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Robert Samal
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Post
Author
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Last post
Open problem
Chords of longest cycles
mdevos
1
26 weeks 21 hours ago
Open problem
Do any three longest paths in a connected graph have a vertex in common?
fhavet
1
26 weeks 21 hours ago
Open problem
r-regular graphs are not uniquely hamiltonian.
Robert Samal
3
1 year 42 weeks ago
Open problem
Graceful Tree Conjecture
kintali
13
3 years 19 weeks ago
Open problem
Hedetniemi's Conjecture
mdevos
5
4 years 6 weeks ago
Open problem
Steinberg's conjecture
fhavet
1
7 years 30 weeks ago
forum topic
Give us your suggestions!
md
17
11 years 24 weeks ago
Open problem
Cores of Cayley graphs
Robert Samal
3
12 years 6 weeks ago
Open problem
Star height problem
porton
1
12 years 15 weeks ago
forum topic
Question about 'solving' something
niekeaerts
3
12 years 20 weeks ago
Open problem
Strong 5-cycle double cover conjecture
arthur
8
12 years 20 weeks ago
Open problem
Petersen coloring conjecture
mdevos
2
12 years 20 weeks ago
Open problem
Characterizing (aleph_0,aleph_1)-graphs
mdevos
2
12 years 20 weeks ago
Open problem
Barnette's Conjecture
Robert Samal
1
12 years 36 weeks ago
Open problem
Hirsch Conjecture
Robert Samal
4
12 years 40 weeks ago
Open problem
Complexity of square-root sum
abie
5
12 years 41 weeks ago
Open problem
Seymour's Second Neighbourhood Conjecture
nkorppi
5
13 years 4 weeks ago
Open problem
Real roots of the flow polynomial
mdevos
2
13 years 17 weeks ago
Open problem
Star chromatic index of complete graphs
Robert Samal
0
13 years 21 weeks ago
category
star coloring
Robert Samal
0
13 years 21 weeks ago
category
edge coloring
Robert Samal
0
13 years 21 weeks ago
category
Dvorak, Zdenek
Robert Samal
0
13 years 21 weeks ago
Open problem
Star chromatic index of cubic graphs
Robert Samal
0
13 years 21 weeks ago
Open problem
Co-separability of filter objects
porton
6
13 years 31 weeks ago
forum topic
Maintaining questions in a subject area
rybu
4
13 years 32 weeks ago
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Recent Activity
Chords of longest cycles
Do any three longest paths in a connected graph have a vertex in common?
Chromatic number of $\frac{3}{3}$-power of graph
3-Edge-Coloring Conjecture
r-regular graphs are not uniquely hamiltonian.
more