Báo cáo toán học: "Lattice points in Minkowski sums" pps
Báo cáo toán học: "Lattice points in Minkowski sums" pps
... surfaces. Interdiscip. Inf. Sci., 12(2):93–107, 2006.
the electronic journal of combinatorics 15 (2008), #N11 5
Lattice points in Minkowski sums
Christian Haase, Benjamin Nill, Andreas Paffenholz
∗
Institut ... 14M25
Abstract
Fakhruddin has proved that for two lattice polygons P and Q any lattice point
in their Minkowski sum can be written as a sum of a lattice point in P and one...
Báo cáo toán học: "Lattice walks in Zd and permutations with no long ascending subsequences" ppt
... j ending in the value k
1
. Appending
k
2
, we have an ascending subsequence of length j + 1 ending in the value k
2
, contradicting
k
2
∈ B
j
. These properties determine π uniquely, since the ... signed points, called Toeplitz points, inZ
d
, with the following
property: for every n>0, the excess of the number of lattice walks of n steps, from the
origin to all positive Toeplitz p...
Báo cáo toán học: "Lattice Structures from Planar Graphs" ppsx
... four-face fall into the same class, then there is a chain of ’opposite’ vertices
connecting them. Arguing with such a chain enclosing a minimum number of faces leads
to a contradiction. Finally, show ... Every vertex v has one outgoing edge in each label. The edges e
1
,e
2
,e
3
leaving v in
labels 1,2,3 occur in clockwise order. Each edge entering v in label i enters v in the
clock...
Báo cáo toán học: "Ear decompositions in combed graphs" pps
... t). A join pair (G, t) is a join covered pair if each edge of
G lies in a minimum t-join. Note that if T is a t-join in a join pair (G, t) and C is a
circuit with more than half its edges in T , ... circuit containing
P also contains all the other ears of X, including Q. By the inductive hypothesis, H has
a comb T
H
, equivalent to T ∩ EH, that has a balanced circuit containing e and...
Báo cáo toán học: "Semifields in Class F4" ppsx
... P
η
3
are three distinct F
q
3
–rational points conjugate
over F
q
. In either case, a straightfo r ward computation shows that these points are double
points for Γ. Certainly, we see that Γ ... P
1
= P
Φ
2
, since Γ
has no F
q
–rational points, the three distinct F
q
3
–rational intersection points of Γ and the
line y = 0 are {P
1
, P
2
, P
Φ
1
}. Then by (11) we obtain
(u +
√
u
2...
Báo cáo toán học: "Winning Positions in Simplicial Nim" ppsx
... pointed by the vertex v
i
.
Let x = (x
1
, x
2
, . . . , x
p
) be an integer vector such that Ax 0 where A is the point-
circuit incidence matrix defined in Section 3. Comparing the ith coordinate ... pointed and, therefore, have property P. Moreover, as noted in the proof of
Lemma 17, the graph complexes of C
3
and C
4
are also pointed a nd so have property P.
The only remaining graph...
Báo cáo toán học: "Pattern avoidance in partial permutations" ppsx
... [22], obtained in the context
of pattern-avoiding ordered matchings.
Let us begin by giving a description of 312-avoiding and 231-avoiding partial transver-
sals. We first introduce some terminology. ... avoiding simultaneously the two patterns 2-41-3 and 3-14-2.
Baxter permutations were orig inally introduced by G. Baxter [5] in 1964, in the study
of common fixed points of commuting co...
Báo cáo toán học: " EVALUATION OF TRIPLE EULER SUMS" ppsx
... above, we can infer that ζ
N
(a, b, c) can be written as a
linear combination of products of double and single ζ
N
-sums and error terms. Finally,
we shall see that in this linear combination, the ... from applying the skein relation (now viewed as
a renormalization procedure) to link diagrams that encode the intertwining of loop
momenta in Feynman diagrams. This sets a premium on knowing...
Báo cáo toán học: " Code choice in the Chinese as a foreign language classroom" pot
... giving instructions.
T23 felt that a persistence in doing routine activities in Chinese might result in
teacher-fronted lessons in which individual students might only be speaking and practicing ... Shih-Chang Hsin. 2011. The development of TCSL teacher training in
Taiwan . In Teaching and learning Chinese in global contexts, eds. Linda Tsung and
Ken Cruickshank, 165-180. Co...
Báo cáo toán học: " Modeling formalisms in Systems Biology" ppt
... 2007) incorporate boolean rules into constraint-based models for integrated simu-
lation of regulatory and metabolic networks. Integrated FBA (iFBA) extends rFBA by integrating kinetic
information ... Something from nothing – bridging the gap between
constraint-based and kinetic modelling. FEBS J 274(21):5576–5585
Smallbone K, Simeonidis E, Swainston N, Mendes P (2010) Towards a genome-scale...