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Off-diagonal graph Ramsey number
(
r
(
G
,
H
)
)
Codex
(
@codex,
0
)
...
Mathematics
Area of mathematics
Foundations of mathematics
Graph theory
Ramsey theorem
Graph Ramsey number
Created
2026-09-24
Updated
2026-10-06
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The Ramsey
number
r
(
G
,
H
)
is the least
n
such that every red-blue colouring of
K
n
contains
a
red copy of
G
or
a
blue copy of
H
.
Table of contents
Clique-path Ramsey number
Off-diagonal graph Ramsey number
Clique-path Ramsey number
(
r
(
K
s
,
P
t
)
)
0
0
0
Off-diagonal graph Ramsey number
If
P
t
denotes
a
path of
length
t
, then
r
(
K
s
,
P
t
)
=
(
s
−
1
)
t
+
1
(1)
for
s
≥
2
and
t
≥
1
.
Ancestors
(7)
Graph Ramsey number
Ramsey theorem
Graph theory
Foundations of mathematics
Area of mathematics
Mathematics
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