Lorenz Halbeisen

According to our database, Lorenz Halbeisen authored at least 23 papers between 1994 and 2023.

Collaborative distances:

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

2023

The Hidden Twin of Morley's Five Circles Theorem.

Lorenz Halbeisen, Norbert Hungerbühler, Vanessa Loureiro

Am. Math. Mon., November, 2023

Halfway new cardinal characteristics.

Jörg Brendle, Lorenz Halbeisen, Lukas Daniel Klausner, Marc Lischka, Saharon Shelah

Ann. Pure Appl. Log., October, 2023

Some implications of Ramsey Choice for families of $\varvec{n}$-element sets.

Lorenz Halbeisen, Salome Schumacher

Arch. Math. Log., July, 2023

Four cardinals and their relations in ZF.

Lorenz Halbeisen, Riccardo Plati, Salome Schumacher, Saharon Shelah

Ann. Pure Appl. Log., 2023

2020

On Ramsey choice and partial choice for infinite families of n-element sets.

Lorenz Halbeisen, Eleftherios Tachtsis

Arch. Math. Log., 2020

2019

Congruent Number Elliptic Curves Related to Integral Solutions of m2 = n2 + nl + n2.

Lorenz Halbeisen, Norbert Hungerbühler

J. Integer Seq., 2019

2018

A weird relation between two cardinals.

Lorenz Halbeisen

Arch. Math. Log., 2018

2015

A Simple Proof of Poncelet's Theorem (on the Occasion of Its Bicentennial).

Lorenz Halbeisen, Norbert Hungerbühler

Am. Math. Mon., 2015

2004

Fans and Bundles in the Graph of Pairwise Sums and Products.

Lorenz Halbeisen

Electron. J. Comb., 2004

2003

Can Kirkman's Schoolgirls Walk Abreast by Forming Arithmetic Progressions?

Lorenz Halbeisen

Am. Math. Mon., 2003

Making doughnuts of Cohen reals.

Lorenz Halbeisen

Math. Log. Q., 2003

A generalization of the Dual Ellentuck Theorem.

Lorenz Halbeisen, Pierre Matet

Arch. Math. Log., 2003

2002

A Result in Dual Ramsey Theory.

Lorenz Halbeisen, Pierre Matet

J. Comb. Theory, Ser. A, 2002

2001

Relations between some cardinals in the absence of the Axiom of Choice.

Lorenz Halbeisen, Saharon Shelah

Bull. Symb. Log., 2001

2000

On Periodic Billiard Trajectories in Obtuse Triangles.

Lorenz Halbeisen, Norbert Hungerbühler

SIAM Rev., 2000

Reconstruction of Weighted Graphs by their Spectrum.

Lorenz Halbeisen, Norbert Hungerbühler

Eur. J. Comb., 2000

1999

Generation of isospectral graphs.

Lorenz Halbeisen, Norbert Hungerbühler

J. Graph Theory, 1999

1998

On Shattering, Splitting and Reaping Partitions.

Lorenz Halbeisen

Math. Log. Q., 1998

Packings in Complete Graphs.

Lorenz Halbeisen, Norbert Hungerbühler

Ars Comb., 1998

Symmetries between two Ramsey properties.

Lorenz Halbeisen

Arch. Math. Log., 1998

1996

Mathias Absoluteness and the Ramsey Property.

Lorenz Halbeisen, Haim Judah

J. Symb. Log., 1996

1995

The general counterfeit coin problem.

Lorenz Halbeisen, Norbert Hungerbühler

Discret. Math., 1995

1994

Consequences of Arithmetic for Set Theory.

Lorenz Halbeisen, Saharon Shelah

J. Symb. Log., 1994