2

68.18 Heron's Formula from a Pythagoras-Type Theorem

Richard Ehrenborg
Journal:
The Mathematical Gazette
Year:
1984
Language:
english
File:
PDF, 251 KB
english, 1984
4

Parking Cars of Different Sizes

Richard Ehrenborg,, Alex Happ,
Journal:
American Mathematical Monthly
Year:
2016
Language:
english
File:
PDF, 207 KB
english, 2016
5

A Conceptual Proof of Cramer's Rule

Richard Ehrenborg
Journal:
Mathematics Magazine
Year:
2004
Language:
english
File:
PDF, 153 KB
english, 2004
6

Decoding the Hamming Code

Ehrenborg, Richard
Journal:
Math Horizons
Year:
2006
Language:
english
File:
PDF, 341 KB
english, 2006
7

The Hankel Determinant of Exponential Polynomials

Richard Ehrenborg
Journal:
American Mathematical Monthly
Year:
2000
Language:
english
File:
PDF, 380 KB
english, 2000
8

The van der Waerden complex

Ehrenborg, Richard, Govindaiah, Likith, Park, Peter S., Readdy, Margaret
Journal:
Journal of Number Theory
Year:
2017
Language:
english
File:
PDF, 343 KB
english, 2017
9

Hamiltonian Cycles on Archimedean Solids Are Twisting Free

Richard Ehrenborg
Journal:
American Mathematical Monthly
Language:
english
File:
PDF, 217 KB
english
10

On Posets and Hopf Algebras

Richard Ehrenborg
Journal:
Advances in Mathematics
Year:
1996
Language:
english
File:
PDF, 810 KB
english, 1996
12

Decoding the Hamming Code

Richard Ehrenborg
Journal:
Math Horizons
Year:
2006
Language:
english
File:
PDF, 298 KB
english, 2006
13

The Toric h-Vectors of Partially Ordered Sets

Margaret M. Bayer and Richard Ehrenborg
Journal:
Transactions of the American Mathematical Society
Year:
2000
Language:
english
File:
PDF, 1.75 MB
english, 2000
16

k-Eulerian Posets

Richard Ehrenborg
Journal:
Order
Year:
2001
Language:
english
File:
PDF, 97 KB
english, 2001
19

Maximizing the descent statistic

Richard Ehrenborg, Swapneel Mahajan
Journal:
Annals of Combinatorics
Year:
1998
Language:
english
File:
PDF, 1.17 MB
english, 1998
20

Euler flag enumeration of Whitney stratified spaces

Ehrenborg, Richard, Goresky, Mark, Readdy, Margaret
Journal:
Advances in Mathematics
Year:
2015
Language:
english
File:
PDF, 764 KB
english, 2015
21

A Geometric Approach to Acyclic Orientations

Richard Ehrenborg, Michael Slone
Journal:
Order
Year:
2009
Language:
english
File:
PDF, 263 KB
english, 2009
22

The Hankel Determinant of Exponential Polynomials

Ehrenborg, Richard
Journal:
American Mathematical Monthly
Year:
2000
Language:
english
File:
PDF, 438 KB
english, 2000
23

On Apolarity and Generic Canonical Forms

Richard Ehrenborg
Journal:
Journal of Algebra
Year:
1999
Language:
english
File:
PDF, 175 KB
english, 1999
24

Leaves of Ordered Trees: 10753

Louis Shapiro, Richard Ehrenborg, John W. Moon and Michael Reid
Journal:
American Mathematical Monthly
Year:
2001
Language:
english
File:
PDF, 155 KB
english, 2001
26

Goes Back to Boole: 11234

Jim Brennan, Richard Ehrenborg and Eugene A. Herman
Journal:
American Mathematical Monthly
Year:
2008
Language:
english
File:
PDF, 269 KB
english, 2008
27

Canonical Forms of Two by Two by Two Matrices

Richard Ehrenborg
Journal:
Journal of Algebra
Year:
1999
Language:
english
File:
PDF, 179 KB
english, 1999
28

11234

Jim Brennan and Richard Ehrenborg
Journal:
American Mathematical Monthly
Year:
2006
Language:
english
File:
PDF, 151 KB
english, 2006
29

A Conceptual Proof of Cramer's Rule

Ehrenborg, Richard
Journal:
Mathematics Magazine
Year:
2004
File:
PDF, 264 KB
2004
30

The blind bartender's problem

Richard Ehrenborg, Chris M Skinner
Journal:
Journal of Combinatorial Theory, Series A
Year:
1995
Language:
english
File:
PDF, 794 KB
english, 1995
31

On the Non-existence of anR-labeling

Richard Ehrenborg, Margaret Readdy
Journal:
Order
Year:
2011
Language:
english
File:
PDF, 225 KB
english, 2011
32

11099

Matthias Beck, Richard Ehrenborg and Thomas Zaslavsky
Journal:
American Mathematical Monthly
Year:
2004
Language:
english
File:
PDF, 200 KB
english, 2004
33

Lifting inequalities for polytopes

Richard Ehrenborg
Journal:
Advances in Mathematics
Year:
2005
Language:
english
File:
PDF, 252 KB
english, 2005
34

A Probabilistic Approach to the Descent Statistic

Richard Ehrenborg, Michael Levin, Margaret A. Readdy
Journal:
Journal of Combinatorial Theory, Series A
Year:
2002
Language:
english
File:
PDF, 117 KB
english, 2002
35

Coproducts and the cd-Index

Richard Ehrenborg, Margaret Readdy
Journal:
Journal of Algebraic Combinatorics
Year:
1998
Language:
english
File:
PDF, 192 KB
english, 1998
36

The Frobenius Complex

Eric Clark, Richard Ehrenborg
Journal:
Annals of Combinatorics
Year:
2012
Language:
english
File:
PDF, 325 KB
english, 2012
37

Level Eulerian Posets

Richard Ehrenborg, Gábor Hetyei, Margaret Readdy
Journal:
Graphs and Combinatorics
Year:
2013
Language:
english
File:
PDF, 317 KB
english, 2013
38

Homology of Newtonian Coalgebras

Richard Ehrenborg, Margaret Readdy
Journal:
European Journal of Combinatorics
Year:
2002
Language:
english
File:
PDF, 195 KB
english, 2002
39

Schröder parenthesizations and chordates

Richard Ehrenborg, Miguel Mendez
Journal:
Journal of Combinatorial Theory, Series A
Year:
1994
Language:
english
File:
PDF, 493 KB
english, 1994
40

Juggling and applications to q-analogues

Richard Ehrenborg, Margaret Readdy
Journal:
Discrete Mathematics
Year:
1996
Language:
english
File:
PDF, 1.47 MB
english, 1996
41

A poset view of the major index

Ehrenborg, Richard, Readdy, Margaret
Journal:
Advances in Applied Mathematics
Year:
2015
Language:
english
File:
PDF, 357 KB
english, 2015
42

Filters in the partition lattice

Ehrenborg, Richard, Hedmark, Dustin
Journal:
Journal of Algebraic Combinatorics
Year:
2017
Language:
english
File:
PDF, 768 KB
english, 2017
43

The Asymptotics of Almost Alternating Permutations

Richard Ehrenborg
Journal:
Advances in Applied Mathematics
Year:
2002
Language:
english
File:
PDF, 144 KB
english, 2002
45

The r-cubical Lattice and a Generalization of the cd-index

Richard Ehrenborg, Margaret Readdy
Journal:
European Journal of Combinatorics
Year:
1996
Language:
english
File:
PDF, 390 KB
english, 1996
47

Non-constructible Complexes and the Bridge Index

Richard Ehrenborg, Masahiro Hachimori
Journal:
European Journal of Combinatorics
Year:
2001
Language:
english
File:
PDF, 210 KB
english, 2001
48

Yet Another Triangle for the Genocchi Numbers

Richard Ehrenborg, Einar Steingrı&amp, #x0301, msson
Journal:
European Journal of Combinatorics
Year:
2000
Language:
english
File:
PDF, 95 KB
english, 2000
49

Enumerative Properties of Ferrers Graphs

Richard Ehrenborg, Stephanie van Willigenburg
Journal:
Discrete & Computational Geometry
Year:
2004
Language:
english
File:
PDF, 158 KB
english, 2004
50

The Tchebyshev Transforms of the First and Second Kind

Richard Ehrenborg, Margaret Readdy
Journal:
Annals of Combinatorics
Year:
2010
Language:
english
File:
PDF, 425 KB
english, 2010