DISCRETA - A Tutorial  
Third Step:
By pressing the button "Parameters", you get the choice
These options give constraints on the choice of the parameters, especially the parameter lambda. For example when you press "\lambda_i", the computer calculatex volues lambda_i for all i smaller or equal t. These values have to be integers as a necessary condition for a t-(v, k, lambda) designs to exist.

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Last updated: April 6, 2000, Evi Haberberger