Open Problem Garden
Help
About
Contact
login/create account
Home
»
configure
Robert Samal
view
track
contact
Type
Post
Author
Replies
Last post
Open problem
Chords of longest cycles
mdevos
1
48 weeks 1 day ago
Open problem
Do any three longest paths in a connected graph have a vertex in common?
fhavet
1
48 weeks 1 day ago
Open problem
r-regular graphs are not uniquely hamiltonian.
Robert Samal
3
2 years 12 weeks ago
Open problem
Graceful Tree Conjecture
kintali
13
3 years 41 weeks ago
Open problem
Hedetniemi's Conjecture
mdevos
5
4 years 28 weeks ago
Open problem
Steinberg's conjecture
fhavet
1
8 years 4 days ago
forum topic
Give us your suggestions!
md
17
11 years 46 weeks ago
Open problem
Cores of Cayley graphs
Robert Samal
3
12 years 28 weeks ago
Open problem
Star height problem
porton
1
12 years 37 weeks ago
forum topic
Question about 'solving' something
niekeaerts
3
12 years 42 weeks ago
Open problem
Strong 5-cycle double cover conjecture
arthur
8
12 years 42 weeks ago
Open problem
Petersen coloring conjecture
mdevos
2
12 years 42 weeks ago
Open problem
Characterizing (aleph_0,aleph_1)-graphs
mdevos
2
12 years 42 weeks ago
Open problem
Barnette's Conjecture
Robert Samal
1
13 years 5 weeks ago
Open problem
Hirsch Conjecture
Robert Samal
4
13 years 10 weeks ago
Open problem
Complexity of square-root sum
abie
5
13 years 11 weeks ago
Open problem
Seymour's Second Neighbourhood Conjecture
nkorppi
5
13 years 26 weeks ago
Open problem
Real roots of the flow polynomial
mdevos
2
13 years 39 weeks ago
Open problem
Star chromatic index of complete graphs
Robert Samal
0
13 years 43 weeks ago
category
star coloring
Robert Samal
0
13 years 43 weeks ago
category
edge coloring
Robert Samal
0
13 years 43 weeks ago
category
Dvorak, Zdenek
Robert Samal
0
13 years 43 weeks ago
Open problem
Star chromatic index of cubic graphs
Robert Samal
0
13 years 43 weeks ago
Open problem
Co-separability of filter objects
porton
6
14 years 1 week ago
forum topic
Maintaining questions in a subject area
rybu
4
14 years 1 week ago
1
2
3
4
5
next ›
last »
Navigate
Subject
Algebra
(295)
Analysis
(5)
Combinatorics
(35)
Geometry
(29)
Graph Theory
(228)
Group Theory
(5)
Logic
(10)
Number Theory
(49)
PDEs
(0)
Probability
(1)
Theoretical Comp. Sci.
(13)
Topology
(40)
Unsorted
(1)
Author index
Keyword index
more
Recent Activity
Nowhere-zero flows
Shuffle-Exchange Conjecture
Algebra
Seagull problem
Solution to the Lonely Runner Conjecture
more