Small Universal Tvdh And Test Tube Systems

We consider the problem of construction of small universal devices based on splicing. Our descriptional complexity measure will be the number of rules present in the system. We present two universal time-varying distributed H systems: of degree 2 with 15 rules and of degree 1 with 17 rules, and also three universal splicing test tube systems with 3 or 2 test tubes and 10 rules.