Báo cáo toán học: "On a Rado Type Problem for Homogeneous Second Order Linear Recurrences" docx
Báo cáo toán học: "On a System of Semilinear Elliptic Equations on an Unbounded Domain" potx
... C. Evans, Partial Diff. Equations, American Math. Society, 1998.
5. C. Vargas an d M. Zuluaga, On a Nonlinear Dirichlet Problem Type at Resonance
and Bifurcation, Partial Differential Equations, ... Elliptic
Equations on an Unbounded Domain
Hoang Quoc Toan
Fa culty of Math., Mech. and Inform.
Vietnam National University, 334 Nguyen Trai, Hanoi, Vietnam
Received Ma y 12, 2004...
Báo cáo toán học: " On a Probability Metric Based on Trotter Operator " ppsx
... (2.4)
On a Probability Metric Based on Trotter Operator 25
present section can be called the characteristic operator (or Trotter s opera-
tor). We recall some definitions and properties of the Trotter ... 2006
Abstract. The main purpose of this paper is to present a probability metric based
on well-known Trotter s operator. Some estimations related to the rate...
Báo cáo toán học: "On a Class of Constant Weight Codes" pptx
... follows that the polynomial
P (X)=(X + x)(X + x)(X + y)(X + y)
On a Class of Constant Weight Codes
Mihai Caragiu
Institute of Mathematics Bucharest
and
Department of Mathematics, Pennsylvania State ... of all the rows of the remaining matrix can
be seen (by replacing each occurrence of a −1 with 0) as a nonlinear code of length
n =4t −1havingaconstantweight[n/2] = 2...
Báo cáo toán học: "On a Strange Recursion of Golomb" ppsx
... sequences. Although only known tech-
niques [G] are used, these are sophisticated, and the problem serves as a useful study of
these techniques, and the algebraic analysis gives partial information about ... have all n non-terminal symbols, we give a combinatorial interpretation for the
transformation L
(r)
w
. After the application of L
(r)
w
to A, the last step is the placement of...
Báo cáo toán học: "On a Strange Recursion of Golomb" pptx
... Department of Mathematics
University of Toronto University of Toronto
Toronto, Canada M5S 1A1 Toronto, Canada M5S 1A1
barbeau@math.utoronto.ca tanny@math.utoronto.ca
Submitted: January 4, 1996; Accepted: ... February 1, 1996.
“There are patterns I must follow just as I must breathe each breath” (Paul
Simon, Patterns, 1964)
Abstract
In an unpublished note, Golomb proposed a family of...
Báo cáo toán học: "On a conjecture concerning dyadic oriented matroids" pptx
... subdeterminants are in
{±2
k
: k ∈ Z}. An oriented matriod is dyadic if it has a totally dyadic represen-
tation A. A dyadic oriented matriod is dyadic of order k if it has a totally dyadic
representation A ... 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 a...
Báo cáo toán học: "On the Stanley-Wilf conjecture for the number of permutations avoiding a given pattern" ppt
... a given
pattern
Richard Arratia
Department of Mathematics
University of Southern California
Los Angeles, CA 90089-1113
email: rarratia@math.usc.edu
Submitted: July 27, 1999; Accepted: August 25, ... 1999.
Abstract. Consider, for a permutation σ ∈S
k
,thenumberF(n, σ) of permuta-
tions in S
n
which avoid σ as a subpattern. The conjecture of Stanley and Wilf is
that for...
Báo cáo toán học: "On a Multiplicative Partition Function" pps
... York-London-
Sydney, 1974.
[6] A. Oppenheim, On an arithmetic function, J. London Math. Soc. 1 (1926), 205-
211.
[7] M. V. Subbarao and A. Verma, Some remarks on a product expansion: an unex-
plored partition function, ... reading of the manuscript and for correcting a crucial mistake in the proof of
Theorem 2.
References
[1] P.T.Bateman,Privatecommunication.
[2] D. Bowman, Private co...
Báo cáo toán học: "Towards a Katona type proof for the 2-intersecting Erd˝s-Ko-Rado theorem o" docx
... transitive. Katona needed an additional fact, which is often called Katona s Lemma.
As a reminder, we recall Katona s Lemma in an algebraic disguise (cf. [19, Ex. 13.28 (a) ]):
Lemma 1 Consider the ... Towards a Katona type proof for the 2-intersecting
Erd˝os-Ko-Rado theorem
Ralph Howard
∗
Department of Mathematics, University of South Carolina
Columbia, SC 29208, USA...
Báo cáo toán học: "On a theorem of Erd˝s, Rubin, and Taylor on o choosability of complete bipartite graphs" pptx
... ,|E|,
assign to w
i,j
the list L(w
i,j
)=e
j
.
the electronic journal of combinatorics 9 (2002), #N9 2
On a theorem of Erd˝os, Rubin, and Taylor on
choosability of complete bipartite graphs
Alexandr ... t-coloring of a hypergraph H is panchromatic if each of the t colors is used
on every edge of G. Thus, an ordinary 2-coloring is panchromatic. Some results...
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. ... On a combinatorial problem of Asmus Schmidt
W. Zudilin
∗
Department of Mechanics and Mathematics
Moscow Lomonosov State University
Vorobiovy Gory, GSP-2, Moscow 119992 RUSSIA
URL:...
Báo cáo toán học: " On a Partition Function of Richard Stanley" pptx
... dealing with partitions whose parts are all some
given N.Welet¯π be that partition made up of the parts of π that are <N. In light of
(11) we see that if N is a part of π an even number of ... questions.
2 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...
Báo cáo toán học: " On a Balanced Property of Derangements" pptx
... number of descents, and [4] for some results on the number of excedances.
Finally, a- derangements are a special case of a class of permutations, namely the set
of all derangements of length n is a ...
Z(w)
q
D
n
(1)
q
=
D(n)
q
.
✸
3.3 a- derangements
Let us call a permutation p an a- derangement if each cycle of p is longer than a. So a
permutation is a 0-...
Báo cáo toán học: "On a class of hyperplanes of the symplectic and Hermitian dual polar spaces" doc
... 5 1A4 5, 5 1A5 0
Abstract
Let ∆ be a symplectic dual polar space DW (2n−1, K) or a Hermitian dual polar
space DH(2n − 1, K, θ), n ≥ 2. We define a class of hyperplanes of ∆ arising from
its Grassmann-embedding ... lemma, we collect some
the electronic journal of combinatorics 16 (2009), #R1 11
On a class of hyperplanes of the symplectic and
Hermi...
Báo cáo toán học: "On a Rado Type Problem for Homogeneous Second Order Linear Recurrences" docx
... Moreover, a recent result by Alekseev and Tsimerman [1] a rmatively
settled Rado s conjecture that for any r 3 there is a homogeneous linear equation that
is not r-regular.
We say that a linear equation ... H. Harborth and S. Maasberg. All Rado numbers for a( x + y) = bz, Disc. Math.
197/198:397 –407, 1999.
[6] B. M. Landman and A. Robertson, Ramsey theory on integers,...
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