Abstract
This paper answers an open question of Chen, Doty, and Soloveichik [5], who showed that a function f:ℕk → ℕl is deterministically computable by a stochastic chemical reaction network (CRN) if and only if the graph of f is a semilinear subset of ℕk + l. That construction crucially used “leaders”: the ability to start in an initial configuration with constant but non-zero counts of species other than the k species X 1,…,X k representing the input to the function f. The authors asked whether deterministic CRNs without a leader retain the same power.
We answer this question affirmatively, showing that every semilinear function is deterministically computable by a CRN whose initial configuration contains only the input species X 1,…,X k , and zero counts of every other species. We show that this CRN completes in expected time O(n), where n is the total number of input molecules. This time bound is slower than the O(log5 n) achieved in [5], but faster than the O(n logn) achieved by the direct construction of [5].
The original version of this chapter was revised: The copyright line was incorrect. This has been corrected. The Erratum to this chapter is available at DOI: 10.1007/978-3-319-01928-4_15
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Doty, D., Hajiaghayi, M. (2013). Leaderless Deterministic Chemical Reaction Networks. In: Soloveichik, D., Yurke, B. (eds) DNA Computing and Molecular Programming. DNA 2013. Lecture Notes in Computer Science, vol 8141. Springer, Cham. https://doi.org/10.1007/978-3-319-01928-4_4
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DOI: https://doi.org/10.1007/978-3-319-01928-4_4
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