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- D S Ramana
- 2007

When {α i } 1≤i≤m is a sequence of distinct non-zero elements of an integral domain A and γ is a common multiple of the α i in A we obtain, by means of a simple identity for the Vandermonde determinant, a lower bound for sup 1≤i<j≤m φ(α i − α j) in terms of φ(γ), where φ is a function from the nonzero elements of A to R + satisfying certain natural… (More)

- R. Balasubramanian, Gyan Prakash, D. S. Ramana
- Eur. J. Comb.
- 2016

A finite abelian group G of order n is said to be of type III if all divisors of n are congruent to 1 modulo 3. We obtain a classification theorem for sum-free subsets of cardinality very " close " to the largest possible in a finite abelian group G of type III. This theorem, when taken together with known results, gives a complete characterisation of… (More)

- D.Venkata Ramana, J.Suresh Kumar
- 2013

— Companies seeking to survive in the business need to meet the customer demands for variety, time, price and quality. The challenge faced by a supply chain delivering fashion products is to develop a strategy that will improve the match between supply and demand and enable the companies to respond faster to the market. These results in three fundamental… (More)

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