I. Heckenberger

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All published works

Action	Title	Year	Authors
+ PDF Chat	Pointed Hopf algebras of odd dimension and Nichols algebras over solvable groups	2024	Nicolás Andruskiewitsch I. Heckenberger L. Vendramin
+	Mini-Workshop: Bridging Number Theory and Nichols Algebras via Deformations	2024	Giovanna Carnovale I. Heckenberger L. Vendramin
+ PDF Chat	Bosonization of curved Lie bialgebras	2023	I. Heckenberger L. Vendramin
+ PDF Chat	A characterization of Nichols algebras of diagonal type which are free algebras	2023	I. Heckenberger Ying Zheng
+ PDF Chat	A decomposition Theorem for pointed braided Hopf algebras	2023	I. Heckenberger Katharina Schäfer
+	Left coideal subalgebras of Nichols algebras	2023	I. Heckenberger Katharina Schäfer
+ PDF Chat	Corrigendum: Liftings of Jordan and Super Jordan Planes	2022	Nicolás Andruskiewitsch Iván Angiono I. Heckenberger
+	Corrigendum: Liftings of the Jordan plane	2022	Nicolás Andruskiewitsch Iván Angiono I. Heckenberger
+	A decomposition Theorem for pointed braided Hopf algebras	2022	I. Heckenberger Katharina Schäfer
+	On finite GK-dimensional Nichols algebras over abelian groups	2021	Nicolás Andruskiewitsch Iván Angiono I. Heckenberger
+	Examples of Finite-Dimensional Pointed Hopf Algebras in Positive Characteristic	2021	Nicolás Andruskiewitsch Iván Angiono I. Heckenberger
+ PDF Chat	Two-cocycles and cleft extensions in left braided categories	2020	I. Heckenberger Kevin Wolf
+ PDF Chat	Nichols algebras of diagonal type	2020	I. Heckenberger Hans-JÃ ⁄ rgen Schneider
+	Hopf Algebras and Root Systems	2020	I. Heckenberger Hans‐Jürgen Schneider
+ PDF Chat	Nichols algebras	2020	I. Heckenberger Hans-JÃ ⁄ rgen Schneider
+	Yetter-Drinfeld modules over Hopf algebras	2020	I. Heckenberger Hans-JÃ ⁄ rgen Schneider
+ PDF Chat	Nichols algebras of Cartan type	2020	I. Heckenberger Hans-JÃ ⁄ rgen Schneider
+	Nichols systems, and semi-Cartan graph of Nichols algebras	2020	I. Heckenberger Hans-JÃ ⁄ rgen Schneider
+	A braided monoidal isomorphism of Yetter-Drinfeld modules	2020	I. Heckenberger Hans-JÃ ⁄ rgen Schneider
+	Cartan graphs and Weyl groupoids	2020	I. Heckenberger Hans-JÃ ⁄ rgen Schneider
+ PDF Chat	Basic Hopf algebra theory	2020	I. Heckenberger Hans-JÃ ⁄ rgen Schneider
+	Nichols algebras over non-abelian groups	2020	I. Heckenberger Hans-JÃ ⁄ rgen Schneider
+	Right coideal subalgebras of Nichols systems, and Cartan graph of Nichols algebras	2020	I. Heckenberger Hans-JÃ ⁄ rgen Schneider
+	Quantized enveloping algebras and generalizations	2020	I. Heckenberger Hans-JÃ ⁄ rgen Schneider
+	Cartan graphs of Lie superalgebras	2020	I. Heckenberger Hans-JÃ ⁄ rgen Schneider
+ PDF Chat	Braided monoidal categories	2020	I. Heckenberger Hans-JÃ ⁄ rgen Schneider
+	A quick introduction to Nichols algebras	2020	I. Heckenberger Hans-JÃ ⁄ rgen Schneider
+ PDF Chat	On Nichols algebras of infinite rank with finite Gelfand–Kirillov dimension	2020	Nicolás Andruskiewitsch Iván Angiono I. Heckenberger
+	On the representation theory of non-semisimple (graded) deformed Fomin-Kirillov algebras	2020	A. Alia I. Heckenberger
+	Two-cocycles and cleft extensions in left braided categories	2019	I. Heckenberger Kevin Wolf
+	Examples of finite-dimensional pointed Hopf algebras in positive characteristic	2019	Nicolás Andruskiewitsch Iván Angiono I. Heckenberger
+	A Pascal-like bound for the number of necklaces with fixed density	2019	I. Heckenberger Joe Sawada
+ PDF Chat	On finite GK-dimensional Nichols algebras of diagonal type	2019	Nicolás Andruskiewitsch Iván Angiono I. Heckenberger
+	Two-cocycles and cleft extensions in left braided categories	2019	I. Heckenberger K. L. Wolf
+	Examples of finite-dimensional pointed Hopf algebras in positive characteristic	2019	Nicolás Andruskiewitsch Iván Angiono I. Heckenberger
+ PDF Chat	PBW Deformations of a Fomin–Kirillov Algebra and Other Examples	2018	I. Heckenberger L. Vendramin
+	On the lattice of subracks of the rack of a finite group	2018	I. Heckenberger John Shareshian Volkmar Welker
+	On Nichols algebras of infinite rank with finite Gelfand-Kirillov dimension	2018	Nicolás Andruskiewitsch Iván Angiono I. Heckenberger
+ PDF Chat	Liftings of Jordan and Super Jordan Planes	2018	Nicolás Andruskiewitsch Iván Angiono I. Heckenberger
+	A Pascal-like Bound for the Number of Necklaces with Fixed Density	2018	I. Heckenberger Joe Sawada
+	On finite GK-dimensional Nichols algebras of diagonal type	2018	Nicolás Andruskiewitsch Iván Angiono I. Heckenberger
+	On Nichols algebras of infinite rank with finite Gelfand-Kirillov dimension	2018	Nicolás Andruskiewitsch Iván Angiono I. Heckenberger
+	Root multiplicities for Nichols algebras of diagonal type of rank two	2017	I. Heckenberger Ying Zheng
+ PDF Chat	The classification of Nichols algebras over groups with finite root system of rank two	2017	I. Heckenberger L. Vendramin
+ PDF Chat	A classification of Nichols algebras of semisimple Yetter–Drinfeld modules over non-abelian groups	2017	I. Heckenberger L. Vendramin
+	Root multiplicities for Nichols algebras of diagonal type of rank two	2017	I. Heckenberger Ying Zheng
+ PDF Chat	A Deformation of the Orlik-Solomon Algebra	2016	I. Heckenberger Volkmar Welker
+	On finite GK-dimensional Nichols algebras over abelian groups	2016	Nicolás Andruskiewitsch Iván Angiono I. Heckenberger
+	On finite GK-dimensional Nichols algebras over abelian groups	2016	Nicolás Andruskiewitsch Iván Angiono I. Heckenberger
+	Liftings of Jordan and super Jordan planes	2015	Nicolás Andruskiewitsch Iván Angiono I. Heckenberger
+	On the lattice of subracks of the rack of a finite group	2015	I. Heckenberger John Shareshian Volkmar Welker
+	Mini-Workshop: Coideal Subalgebras of Quantum Groups	2015	I. Heckenberger Stefan Kolb Jasper V. Stokman
+ PDF Chat	Nichols algebras with many cubic relations	2015	I. Heckenberger Andreas Lochmann L. Vendramin
+	On the lattice of subracks of the rack of a finite group	2015	I. Heckenberger John Shareshian Volkmar Welker
+	Liftings of Jordan and super Jordan planes	2015	Nicolás Andruskiewitsch Iván Angiono I. Heckenberger
+	Nichols algebras over groups with finite root system of rank two III	2014	I. Heckenberger L. Vendramin
+ PDF Chat	Erratum to the Article “On the Left and Right Brylinski-Kostant filtrations”	2014	I. Heckenberger Anjali Joseph
+ PDF Chat	Nichols algebras over groups with finite root system of rank two II	2014	I. Heckenberger L. Vendramin
+	The classification of Nichols algebras with finite root system of rank two	2013	I. Heckenberger L. Vendramin
+	New examples of Nichols algebras with finite root system of rank two	2013	I. Heckenberger L. Vendramin
+ PDF Chat	Mini-Workshop: Nichols Algebras and Weyl Groupoids	2013	Nicolás Andruskiewitsch Michael Cuntz I. Heckenberger Sarah Witherspoon
+	Yetter–Drinfeld modules over bosonizations of dually paired Hopf algebras	2013	I. Heckenberger Holger Schneider
+	Finite Weyl groupoids	2013	Michael Cuntz I. Heckenberger
+ PDF Chat	Right coideal subalgebras of Nichols algebras and the Duflo order on the Weyl groupoid	2013	I. Heckenberger Hans‐Jürgen Schneider
+ PDF Chat	Homogeneous right coideal subalgebras of quantized enveloping algebras	2012	I. Heckenberger Stefan Kolb
+ PDF Chat	Braided racks, Hurwitz actions and Nichols algebras with many cubic relations	2012	I. Heckenberger Andreas Lochmann L. Vendramin
+	A deformation of the Orlik-Solomon algebra	2011	I. Heckenberger Volkmar Welker
+ PDF Chat	Finite Weyl groupoids of rank three	2011	Michael Cuntz I. Heckenberger
+	Nichols algebras of group type with many quadratic relations	2011	M. Graña I. Heckenberger L. Vendramin
+	Reflection groupoids of rank two and cluster algebras of type A	2011	Michael Cuntz I. Heckenberger
+	Yetter-Drinfeld modules over bosonizations of dually paired Hopf algebras	2011	I. Heckenberger Henriette Schneider
+	A deformation of the Orlik-Solomon algebra	2011	I. Heckenberger Volkmar Welker
+ PDF Chat	Geometric combinatorics of Weyl groupoids	2010	I. Heckenberger Volkmar Welker
+	Finite Weyl groupoids	2010	Michael Cuntz I. Heckenberger
+	Nichols algebras over groups with finite root system of rank two I	2010	I. Heckenberger L. Vendramin
+ PDF Chat	Right Coideal Subalgebras of the Borel Part of a Quantized Enveloping Algebra	2010	I. Heckenberger Stefan Kolb
+	Geometric Combinatorics of Weyl Groupoids	2010	I. Heckenberger Volkmar Welker
+	Lusztig isomorphisms for Drinfel'd doubles of bosonizations of Nichols algebras of diagonal type	2010	I. Heckenberger
+	Root systems and Weyl groupoids for Nichols algebras	2010	I. Heckenberger Hans Schneider
+	Drinfel'd doubles and Shapovalov determinants	2010	I. Heckenberger Hiroyuki Yamane
+	Geometric Combinatorics of Weyl Groupoids	2010	I. Heckenberger Volkmar Welker
+	Finite Weyl groupoids	2010	Michael Cuntz I. Heckenberger
+ PDF Chat	Weyl groupoids of rank two and continued fractions	2009	Michael Cuntz I. Heckenberger
+	On the Left and Right Brylinski-Kostant Filtrations	2009	I. Heckenberger Anthony Joseph
+	Finite Weyl groupoids of rank three	2009	Michael Cuntz I. Heckenberger
+	Right coideal subalgebras of Nichols algebras and the Duflo order on the Weyl groupoid	2009	I. Heckenberger Henriette Schneider
+	Right coideal subalgebras of the Borel part of a quantized enveloping algebra	2009	I. Heckenberger Stefan Kolb
+	Reflection groupoids of rank two and Cluster algebras of type $A$	2009	Michael Cuntz I. Heckenberger
+	Weyl groupoids with at most three objects	2008	Michael Cuntz I. Heckenberger
+ PDF Chat	Classification of arithmetic root systems	2008	I. Heckenberger
+	Drinfeld second realization of the quantum affine superalgebras of $D^{(1)}(2,1;x)$ via the Weyl groupoid (Combinatorial Representation Theory and Related Topics)	2008	I. Heckenberger Fabian Spill Алессандро Торриелли Hiroyuki Yamane
+	Drinfeld second realization of the quantum affine superalgebras of $D^{(1)}(2,1;x)$ via the Weyl groupoid	2008	I. Heckenberger Fabian Spill Алессандро Торриелли Hiroyuki Yamane
+	Weyl groupoids of rank two and continued fractions	2008	Michael Cuntz I. Heckenberger
+	Root systems and Weyl groupoids for Nichols algebras	2008	I. Heckenberger Henriette Schneider
+	Drinfel'd doubles and Shapovalov determinants	2008	I. Heckenberger Hiroyuki Yamane
+	The Nichols algebra of a semisimple Yetter-Drinfeld module	2008	Nicolás Andruskiewitsch I. Heckenberger Henriette Schneider
+	Weyl groupoids with at most three objects	2008	Michael Cuntz I. Heckenberger
+ PDF Chat	On the Bernstein-Gelfand-Gelfand Resolution for Kac-Moody Algebras and Quantized Enveloping Algebras	2007	I. Heckenberger Stefan Kolb
+	Lusztig isomorphisms for Drinfel'd doubles of Nichols algebras of diagonal type	2007	I. Heckenberger
+	Differential forms via the Bernstein–Gelfand–Gelfand resolution for quantized irreducible flag manifolds	2007	I. Heckenberger Stefan Kolb
+ PDF Chat	A generalization of Coxeter groups, root systems, and Matsumoto’s theorem	2007	I. Heckenberger Hiroyuki Yamane
+ PDF Chat	Rank 2 Nichols Algebras with Finite Arithmetic Root System	2007	I. Heckenberger
+	On a factorization of graded Hopf algebras using Lyndon words	2007	M. Graña I. Heckenberger
+ PDF Chat	Examples of finite-dimensional rank 2 Nichols algebras of diagonal type	2007	I. Heckenberger
+	Lusztig isomorphisms for Drinfel'd doubles of bosonizations of Nichols algebras of diagonal type	2007	I. Heckenberger
+	Drinfeld second realization of the quantum affine superalgebras of $D^{(1)}(2,1;x)$ via the Weyl groupoid	2007	I. Heckenberger Fabian Spill Алессандро Торриелли Hiroyuki Yamane
+ PDF Chat	De Rham complex for quantized irreducible flag manifolds	2006	I. Heckenberger Stefan Kolb
+	On the Bernstein-Gelfand-Gelfand resolution for Kac-Moody algebras and quantized enveloping algebras	2006	I. Heckenberger Stefan Kolb
+	Classification of arithmetic root systems	2006	I. Heckenberger
+	On a factorization of graded Hopf algebras using Lyndon words	2006	M. Graña I. Heckenberger
+	A generalization of Coxeter groups, root systems, and Matsumoto's theorem	2006	I. Heckenberger Hiroyuki Yamane
+ PDF Chat	The Weyl groupoid of a Nichols algebra of diagonal type	2005	I. Heckenberger
+	Classification of arithmetic root systems of rank 3	2005	I. Heckenberger
+ PDF Chat	Weyl equivalence for rank 2 Nichols algebras of diagonal type	2005	I. Heckenberger
+ PDF Chat	The locally finite part of the dual coalgebra of quantized irreducible flag manifolds	2004	I. Heckenberger Stefan Kolb
+	Finite dimensional rank 2 Nichols algebras of diagonal type I: Examples	2004	I. Heckenberger
+	Weyl equivalence for rank 2 Nichols algebras of diagonal type	2004	I. Heckenberger
+	Rank 2 Nichols algebras with finite arithmetic root system	2004	I. Heckenberger
+	Podleś' quantum sphere: dual coalgebra and classification of covariant first-order differential calculus	2003	I. Heckenberger Stefan Kolb
+	Spin geometry on quantum groups via covariant differential calculi	2003	I. Heckenberger
+	None	2003	I. Heckenberger Stefan Kolb
+	De Rham Complex for Quantized Irreducible Flag Manifolds	2003	I. Heckenberger Stefan Kolb
+	The Locally Finite Part of the Dual Coalgebra of Quantized Irreducible Flag Manifolds	2003	I. Heckenberger Stefan Kolb
+	Podleś' Quantum Sphere: Dual Coalgebra and Classification of Covariant First Order Differential Calculus	2002	I. Heckenberger Stefan Kolb
+ PDF Chat	De Rham Cohomology and Hodge Decomposition For Quantum Groups	2001	I. Heckenberger Axel Schüler
+	Classification of Left-Covariant Differential Calculi on the Quantum Group SLq(2)	2001	I. Heckenberger
+	None	2001	I. Heckenberger Axel Schüler
+	Differential Calculus on Quantum Complex Grassmann Manifolds II: Classification	2001	I. Heckenberger Stefan Kolb
+	On FRT-Clifford Algebras	2000	I. Heckenberger A. Schueler
+	ON FRT– CLIFFORD ALGEBRAS	2000	I. Heckenberger Axel Schüler
+	Symmetrizer and Antisymmetrizer of the Birman-Wenzl-Murakami Algebras	2000	I. Heckenberger Axel Schüler
+	Spin Geometry on Quantum Groups via Covariant Differential Calculi	2000	I. Heckenberger
+	Classification of Left-Covariant Differential Calculi on the Quantum Group $\SLq 2$	2000	I. Heckenberger
+	De Rham Cohomology and Hodge decomposition for Quantum Groups	2000	I. Heckenberger A. Schueler
+ PDF Chat	None	2000	I. Heckenberger
+	On FRT-Clifford Algebras	2000	I. Heckenberger A. Schueler
+	Hodge and Laplace-Beltrami Operators for Bicovariant Differential Calculi on Quantum Groups	1999	I. Heckenberger
+	None	1999	I. Heckenberger Axel Schüler
+	Classification of bicovariant differential calculi on the quantum groups SLq(n+1) and Spq(2n)	1998	I. Heckenberger Konrad Schmüdgen
+ PDF Chat	Exterior Algebras Related to the Quantum Group O_q(3)$	1998	I. Heckenberger Axel Schüler
+ PDF Chat	Levi-Civita Connections on the Quantum Groups SL q ( N ), O q ( N ) and Sp q ( N )	1997	I. Heckenberger Konrad Schmüdgen
+	None	1997	I. Heckenberger Konrad Schmüdgen
+	Classification of Bicovariant Differential Calculi on the Quantum Groups $SL_q(n+1)$ and $Sp_q(2n)$	1997	I. Heckenberger Konrad Schmuedgen
+ PDF Chat	Higher Order Differential Calculus on $SL_q(N)$	1997	I. Heckenberger Axel Schüler
+	Levi-Civita Connections on the Quantum Groups SL_{q}(N), O_{q}(N) and Sp_{q}(N)	1995	I. Heckenberger Konrad Schmuedgen

Common Coauthors

Coauthor	Papers Together
Nicolás Andruskiewitsch	19
Iván Angiono	16
Stefan Kolb	15
Hans-JÃ ⁄ rgen Schneider	14
L. Vendramin	13
Michael Cuntz	12
Volkmar Welker	9
Axel Schüler	7
Hiroyuki Yamane	7
Henriette Schneider	4
Konrad Schmüdgen	3
Katharina Schäfer	3
Алессандро Торриелли	3
John Shareshian	3
Fabian Spill	3
M. Graña	3
A. Schueler	3
Kevin Wolf	2
Ying Zheng	2
Joe Sawada	2
Konrad Schmuedgen	2
Andreas Lochmann	2
Hans‐Jürgen Schneider	2
K. L. Wolf	1
Ying Zheng	1
L. Vendramin	1
Jasper V. Stokman	1
Anjali Joseph	1
Sarah Witherspoon	1
Holger Schneider	1
A. Alia	1
Anthony Joseph	1
Giovanna Carnovale	1
Hans Schneider	1

Commonly Cited References

Action	Title	Year	Authors	# of times referenced
+ PDF Chat	The Weyl groupoid of a Nichols algebra of diagonal type	2005	I. Heckenberger	43
+	Lifting of Quantum Linear Spaces and Pointed Hopf Algebras of Orderp3	1998	Nicolás Andruskiewitsch Henriette Schneider	33
+ PDF Chat	Differential calculus on compact matrix pseudogroups (quantum groups)	1989	S. L. Woronowicz	28
+	Quantum groups and quantum shuffles	1998	Marc Rosso	21
+	Hopf Algebras and Their Actions on Rings	1993	Susan Montgomery	20
+ PDF Chat	Classification of arithmetic root systems	2008	I. Heckenberger	20
+	Finite Quantum Groups and Cartan Matrices	2000	Nicolás Andruskiewitsch Hans‐Jürgen Schneider	19
+	Introduction to Quantum Groups	2010	G. Lusztig	18
+	Pointed Hopf Algebras	2002	Nicolás Andruskiewitsch Hans‐Jürgen Schneider	17
+ PDF Chat	A generalization of Coxeter groups, root systems, and Matsumoto’s theorem	2007	I. Heckenberger Hiroyuki Yamane	16
+	The Nichols algebra of a semisimple Yetter-Drinfeld module	2010	Nicol�s Andruskiewitsch I. Heckenberger Hans-J�rgen Schneider	15
+ PDF Chat	Infinite-Dimensional Lie Algebras	1990	Victor G. Kač	15
+	Weyl groupoids with at most three objects	2008	Michael Cuntz I. Heckenberger	15
+	Bialgebras of type one<sup>*</sup>	1978	Warren D. Nichols	14
+	From racks to pointed Hopf algebras	2003	Nicolás Andruskiewitsch Matı́as Graña	13
+ PDF Chat	A quantum analog of the Poincare-Birkhoff-Witt theorem	1999	V. K. Kharchenko	13
+	A characterization of the borel-like subalgebras of quantum enveloping algebras	1996	Peter Schauenburg	12
+ PDF Chat	Weyl groupoids of rank two and continued fractions	2009	Michael Cuntz I. Heckenberger	12
+	Quantization of Lie Groups and Lie Algebras	1988	L. D. Faddeev Nicolai Reshetikhin Leon A. Takhtajan	12
+	A Freeness Theorem for Nichols Algebras	2000	Matı́as Graña	12
+	Root systems and Weyl groupoids for Nichols algebras	2010	I. Heckenberger Hans Schneider	11
+	Quantum Groups	1994	Christian Kassel	10
+ PDF Chat	On the classification of finite-dimensional pointed Hopf algebras	2010	Nicolás Andruskiewitsch Hans‐Jürgen Schneider	10
+	Quadratic Algebras, Dunkl Elements, and Schubert Calculus	1999	Sergey Fomin Anatol N. Kirillov	9
+	Quantum homogeneous spaces with faithfully flat module structures	1999	Eric Müller Henriette Schneider	9
+ PDF Chat	On Nichols algebras of diagonal type	2013	Iván Angiono	8
+ PDF Chat	Rank 2 Nichols Algebras with Finite Arithmetic Root System	2007	I. Heckenberger	8
+ PDF Chat	Finite-dimensional pointed Hopf algebras with alternating groups are trivial	2010	Nicolás Andruskiewitsch Fernando Fantino M. Graña L. Vendramin	8
+	Nichols algebras of group type with many quadratic relations	2011	M. Graña I. Heckenberger L. Vendramin	8
+	Nichols–Woronowicz algebra model for Schubert calculus on Coxeter groups	2006	Yuri Bazlov	8
+ PDF Chat	On Nichols Algebras with Generic Braiding	2008	Nicolás Andruskiewitsch Iván Angiono	8
+	Pointed Hopf algebras over the sporadic simple groups	2010	Nicolás Andruskiewitsch Fernando Fantino M. Graña L. Vendramin	8
+	Quantum Groups and Their Primitive Ideals	1995	Anthony Joseph	8
+ PDF Chat	DERIVATIONS WITH QUANTUM GROUP ACTION	2002	Ulrich Hermisson	8
+ PDF Chat	UniversalR-matrix for quantized (super)algebras	1991	S. Khoroshkin V.N. Tolstoy	8
+	The Nichols algebra of a semisimple Yetter-Drinfeld module	2008	Nicolás Andruskiewitsch I. Heckenberger Henriette Schneider	7
+	The algebraic theory of semigroups	1964	A. H. Clifford G. B. Preston	7
+	New Directions in Hopf Algebras	2009	Susan Montgomery Hans‐Jürgen Schneider	7
+	Foundations of Quantum Group Theory	1995	Shahn Majid	7
+ PDF Chat	Right coideal subalgebras of Nichols algebras and the Duflo order on the Weyl groupoid	2013	I. Heckenberger Hans‐Jürgen Schneider	7
+	A presentation by generators and relations of Nichols algebras of diagonal type and convex orders on root systems	2010	Iván Angiono	6
+	PBW bases for a class of braided Hopf algebras	2004	Stefan Ufer	6
+	Differential calculus on quantized simple lie groups	1991	Branislav Jurčo	6
+	None	1998	S. Sinel’shchikov L. Vaksman	6
+	Nichols algebras over groups with finite root system of rank two I	2010	I. Heckenberger L. Vendramin	6
+	On generalizations of root systems	1996	Vera Serganova	6
+	On a factorization of graded Hopf algebras using Lyndon words	2007	M. Graña I. Heckenberger	6
+	Noncommutative Differentials and Yang-Mills on Permutation Groups Sn	2019	Shawn Majid	6
+ PDF Chat	A catalogue of simplicial arrangements in the real projective plane	2009	Branko Grünbaum	6
+ PDF Chat	About finite dimensional Hopf algebras	2002	Nicolás Andruskiewitsch	6