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cs.CR2017
Optimal Ramp Schemes and Related Combinatorial Objects
Douglas R. Stinson
In 1996, Jackson and Martin proved that a strong ideal ramp scheme is equivalent to an orthogonal array. However, there was no good characterization of ideal ramp schemes that are…
math.CO2017
Some results on the existence of t-all-or-nothing transforms over arbitrary alphabets
Navid Nasr Esfahani, Ian Goldberg, Douglas R. Stinson
A -all-or-nothing transform is a bijective mapping defined on -tuples over an alphabet of size , which satisfies the condition that the values of any input co-…