Báo cáo tin học: "On a covering problem for equilateral triangles" pptx
Báo cáo tin học: "On a covering problem for equilateral triangles" pptx
... (a) and (b): Extend/shrink operations on T
A
= ∆AA
1
A
2
and a negative triangle T
=
∆MN P (phase 2, case 2c).
Note that any of the original triangles T
i
in the covering set may participate ... equilateral triangle T
A
⊂ T is called a special triangle
corresponding to vertex A if T
A
is a smaller homothetic copy of T having A as a common
vertex, e.g., ∆AUV in Fig. 1...
Báo cáo toán học: "On a combinatorial problem of Asmus Schmidt" pps
... Orthogonal Polynomials and Applications (VII SPOA) (Granada, 1991), J. Comput.
Appl. Math. 49:1–3 (1993), 243–249.
[6] A. L. Schmidt, “Legendre transforms and Ap´ery’s sequences”, J. Austral. Math. ... was greatly encouraged by C. Krattenthaler to prove binomial iden-
tities by myself. I thank him for our fruitful discussions and for pointing out to me
Andrews’s formula. I thank J. Sondo...
Báo cáo toán học: "On a Class of Constant Weight Codes" pptx
... t)]
and we already know that the absolute value of the inner sum was found to be
smaller than 3
√
q/2. One may extend the codes C(q, n) in a similar way. Using the
same approach as that in ... Pennsylvania State University
E-mail: caragiu@math.psu.edu
Submitted: July 31, 1995; Accepted: January 2, 1996
Abstract. For any odd prime p ower q we first construct a certain non-linear
binar...
Báo cáo toán học: "On a conjecture concerning dyadic oriented matroids" pptx
... totally dyadic
representation A. A dyadic oriented matriod is dyadic of order k if it has a
totally dyadic representation A with full row rank and with the property that
for each pair of adjacent ... Louisville.
scobee@louisville.edu
Submitted: January 7, 1999; Accepted: March 30, 1999
Abstract
A rational matrix is totally dyadic if all of its nonzero subdeterminants are
in {±2
k
:...
Báo cáo toán học: " On a Partition Function of Richard Stanley" pptx
... The Main Theorem
We begin with some preliminaries about partitions and their conjugates. For a given
partition π with parts each N,wedenotebyf
i
(π) the number of appearances of i as a
part ... provides such a division at least for n = 0 and 1 (cf. [1, p.175]).
Problem 2. Identity (7) cries out for combinatorial proof.
I have been informed that A. Sills, A. J. Yee, and C. Bo...
Báo cáo tin học: "On the Spectrum of the Derangement Graph" pptx
... Math. J. 9 (1998), 239-300.
Available at http://arxiv.org/abs/q-alg/9605042.
[17] M. Ram Murty, “Ramanujan Graphs”, J. Ramanujan Math. Soc. 18 (2003), 1-20.
[18] D. J. Rasmussen and C. D. Savage, ... thank Cheng Ku for bringing his conjecture to my attention and for many stimulating
discussions, David Wales for pointing out a discrepancy in an earlier draft, Rick Wilson and the mathe-...
Báo cáo khoa học: "TELEGRAM: A GRAMMAR FORMALISM FOR LANGUAGE PLANNING" pptx
...
TELEGRAM:
A GRAMMAR FORMALISM
FOR LANGUAGE PLANNING
Douglas E. Appelt
Artificial Intelligence Center
SRI
International
Menlo Park, California
O. Abstract
Planning provides the basis for a ... by annotating a unification grammar with assertions
about how grammatical choices are used to achieve various
goals, and by enabling the planner to augment the func-
tional descripti...
Báo cáo hóa học: " On a boundary value problem of a class of generalized linear discrete-time systems" ppt
... canonical form of regular matrix
polynomials. Linear Algebra Appl. 385, 117–130 (2004)
doi:10.1186/1687-1847-2011-51
Cite this article as: Dassios: On a boundary value problem of a class of generalized ... necessary mathematical framework for interesting applications.
Dassios Advances in Difference Equations 2011, 2011:51
http://www.advancesindifferenceequations.com/content/2011/1/51...
Báo cáo khoa học: On a two-sided Tur´an problem docx
... vertices a
1
,a
2
∈ A such that {a
i
,b}∈Ffor i =1, 2.
Suppose instead, that there are three vertices a
1
,a
2
,a
3
∈ A such that {a
i
,b}∈F.Since
F( {a
1
,a
2
,a
3
}, {b})=∅,wehaveF( {a
1
,a
2
,a
3
})=F({b, ... that F( {a, b})=∅.SinceT = { {a, b, c} : |F( {a, b, c})| = t} = ∅,
we may again apply Lemma 9 and derive a contradiction as in the previous paragraph.
Pr...
Báo cáo tin học: "On the quantum chromatic number of a graph" pps
... quantum chromatic number is in Hadamard graphs [7, 5], which are a
special case of orthogonality graphs, so it is natural to consider the larger family.
An orthogonal representation of a graph ... F
c
that we need are that its columns form an orthonormal
basis and the entries all have the same modulus. So the (normalized) character table of
any Abelian group of order c will do (as will a...
Từ khóa: