Báo cáo toán học: "Submanifolds with Parallel Mean Curvature Vector Fields and Equal Wirtinger Angles in Sasakian Space Forms" potx
Báo cáo hóa học: " Research Article Stability of Mixed Type Cubic and Quartic Functional Equations in Random Normed Spaces" potx
... ρ
0,2
k
x
2
2k1
t
2.8
Hindawi Publishing Corporation
Journal of Inequalities and Applications
Volume 2009, Article ID 527462, 9 pages
doi:10.1155/2009/527462
Research Article
Stability of Mixed Type Cubic and Quartic
Functional ... Jalili, R. Saadati, and S. M. Vaezpour, “On the stability of cubic mappings
and quadratic mappings in random nor...
Báo cáo toán học: "Contractions with ($sigma$, c) defect operators " pdf
... class="bi x0 y1 w7 h 3" alt =""
Báo cáo toán học: "Submanifolds with Parallel Mean Curvature Vector Fields and Equal Wirtinger Angles in Sasakian Space Forms" potx
... question in contact geometry, i.e.,
closed submanifolds with equal Wirtinger angles and parallel mean curvature
vector fields, immersed into a Sasakian space form, and obtain the following:
Theorem ... 149–160
Submanifolds with Parallel Mean Curvature
Vector Fields and Equal Wirtinger Angles
in Sasakian Space Forms
*
Guanghan Li
School of Mat...
Báo cáo toán học: "Sorting with a Forklift" doc
... augment the
automaton with green and amber plates, a dictionary, and a notepad. The dictionary
contains a chosen representative of each equivalence class of rise-fall sequences. Metaphor-
ically, the ... natural to
associate with a data structure the collection of such permutations which it can realize.
Furthermore, most natural data structures have a hereditary property. That i...
Báo cáo toán học: "Strings with maximally many distinct subsequences and substrings" ppsx
... absence of each
character, is distinct. Note that (2/3 −
d
)
d
≤ C
(d)
1
≤ (2 +
d
)
d
, for some
d
→ 0.
3 Strings with maximally many distinct substrings
We close with a solution to a simpler ... string, but for d = 2 no such infinite string exists.
2 Strings with maximally many distinct subsequences
Let Σ be a finite alphabet of size d; without loss of generality we t...
Báo cáo toán học: "Coloring with no 2-colored P4’s" pdf
... and w with the same color. Now the vertex v between u, w on P
4
is not in
C, but since u, w areatdistanceatleast3onC the path uvw together with one of the
u, w-segments of C yields a shorter non-contractible ... preliminaries
Suppose F is a nonempty family of connected bipartite graphs, each with at least 3
vertices. An r-coloring of a graph G is said to be F-free if G contains no 2-...
Báo cáo toán học: "Graphs with chromatic roots in the interval (1, 2)" doc
... continuity
that the chromatic polynomial has a root in the interval (1, 2).
We can perform a similar analysis on the graphs obtained by adding the single edge
v
1
v
4
to X(s, t) with the following ... an in nite family of 3-connected non-bipartite graphs with chromatic
roots in the interval (1, 2) thus resolving a conjecture of Jackson’s in the negat...
Báo cáo toán học: "Graphs with many copies of a given subgraph" ppt
... most graphs on n vertices contain
substantially many copies of any fixed graph, but contain no complete bipartite
subgraphs with both parts larger than C log n, for some C > 0, independent of n.
Hence, ... graph of order 2;
- K
2
(s, t) for the complete bipartite graph with parts of size s and t;
- f|
X
for the restriction of a map f to a set X.
Specific notation
Suppos...
Báo cáo toán học: "ords with simple Burrows-Wheeler Transforms" pot
... first. If y does not begin with a then replace it with one of
its conjugates that does. Then each occurrence of the letter b is preceded by a: we can
replace such a pair with φ(a). Similarly each ... replaced with φ(c). The remaining occurrences of a can be replaced with
φ(a) and we see that y is in the range of φ.
Suppose the factors of y come from the fourth set. If y does not begi...
Báo cáo toán học: " Graphs with Given Degree Sequence and Maximal Spectral Radius" doc
... of finding connected graphs of maximal spectral radius with given
number of vertices and edges (but arbitrary degree sequences). Brualdi and Solheid [4]
have shown that such graphs have stepwise ... of those graphs that have largest spectral radius in
the class of all connected graphs with a given degree sequence. We show that in
such a graph the degree sequen...
Báo cáo toán học: "Permutations with Kazhdan-Lusztig polynomial Pid,w (q) = 1 + q h" pptx
... follows that H
u,π
2
(q) = P
u,w
(q) + q
h
2
E
u
(q) .
Since H
u,π
2
(q) − P
u,w
(q) has nonnegative coefficients and deg P
u,w
(q) ≤ (h − 1) /2 < h − 1,
P
u,w
(q) = 1 + · · · + q
s 1
4
For tho se readers ... w]:
I:
(y + 1) z · · · 1( y + z + 2) · · · (y + 2), (y + z + 2)(y + 1) y · · · 2(y + z + 1)...
Báo cáo toán học: "Words with intervening neighbours in infinite Coxeter groups are reduced" doc
... words.
1 Words with intervening neighbours
Let G be the Coxeter graph of a Coxeter group with generators S. Consider a word w in
the alphabet S.
Definition 1.1. A word has the intervening neighbours property ... groups.
the electronic journal of combinatorics 17 (2010), #N9 3
Words with intervening neighbours in
infinite Coxeter groups are reduced
Henrik Eri...
Báo cáo toán học: "Permutations with Ascending and Descending Blocks" pps
... with exactly one descending vertex also has exa ctly one ascending
vertex. Also, conditions (i) and (iii) do not change b ecause they have nothing to do with
whether a block is ascending or descending. ... same block, and if that block is ascending then v
and v
′
are in the same order as their successors, whereas if it is descending they are in
the opposite order.
Now sup...
Báo cáo toán học: "Arcs with large conical subsets" ppsx
... could be several
conical subsets that are large. Fortunately, we have the following
Lemma 3 Let S be an arc with a conical subset T with excess e. Then the excess e
′
of
any other conical subset ... (q + 5)/2 can contain at
most one conical subset with excess a t most 2.
Proof : Assume S has a conical subset T with excess e 2. Then by Lemma 3, a ny
other conical subset...
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