Difference between revisions of "Open Problems"

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1) In his 1998 thesis <ref name=Winf98 />, Winfree showed that the class of directed [[Abstract Tile Assembly Model (aTAM) | aTAM]] systems at temperature 2 is computationally universal, and in <ref name=CooFuSch11/> Cook et al. showed that undirected temperature 1 aTAM systems could perform computations with a given amount of certainty. They also showed that in 2 planes directed aTAM temperature 1 systems are computationally universal.  Is the class of directed aTAM systems at temperature 1 in the plane computationally universal?  In <ref name=jLSAT1 /> Doty, Patitz, and Summers provide deep insights into this question.
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<li>In his 1998 thesis <ref name=Winf98 />, Winfree showed that the class of directed [[Abstract Tile Assembly Model (aTAM) | aTAM]] systems at temperature 2 is computationally universal, and in <ref name=CooFuSch11/> Cook et al. showed that undirected temperature 1 aTAM systems could perform computations with a given amount of certainty. They also showed that in 2 planes directed aTAM temperature 1 systems are computationally universal.  Is the class of directed aTAM systems at temperature 1 in the plane computationally universal?  In <ref name=jLSAT1 /> Doty, Patitz, and Summers provide deep insights into this question.</li>
2) In <ref name = SFTSAFT/>, Doty et al. introduced a model known as the [[Fuzzy Temperature Fault Tolerance | fuzzy temperature model]] and showed that in this model n by n squares could efficiently self-assemble.  Can systems in this model also perform general computation?
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<li>In <ref name = SFTSAFT/>, Doty et al. introduced a model known as the [[Fuzzy Temperature Fault Tolerance | fuzzy temperature model]] and showed that in this model n by n squares could efficiently self-assemble.  Can systems in this model also perform general computation?</li>
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3) In <ref name = IUSA /> Doty et al. showed that the aTAM is [[Intrinsic universality of the aTAM | intrinsically universal]] for itself, but for [[Directed Tile Assembly Systems | directed]] systems the intrinsically universal tile set fundamentally relies on nondeterminism. Is the class of directed [[Abstract Tile Assembly Model (aTAM) | aTAM]] systems intrinsically universal for itself?
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<li>In <ref name = IUSA /> Doty et al. showed that the aTAM is [[Intrinsic universality of the aTAM | intrinsically universal]] for itself, but for [[Directed Tile Assembly Systems | directed]] systems the intrinsically universal tile set fundamentally relies on nondeterminism. Is the class of directed [[Abstract Tile Assembly Model (aTAM) | aTAM]] systems intrinsically universal for itself?</li>
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<li>Is the [[STAM]] [[Intrinsic Universality in the 2HAM | intrinsically universal]] for itself?  In <ref name=STAMIU /> it was shown that the 3D aTAM is IU for a subset of the STAM, but it remains open whether or not adding negative strength glues allows the 3D aTAM to be IU for the full STAM.</li>
4) Is the [[STAM]] [[Intrinsic Universality in the 2HAM | intrinsically universal]] for itself?   
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<li>Is the class of [[Abstract Tile Assembly Model (aTAM) | aTAM]] systems at temperature 1 [[Intrinsic universality of the aTAM | intrinsically universal]] for itself?</li>
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5) Is the class of [[Abstract Tile Assembly Model (aTAM) | aTAM]] systems at temperature 1 [[Intrinsic universality of the aTAM | intrinsically universal]] for itself?
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<li>In his 1998 thesis <ref name=Winf98 />, Winfree introduced both the [[Abstract Tile Assembly Model (aTAM) | aTAM]] and its more practical counterpart the [[Kinetic Tile Assembly Model (kTAM) | kTAM]].  Currently, the 2HAM does not have a more realistic counterpart.  Formulate a "k2HAM" model which takes into account the size of assemblies binding together (the bigger the assemblies the less likely it is they will bind together) and the lack of rigidity when assemblies come together.</li>
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<li>In [[Self-Assembly of Discrete Self-Similar Fractals]], Patitz and Summers proved several results about self-assembling discrete self-similar fractals, but it is still an open questions as to whether or not there exists a discrete self-similar fractal that can be self-assembled in the [[Abstract Tile Assembly Model (aTAM) | aTAM]].</li>
6) In his 1998 thesis <ref name=Winf98 />, Winfree introduced both the [[Abstract Tile Assembly Model (aTAM) | aTAM]] and its more practical counterpart the [[Kinetic Tile Assembly Model (kTAM) | kTAM]].  Currently, the 2HAM does not have a more realistic counterpart.  Formulate a "k2HAM" model which takes into account the size of assemblies binding together (the bigger the assemblies the less likely it is they will bind together) and the lack of rigidity when assemblies come together.
 
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7) In [[Self-Assembly of Discrete Self-Similar Fractals]], Patitz and Summers proved several results about self-assembling discrete self-similar fractals, but it is still an open questions as to whether or not there exists a discrete self-similar fractal that can be self-assembled in the [[Abstract Tile Assembly Model (aTAM) | aTAM]].
 
  
  
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  year = {2012},
 
  year = {2012},
 
  location = {New Brunswick, New Jersey},
 
  location = {New Brunswick, New Jersey},
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}
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</bibtex></ref>
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<ref name =STAMIU><bibtex>
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@inproceedings{DBLP:conf/dna/HendricksPPR13,
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  author    = {Jacob Hendricks and
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              Jennifer E. Padilla and
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              Matthew J. Patitz and
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              Trent A. Rogers},
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  title    = {Signal Transmission across Tile Assemblies: 3D Static Tiles
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              Simulate Active Self-assembly by 2D Signal-Passing Tiles},
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  booktitle = {DNA Computing and Molecular Programming - 19th International
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              Conference, DNA 19, Tempe, AZ, USA, September 22-27, 2013.
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              Proceedings},
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  year      = {2013},
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  pages    = {90-104},
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  ee        = {http://dx.doi.org/10.1007/978-3-319-01928-4_7},
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  bibsource = {DBLP, http://dblp.uni-trier.de}
 
}
 
}
 
</bibtex></ref>
 
</bibtex></ref>

Revision as of 18:58, 27 May 2014

The following are a list of open problems in self-assembly: