The RNA pseudoknot has been shown NP-complete. https://www.ncbi.nlm.nih.gov/pubmed/11108471 There is a n-hole expansion (n=0=no pks) using Feynman Diagrams. The 1-hole algorithm is exact, pol in time. 1-hole includes all pks seen thus far. https://www.ncbi.nlm.nih.gov/pubmed/9925784?dopt=Aabstract … https://www.ncbi.nlm.nih.gov/pubmed/10869031?dopt=Abstract … Great topic.
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could you explain it a bit? What to the symbols mean? What does action move from one area to another with no apparent cause?
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Is that DNA or RNA in the GIF? I thought DNA consisted of A,G,C,T while RNA had A,G,C,U as nucleotide bases...
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Paper here: