STUDIES ON Bh TYPE
نویسندگان
چکیده
منابع مشابه
On the Number of Bh -Sets
A set A of positive integers is a Bh-set if all the sums of the form a1+ · · ·+ah, with a1, . . . , ah ∈ A and a1 ≤ · · · ≤ ah, are distinct. We provide asymptotic bounds for the number of Bh-sets of a given cardinality contained in the interval [n] = {1, . . . , n}. As a consequence of our results, we address a problem of Cameron and Erdős (1990) in the context of Bh-sets. We also use these re...
متن کاملDENSE INFINITE Bh SEQUENCES
For h = 3 and h = 4 we prove the existence of infinite Bh sequences B with counting function B(x) = x √ (h−1)2+1−(h−1)+o(1). This result extends a construction of I. Ruzsa for B2 sequences.
متن کاملBh Sequences in Higher Dimensions
In this article we look at the well-studied upper bounds for |A|, where A ⊂ N is a Bh sequence, and generalise these to the case where A ⊂ N d. In particular we give d-dimensional analogues to results of Chen, Jia, Graham and Green.
متن کاملFirst Bh Cochrane Symposium Held
The first BH Cochrane Symposium was held on 12 October 2015 in Sarajevo, Bosnia and Herzegovina (BH), organized by the Agency for Quality and Accreditation in Healthcare in Federation of BH (AKAZ) and Medical Faculty University of Sarajevo. A group of ten national and international experts presented the Cochrane organization and systematic reviews, as well as the IMPACT Observatory, development...
متن کاملA note on the existence of BH(19, 6) matrices
In this note we utilize a non-trivial block approach due to M. Petrescu to exhibit a Butson-type complex Hadamard matrix of order 19, composed of sixth roots of unity. 1 A new Butson-type complex Hadamard matrix A complex Hadamard matrix H is an n × n complex matrix with unimodular entries such that HH∗ = nIn, where ∗ denotes the Hermitian adjoint and In is the identity matrix of order n. Throu...
متن کاملذخیره 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: Journal of the Japan Society of Blood Transfusion
سال: 1966
ISSN: 1883-8383,0546-1448
DOI: 10.3925/jjtc1958.13.81