Báo cáo toán học: "Chromatic Roots of a Ring of Four Cliques" potx
Báo cáo toán học: "Chromatic number for a generalization of Cartesian product graphs" pot
... of graphs. A d-fold grid over G is a graph obtained from a
d-dimensional rectangular grid of vertices by placing a graph from G on each of the
lines parallel to one of the axes. Thus each vertex ... Ministry of Education of
the Czech Republic as project 1M05 45. This research was also partially supported by the grant GACR
201/09/0197.
†
Research partially supported by the...
Báo cáo toán học: "Chromatic Roots of a Ring of Four Cliques" potx
... of Mathematics & Statistics
University of Western Australia, Australia
gordon@maths.uwa.edu.au
Dave Wagner
Department of Combinatorics and Optimization
University of Waterloo, Canada
dgwagner@math.uwaterloo.ca
Submitted: ... (2011), #P151 13
Chromatic Roots of a Ring of Four Cliques
F.M. Dong
∗
Mathematics and Mathematics Education, National Institute of Education
Na...
Báo cáo toán học: " Colored partitions and a generalization of the braid arrangemen" docx
... U
A
=
H A
H of
an arrangement A. The result by Ziegler &
ˇ
Zivaljevi´c is actually far more general and
is valid for general arrangements of linear subspaces. Here, we state an equivariant
version ... combinatorics of an arrangement of hyperplanes
in
C
n
that generalizes the classical braid arrangement. The arrangement plays
in important role in the work of Schechtman &...
Báo cáo toán học: "DETERMINANT IDENTITIES AND A GENERALIZATION OF THE NUMBER OF TOTALLY SYMMETRIC SELF-COMPLEMENTARY PLANE PARTITIONS" pptx
... observation makes it apparent that similar replace-
ments in the rest of Step 1 of Proposition 5 will produce a valid proof of Lemma 7.
In particular, in (4.17), in the statements of Claim 1 and Claim ... to give a short inductive proof of the determinant evaluation
in Theorem 10 (and also of its q-analogue in [9]), and could also be used to give an
inductive proof of the de...
Báo cáo toán học: "Permutations generated by a stack of depth 2 and an infinite stack in series" potx
... that the set of permutations generated by a stack of depth two and an
infinite stack in series has a basis (defining set of forbidden patterns) consisting of
20 permutations of length 5, 6, 7 and ... σ be a permutation. The following are equivalent.
1. σ can be generated by a stack of depth two and an infinite stack.
2. σ can be generated by Algorithm 4.
3. σ avoids the set...
Báo cáo toán học: "Counting subwords in a partition of a set" potx
... journal of combinatorics 17 (2010), #R19 14
Counting subwords in a partition of a set
Toufik Mansour
Department of Mathematics, University of Haifa, 31905 Haifa, Israel
toufik@math.haifa.ac.il
Mark ... − xA
a 1
,
which implies that
A
a
= A
a−1
+
xA
a 1
A
a−1
−
a 2
m−1
x
ℓ−2
(1 − y)
1 − xA
a 1
=
A
a−1
1 −
a 2
m−1
x
ℓ−1
(1 − y)
1 − xA
a 1
.
the electroni...
Báo cáo toán học: "How frequently is a system of 2-linear Boolean equations solvable" ppsx
... became aware of a recent paper [10] by Daud´e and
Ravelomanana. They studied a close but different case, when a system of m equations
is chosen uniformly at random among all n(n − 1) equations of ... bichromatic with exponentially
small probability. In [8] this exponential smallness was established for the conditional
probability, given that the random graph has a giant component...
Báo cáo toán học: " General decay for a wave equation of Kirchhoff type with a boundary control of memory type" pdf
... (1991)
7. Matsuyama, T, Ikerata, R: On global solutions and energy decay for the wave equations of Kirchhoff type with nonlinear
damping terms. J Math Anal Appl. 204, 729–753 (1996). doi:10.1006/jmaa.1996.0464
8. ... solutions of a wave equation with a boundary control of memory type.
Nonlinear Anal Real World Appl. 11, 2896–2904 (2010). doi:10.1016/j.nonrwa.2009.10.013
18. Cavalcan...
