Báo cáo toán học: "On a Class of Constant Weight Codes" pptx
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] = 2t...
Báo cáo toán học: "On a class of hyperplanes of the symplectic and Hermitian dual polar spaces" doc
... hyperplane of ∆ with deepest point x. If A is a convex subspace
of diameter δ of ∆ and H
A
is a hyperplane of A, then the set of points of ∆ at distance
at most n −δ from H
A
is a hyperplane of ∆, ... respectively maxes, of ∆. The points and
lines contained in a convex subspace of diameter δ ≥ 2 define a dual polar space of rank
δ. In particular, the points...
Báo cáo hóa học: " On a class of second-order nonlinear difference equation" potx
... University of South
China, Hengyang, Hunan 421001,
People’s Republic of China
Full list of author information is
available at the end of the article
Abstract
In this paper, we consider the rule of trajectory ... RESEARCH Open Access
On a class of second-order nonlinear difference
equation
Li Dongsheng
1*
, Zou Shuliang
1
and Liao Maoxin
2
* Correspondence: lds1010@sina.
com
1...
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
Revised August...
Báo cáo toán học: "On a theorem of Erd˝s, Rubin, and Taylor on o choosability of complete bipartite graphs" pptx
... Kostochka
∗
University of Illinois at Urbana–Champaign, Urbana, IL 61801
and Institute of Mathematics, Novosibirsk 630090, Russia
kostochk@math.uiuc.edu
Submitted: April 10, 2002; Accepted: August ... the ideas of Erd˝os, Rubin, and Taylor).
A vertex 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...
Báo cáo toán học: "On a problem of Marco Buratti" pps
... Buratti
Peter Horak
University of Washington
Tacoma, WA 98402
horak@u.washington.edu
Alexander Rosa
McMaster University
Hamilton, Ontario, Canada
rosa@mcmaster.ca
Submitted: Apr 9, 2008; Accepted: Jan 21, ... the sum of a
j
s must be at least as large as the g.c.d. (A
J
) − 1 where A
J
contains q and all a
i
s that are not in J.
The necessity of the above conditions can be shown...
Báo cáo toán học: "On a Generalization of Meyniel’s Conjecture on the Cops and Robbers Game" potx
... Cops and Robbers Game
Noga Alon
∗
Tel Aviv University
and
Institute for Advanced Study, Princeton
nogaa@tau.ac.il
Abbas Mehrabian
Department of Combinatorics and Optimization
University of Waterloo
amehrabian@uwaterloo.ca
Submitted: ... Waterloo
amehrabian@uwaterloo.ca
Submitted: Oct 11, 2010; Accepted: Jan 11, 2011; Published: Jan 19, 2011
Mathematics S ubject Classification: 05C57
Abstra...
Báo cáo toán học: "On a Conjecture of Frankl and F¨redi u" doc
... discussions
with Eva Czabarka, Ida Kantor, Gyula O.H. Ka t ona, Nathan Lemons, Bal´azs Patk´os,
L´aszl´o Sz´ekely, and Jacques Verstra¨ete. The author thanks the NSF for funding her and
IPAM for hosting ... K. Majindar. On the parameters and intersection of blocks of balanced incomplete
block designs. Ann. Math. Statist., 33:1200–1205, 1962.
[12] D. McCarthy and S. A. Vanstone. On the st...
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...
Báo cáo toán học: " On transmission performance of OFDM-based schemes using MMSE-FDE in a frequencyselective fading channel" pot
... interleaved before data modulation. A block interlea-
ver used as channel interleaver in the simulation is of
size 2a and 2b block interleaver, where a and b are the
maximum allowable integers for a ... their waveforms within
the OFDM/TDM frame and cause a higher-order spec-
tral spreading. However, a better PSD of conventional
OFDM is achieved at a cost of higher PAPR and...