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John-Tagore Tevet
Research Group of
Structure Semiotics
by Euroacademy,
Tallinn
john.tevet@graphs.ee

1. THE INITIAL PRINCIPLES1
  1.1. System, Structure, Graph and Semiotics1
  1.2. Graph, its semiotic model and accompanying graphs 3
  1.3. Adjustment and simplification of the model 7
2. SEMIOTIC MODEL AS TEXT OF THE STRUCTURE 9
  2.1. Lexicology of semiotic model 9
  2.2. Structural symmetry - positions 12
  2.3. Position structures 15
  2.4. Bisymmetry, clique- and strong regularity 17
3. SEMIOTIC MODEL AND ISOMORPHISM PROBLEM 24
  3.1. Semiotic model as canonical form of a graph 24
  3.2. The isomorphism problem 27
  3.3. Isomorphism recognition of strongly symmetric graphs 31
  3.4. Outputs of two isomorphism algorithms 32
4. SEMIOTIC MODELLING THE RECONSTRUCTIONS 36
  4.1. Relationships between isomorphic graphs and their subgraphs 36
  4.2. Ulam’s Conjecture 37
  4.3. Modelling the adjacent structures - decomposition (deconstruction) 38
  4.4. Reconstruction - an opposite operation of decomposition 40
AN EXAMPLE: Constructive System of Structures with five elements 44
SUMMARY & REFERENCES 64

Page created June 1st, 2002
Last edition August 8th, 2011

APPENDIX:
IMAGINATION OF THE CREATION PROCESSES IN ART AND SCIENCE
  Definitions 1
  Discussion 5
  Conclusion 14

NB! THE GRAPH ISOMORPHISM PROBLEM IS IN P

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