsack polyhedra
jointly with Iskander Aliev and Timm Oertel
Math. Programming Series A 182 (2020), 175–-198; arxiv:1805.04592
Math. Programming Series A 182 (2020), 175–-198; arxiv:1805.04592
a characterization of dual quermassintegrals and the roots of dual steiner polynomials
jointly with David Alonso-Gutiérrez and María A. Hernández Cifre
Adv. Math. 331 (20), 2018, 565-588; arXiv:1707.01675
Adv. Math. 331 (20), 2018, 565-588; arXiv:1707.01675
on the the log-minkowski inequality
for simplices and parallelepipeds
jointly with Hannes Pollehn
Acta Math. Hungar. 155 (1), 2018, 141-157.
Acta Math. Hungar. 155 (1), 2018, 141-157.
necessary subspace concentration conditions for the even dual minkowski problem
jointly with Hannes Pollehn
Adv. Math. 323, 2018, 114-141 temporary access; arXiv:1703.10528
Adv. Math. 323, 2018, 114-141 temporary access; arXiv:1703.10528
a note on lattice packings via lattice refinements
Experimental Mathematics 27(1), 2018, 1-9; preprint tu berlin,
update
subspace concentration of dual curvature measures
jointly with Károly Böröczky and Hannes Pollehn
J. Differential Geometry 109(3), 2018, 411 - 429; arXiv:1604.07390
J. Differential Geometry 109(3), 2018, 411 - 429; arXiv:1604.07390
integrality gaps of integer knapsack problems
jointly with Iskander Aliev and Timm Oertel
IPCO 2017, Waterloo, ON, Canada, June 26-28, 2017, Proceedings, 25-38; arXiv:1611.03768
IPCO 2017, Waterloo, ON, Canada, June 26-28, 2017, Proceedings, 25-38; arXiv:1611.03768
cone-volume measure and stability
jointly with Károly J. Böröczky
Adv. Math. 306, 2017, 24-50; arXiv:1407.7272
Adv. Math. 306, 2017, 24-50; arXiv:1407.7272
a discrete version of koldobsky's slicing inequality
jointly with Matthew Alexander and Artem Zvavitch
Israel J. Math. 222(1), 2017, 261–278; arXiv:1511.02702
Israel J. Math. 222(1), 2017, 261–278; arXiv:1511.02702
lattice point inequalities for centered convex bodies
jointly with Sören Lennart Berg
SIAM J Discrete Math 30(2), 2016, 1148–1158; arXiv:1505.06444
SIAM J Discrete Math 30(2), 2016, 1148–1158; arXiv:1505.06444
cone-volume measure of general centered convex bodies
jointly with Károly J. Böröczky
Adv. Math., 286, 2016, 703-721.
Adv. Math., 286, 2016, 703-721.
note on adelic triangulations and an adelic blichfeldt-type inequality
jointly with Carsten Thiel
Beiträge Algebra Geom., 57, 2016, 37–49; arXiv:1405.5798
Beiträge Algebra Geom., 57, 2016, 37–49; arXiv:1405.5798
on extensions of minkowski's theorem on successive minima
jointly with Matthias Henze and Maria Hernandez Cifre
Forum Math., 28(2), 2016, 311-326; arXiv:1405.4993
Forum Math., 28(2), 2016, 311-326; arXiv:1405.4993
note on the coefficients of rational
ehrhart quasi-polynomials of minkowski sums
jointly with Eva Linke
Online J. Anal. Comb. (10), 2015; pdf
Online J. Anal. Comb. (10), 2015; pdf
cone-volume measures of polytopes
jointly with Eva Linke
Adv. Math., 253, 2014, 50-62; arXiv:1305.5335
Adv. Math., 253, 2014, 50-62; arXiv:1305.5335
restricted successive minima
jointly with Carsten Thiel
Pacific J. Math., 269(2), 2014, 341-354; arXiv:1302.1407v2
Pacific J. Math., 269(2), 2014, 341-354; arXiv:1302.1407v2
integer points in knapsack polytopes and s-covering radius
jointly with Iskander Aliev and Eva Linke
The Electronic Journal of Combinatorics, 20(2) (2013), #P42, arXiv:1211.3269
The Electronic Journal of Combinatorics, 20(2) (2013), #P42, arXiv:1211.3269
löwner-john ellipsoids
Doc. Math., Extra Volume ISMP (2012) 95-106;
peprint uni magdeburg
steiner polynomials via ultra-logconcave sequences
jointly with Maria A. Hernandez Cifre and Eugenia Saorin
Commun. Contemp. Math. 14(6), 2012, arXiv:1112.4741v1
Commun. Contemp. Math. 14(6), 2012, arXiv:1112.4741v1
lll-reduction for integer knapsacks
jointly with Iskander Aliev
J. Comb. Optim. 24(4), 2012, 613-626; arxiv:1012.3182
J. Comb. Optim. 24(4), 2012, 613-626; arxiv:1012.3182
blichfeldt-type inequalities and central symmetry
jointly with Matthias Henze and Jörg M. Wills
Adv. Geom. 11(4), 2011, 731-744; preprint uni magdeburg
Adv. Geom. 11(4), 2011, 731-744; preprint uni magdeburg
generalized frobenius numbers: bounds and average behavior
jointly with Iskander Aliev and Lenny Fukshansky
Acta Arith. 155, (2012), 53-62; arxiv:1105.0841
Acta Arith. 155, (2012), 53-62; arxiv:1105.0841
notes on lattice points of zonotopes and lattice-face polytopes
jointly with Christian Bey, Matthias Henze and Eva Linke
Discrete Math. 311, 2011, 634-644; arxiv:1006.5574v2
Discrete Math. 311, 2011, 634-644; arxiv:1006.5574v2
on the location of roots of steiner polynomials
jointly with Maria A. Hernandez Cifre
Bull. Braz. Math. Soc., New Series 42 (1), 2011, 153-170, preprint uni magdeburg
Bull. Braz. Math. Soc., New Series 42 (1), 2011, 153-170, preprint uni magdeburg
representing simple d-dimensional polytopes by d polynomials
jointly with Gennadiy Averkov
Math. Prog. (A), 126(2), 2011, 203-230; arXiv:0709.2099v1
Math. Prog. (A), 126(2), 2011, 203-230; arXiv:0709.2099v1
feasability of integer knapsacks
jointly with Iskander Aliev
SIAM Journal on Optimization 20 (2010), issue 6, 2978-2993; pdf
SIAM Journal on Optimization 20 (2010), issue 6, 2978-2993; pdf
minimal zonotopes containing the crosspolytope
jointly with Eva Linke and Jörg M. Wills
Linear Algebra and its Applications 432 (2010), 2942-2952; preprint 2009/41 uni magdeburg
Linear Algebra and its Applications 432 (2010), 2942-2952; preprint 2009/41 uni magdeburg
expected frobenius numbers
jointly with Iskander Aliev and Aicke Hinrichs
Journal of Combinatorial Theory, Series A, 118 (2011), 525 - 531; arxiv:0910.02620
Journal of Combinatorial Theory, Series A, 118 (2011), 525 - 531; arxiv:0910.02620
coverings and compressed lattices
jointly with Maria A. Hernandez Cifre
Symmetry: Culture and Science, 22 (3-4), 2011, 307-316; preprint 2009/39 uni magdeburg
Symmetry: Culture and Science, 22 (3-4), 2011, 307-316; preprint 2009/39 uni magdeburg
integer knapsacks: average behavior of the frobenius numbers
jointly with Iskander Aliev
Mathematics of Operations Research, 34(3), 2009, 698-705; arxiv:0810.0234v1
Mathematics of Operations Research, 34(3), 2009, 698-705; arxiv:0810.0234v1
three-dimensional polyhedra can be described by three polynomial inequalities
jointly with Gennadiy Averkov
Discrete Comput. Geom.,42(2), 2009, 166-186; arXiv:0807.2137
Discrete Comput. Geom.,42(2), 2009, 166-186; arXiv:0807.2137
successive minima and radii
jointly with Maria A. Hernandez Cifre
Canad. Math. Bull., 52(3), 2009, 380-388; preprint 02/2008 uni magdeburg
Canad. Math. Bull., 52(3), 2009, 380-388; preprint 02/2008 uni magdeburg
lower bounds on the coefficients of ehrhart polynomials
jointly with Makoto Tagami
European J. Combinat., 30, 2009, 70-83; arXiv:0710.2665v1
European J. Combinat., 30, 2009, 70-83; arXiv:0710.2665v1
intrinsic volumes and successive radii
jointly with Maria A. Hernandez Cifre
J. Math. Anal. Appl., 343(2), 2008, 733-742; preprint 29/2007 uni magdeburg
J. Math. Anal. Appl., 343(2), 2008, 733-742; preprint 29/2007 uni magdeburg
a blichfeldt-type inequality for the surface area
jointly with Jörg M. Wills
Mh. Math.,154, 2008, 135-144; arXiv:0705.2088v1
Mh. Math.,154, 2008, 135-144; arXiv:0705.2088v1
notes on the roots of steiner polynomials
jointly with Maria A. Hernandez Cifre
Rev. Mat. Iberoamericana, 24 (2), 2008, 631-644; arXiv:math.MG/0703373
Rev. Mat. Iberoamericana, 24 (2), 2008, 631-644; arXiv:math.MG/0703373
polynomdarstellungen von polyedern (german)
Jahresberichte der DMV, 109, 2007, 51-69;
preprint 58/2006 uni magdeburg
notes on the roots of ehrhart polynomials
jointly with Christian Bey and Jörg M. Wills
Discrete Comput. Geom., 38 (1), 2007, 81-98; arXiv:math.MG/0606089
Discrete Comput. Geom., 38 (1), 2007, 81-98; arXiv:math.MG/0606089
minkowski's successive minima
jointly with Jörg M. Wills
Proceedings of ''The International Conference on Number Theory and Discrete Geometry'', Chandigarh, 2005; Editors: R. Balasubramanian, S.G. Dani, P.M. Gruber, R.J. Hans-Gill; Ramanujan Mathematical Society, 2008, 129-142; preprint 09/2006 uni magdeburg
Proceedings of ''The International Conference on Number Theory and Discrete Geometry'', Chandigarh, 2005; Editors: R. Balasubramanian, S.G. Dani, P.M. Gruber, R.J. Hans-Gill; Ramanujan Mathematical Society, 2008, 129-142; preprint 09/2006 uni magdeburg
on the existence of crepant resolutions of gorenstein abelian quotient singularities in dimensions >= 4
jointly with Dimitrios I. Dais and Günter M. Ziegler
Algebraic and Geometric Combinatorics (Athanasiadis et al., eds.), Contemp. Math. (AMS), 423, 2007, 125-193; arXiv:math.AG/0512619
Algebraic and Geometric Combinatorics (Athanasiadis et al., eds.), Contemp. Math. (AMS), 423, 2007, 125-193; arXiv:math.AG/0512619
lattice point coverings
jointly with George Tsintsifas
Chinese Advances in Mathematics, 36 (4), 2007, 441-446. preprint 29/2005 uni magdeburg
Chinese Advances in Mathematics, 36 (4), 2007, 441-446. preprint 29/2005 uni magdeburg
successive minima and best simultaneous diophantine approximations
jointly with Iskander Aliev
Mh. Math., 147 (2), 2006, 95-101; arXiv:math.NT/0503365
Mh. Math., 147 (2), 2006, 95-101; arXiv:math.NT/0503365
ehrhart polynomials and successive minima
jointly with Achill Schürmann and Jörg M. Wills
Mathematika, 52 (103/104), 2006, 1-16; arXiv:math.AG/0507528
Mathematika, 52 (103/104), 2006, 1-16; arXiv:math.AG/0507528
polynomial inequalities representing polyhedra
jointly with Hartwig Bosse and Martin Grötschel
Math. Prog. (A), 103:1, 2005, 35-44; arXiv:math.MG/0307190
Math. Prog. (A), 103:1, 2005, 35-44; arXiv:math.MG/0307190
free planes in lattice sphere packings
Adv. Geom. 5, 2005, 137-144;
arXiv:math.MG/0308098
on the equations defining toric l.c.i. singularities
jointly with Dimitrios I. Dais
Trans. Amer. Math. 535 (12), 2003, 4955 - 4984; arXiv:math.AG/0204172
Trans. Amer. Math. 535 (12), 2003, 4955 - 4984; arXiv:math.AG/0204172
on the representation of polyhedra by polynomial inequalities
jointly with Martin Grötschel
Discrete Comput. Geom. 29 (4), 2003, 485 - 504; arXiv:math.MG/0203268
Discrete Comput. Geom. 29 (4), 2003, 485 - 504; arXiv:math.MG/0203268
integral decomposition of polyhedra and some applications
in mixed integer programming
jointly with Matthias Köppe and Robert Weismantel
Math. Prog. (B). 94, 2003, 193-206; preprint 12/2000 uni magdeburg
Math. Prog. (B). 94, 2003, 193-206; preprint 12/2000 uni magdeburg
successive minima and lattice points
Rendi. Circ. Matematico Palermo, Serie II, Supppl. 70,
2002, 377-384;
arXiv:math.MG/0204158
diophantine approximations and integer points of cones
jointly with Robert Weismantel
Combinatorica, 22 (3), 2002, 401 - 408; preprint 29/97 zuse zentrum berlin
Combinatorica, 22 (3), 2002, 401 - 408; preprint 29/97 zuse zentrum berlin
on free planes in lattice ball packings
jointly with Günter M. Ziegler and Chuanming Zong
London Math. Soc. 34, no. 3, 2002, 284-290; preprint 04/2000 uni magdeburg
London Math. Soc. 34, no. 3, 2002, 284-290; preprint 04/2000 uni magdeburg
die starke-perfekte-graphen-vermutung (german)
jointly with Annegret Wagler
DMV-Mitteilungen3, 2002, 22-25; preprint
DMV-Mitteilungen3, 2002, 22-25; preprint
segments in ball packings
jointly with Chuanming Zong
Mathematika 47, 2000, 31-38; preprint 30/1999 uni magdeburg
Mathematika 47, 2000, 31-38; preprint 30/1999 uni magdeburg
densest lattice packings of 3-polytopes
jointly with Ulrich Betke
Computational Geometry 16, no. 3, 2000, 157-186; arXiv:math.MG/9909172
Computational Geometry 16, no. 3, 2000, 157-186; arXiv:math.MG/9909172
on minimal solutions of linear diophantine equations
jointly with Robert Weismantel
Contrib. Algebra and Geometry 41, (1), 2000, 49-55; preprint 02/1999 uni magdeburg
Contrib. Algebra and Geometry 41, (1), 2000, 49-55; preprint 02/1999 uni magdeburg
kugeln im computer - die kepler vermutung (german)
jointly with Günter M. Ziegler
in Alles Mathematik!, M. Aigner and E. Behrends eds., 2nd ed., Vieweg, 2002; preprint
in Alles Mathematik!, M. Aigner and E. Behrends eds., 2nd ed., Vieweg, 2002; preprint
la congettura di keplero (italian) in Problemi e teoremi, volume II, C. Bartocci and P. Odifreddi, Eiaudi, Torino, 2008;
spheres in the computer -- the
kepler conjecture (english)
in Mathematics Everywhere, M. Aigner and
E. Behrends eds., AMS, 2010
a counterexample to an integer analogue of carathéodory's
theorem
jointly with Winfried Bruns, Joseph Gubeladze, Alexander Martin and Robert Weismantel
J. Reine Angew. Math. 510, 1999, 179-185; preprint sc 98-28 zib
J. Reine Angew. Math. 510, 1999, 179-185; preprint sc 98-28 zib
random projections of regular polytopes
jointly with Károly Böröczky, Jr.
Arch. Math. 73, 1999, 465-473; preprint sc 97-21 zib
Arch. Math. 73, 1999, 465-473; preprint sc 97-21 zib
macht es der computer möglich? (german)
DMV-Mitteilungen 4, 1998, 58-60; preprint
all abelian quotient c.i.-singularities admit
projective crepant resolutions in all dimensions
jointly with Dimitrios I. Dais and Günter M. Ziegler
Advances in Mathematics 139, 1998, 194-239; arXiv:alg-geom/9704007
Advances in Mathematics 139, 1998, 194-239; arXiv:alg-geom/9704007
on crepant resolutions of 2-parameter series of gorenstein cyclic quotient singularities
jointly with Dimitrios I. Dais and Utz-Uwe Haus
Results in Mathematics 33, No. 3/4, 1998, 208-266; arXiv:math.AG/9803096
Results in Mathematics 33, No. 3/4, 1998, 208-266; arXiv:math.AG/9803096
randomized simplex algorithms on klee-minty cubes
jointly with Bernd Gärtner and Günter M. Ziegler;
Combinatorica 18 (3), 1998, 349-372; preprint
Combinatorica 18 (3), 1998, 349-372; preprint
finite packings of spheres
jointly with Ulrich Betke
Discrete Comput. Geom. 19, 1998 , 197-227; preprint 465-1995 tu berlin
Discrete Comput. Geom. 19, 1998 , 197-227; preprint 465-1995 tu berlin
note on lattice-point-free convex bodies
jointly with Poh Wah Awyong and Paul R. Scott
Mh. Math. 126, 1998, 7-12; preprint sc-96-44 zib
Mh. Math. 126, 1998, 7-12; preprint sc-96-44 zib
test sets of the knapsack problem and simultaneous diophantine approximatio
jointly with Robert Weismantel
Lecture Notes in Comp. Science 1284, Algorithms -ESA'97, R. Burkard and G. Woeginger eds., Springer, 1997, 271-283; preprint sc-97-13 zib
Lecture Notes in Comp. Science 1284, Algorithms -ESA'97, R. Burkard and G. Woeginger eds., Springer, 1997, 271-283; preprint sc-97-13 zib
the height of minimal hilbert bases
jointly with Robert Weismantel
Results in Mathemtics, 32, 1997, 298-303; preprint
Results in Mathemtics, 32, 1997, 298-303; preprint
note on shortest and nearest lattice vectors
Inform. Process. Lett., 61, 1997, 183-188; preprint 430-1995 tu berlin
inradii of simplices
jointly with Ulrich Betke and Lydia Tsintsifa
Discrete Comput. Geom., 17, 1997, 365-375; preprint
Discrete Comput. Geom., 17, 1997, 365-375; preprint
basic properties of convex polytopes
jointly with Jürgen Richter-Gebert and Günter
M. Ziegler
Discrete and Computational Geometry, J.E. Goodman and J. O'Rourke eds., CRC Press, Boca Raton, Florida, 1997, Second Edition, 2004, 355-383; preprint 473-1995 tu berlin with updates
Discrete and Computational Geometry, J.E. Goodman and J. O'Rourke eds., CRC Press, Boca Raton, Florida, 1997, Second Edition, 2004, 355-383; preprint 473-1995 tu berlin with updates
radii and the sausage conjecture
jointly with Károly Böröczky, Jr.
Canad. Math. Bull. 38(2), 1995, 156-166;
Canad. Math. Bull. 38(2), 1995, 156-166;
finite and infinite packings
Habilitationsschrift, Universität Siegen, 1995; preprint
a new approach to covering
jointly with Ulrich Betke and Jörg M. Wills
Mathematika, 42, 1995, 251-263; preprint 266-1994 uni siegen
Mathematika, 42, 1995, 251-263; preprint 266-1994 uni siegen
sausages are good packings
jointly with Ulrich Betke and Jörg M. Wills
Discrete Comput. Geom., 13, 1995, 297-311;
Discrete Comput. Geom., 13, 1995, 297-311;
finite and infinite packings
jointly with Ulrich Betke and Jörg M. Wills
J. Reine Angew. Math., 453, 1994, 165-191; preprint 262-1993 uni siegen
J. Reine Angew. Math., 453, 1994, 165-191; preprint 262-1993 uni siegen
some inequalities for planar convex figures
jointly with George A. Tsintsifas
El. Math., 49(3), 1994, 120-126; preprint
El. Math., 49(3), 1994, 120-126; preprint
intrinsic volumes and lattice points of
crosspolytopes
jointly with Ulrich Betke
Mh. Math. 115, 1993, 27-33; preprint 1992 uni siegen
Mh. Math. 115, 1993, 27-33; preprint 1992 uni siegen
successive-minima-type inequalities
jointly with Ulrich Betke and Jörg M. Wills
Discrete Comput. Geom., 9, 1993, 165-175; preprint 1992 uni siegen
Discrete Comput. Geom., 9, 1993, 165-175; preprint 1992 uni siegen
a generalization of steinhagen's theorem
jointly with Ulrich Betke
Abh. Math. Sem. Univ. Hamburg, 63, 1993, 165-176; preprint 259-1992 uni siegen
Abh. Math. Sem. Univ. Hamburg, 63, 1993, 165-176; preprint 259-1992 uni siegen
approximating the volume of convex bodies
jointly with Ulrich Betke
Discrete Comput. Geom. 10, 1993, 15-21; preprint uni siegen
Discrete Comput. Geom. 10, 1993, 15-21; preprint uni siegen
a generalization of jung's theorem
Geometriae Dedicata 42, 1992, 235-240; preprint uni siegen
estimating sizes of a convex body by
successive diameters and widths
jointly with Ulrich Betke
Mathematika 39, 1992, 247-257; preprint 251/1991 uni siegen
Mathematika 39, 1992, 247-257; preprint 251/1991 uni siegen
ungleichungen für sukzessive minima und
verallgemeinerte in- und umkugelradien
Dissertation, Universität Siegen, 1991;
preprint
linear programming by minimizing distances
jointly with Ulrich Betke
ZOR-Methods and Models of OR, 35, 1991, 299-307.
ZOR-Methods and Models of OR, 35, 1991, 299-307.
inequalities between successive minima and intrinsic
volumes of a convex body
Mh. Math., 110, 1990, 279-282.
ein polynomialer algorithmus zur lösung von linearen
optimierungsproblemen mit effizientem abbruchkriterium
Diplomarbeit, Universität Siegen, 1988.
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