On an extended Hadamard maximum determinant problem

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

LARGEST j-SIMPLICES IN d-CUBES: SOME RELATIVES OF THE HADAMARD MAXIMUM DETERMINANT PROBLEM

This paper studies the computationally diicult problem of nding a largest j-dimensional simplex in a given d-dimensional cube. The case in which j = d is of special interest, for it is equivalent to the Hadamard maximum determinant problem; it has been solved for innnitely many values of d but not for d = 14. (The subcase in which j = d 3 (mod 4) subsumes the famous problem on the existence of ...

متن کامل

Unweighted p-center problem on extended stars

An extended star is a tree which has only one vertex with degree larger than two. The -center problem in a graph  asks to find a subset  of the vertices of  of cardinality  such that the maximum weighted distances from  to all vertices is minimized. In this paper we consider the -center problem on the unweighted extended stars, and present some properties to find solution.

متن کامل

Regular Hadamard matrix, maximum excess and SBIBD

When k = q1, q2, q1q2, q1q4, q2q3N , q3q4N , where q1, q2 and q3 are prime powers, and where q1 ≡ 1 (mod 4), q2 ≡ 3 (mod 8), q3 ≡ 5 (mod 8), q4 = 7 or 23, N = 23t, a, b = 0 or 1, t = 0 is an arbitrary integer, we prove that there exist regular Hadamard matrices of order 4k, and also there exist SBIBD(4k, 2k + k, k + k). We find new SBIBD(4k, 2k + k, k + k) for 233 values of k. ∗ The second auth...

متن کامل

Z4-linear Hadamard and extended perfect codes

If $N=2^k>8$ then there exist exactly $[(k-1)/2]$ pairwise nonequivalent $Z_4$-linear Hadamard $(N,2N,N/2)$-codes and $[(k+1)/2]$ pairwise nonequivalent $Z_4$-linear extended perfect $(N,2^N/2N,4)$-codes. A recurrent construction of $Z_4$-linear Hadamard codes is given.

متن کامل

Some Refinements of Hermite-hadamard Inequality and an Open Problem

We presented here a refinement of Hermite-Hadamard inequality as a linear combination of its end-points. The problem of best possible constants is closely connected with well known Simpson’s rule in numerical integration. It is solved here for a wide class of convex functions, but not in general. Some supplementary results are also given.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Mathematical Inequalities & Applications

سال: 2011

ISSN: 1331-4343

DOI: 10.7153/mia-14-78