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math.CO2011
A note on Turan number T(k+1,k,n)
An-Ping Li
Turán number is one of primary topics in the combinatorics of finite sets,in this paper, we will present a new upper bound for Turán number.
math.CO2011
A note on B_k sequences
An-Ping Li
A sequence of non-negative integers is called a B_k sequence if all the sums of arbitrary k elements are different. In this paper, we will present a new estimation for the upper bo…
math.CO2011
A remark on B_3 sequences
An-Ping Li
A sequence of non-negative integers is called a B_k sequence if all the sums of arbitrary k elements are different. In this paper, we will present a new upper bound for B_3 sequenc…