1. INITIAL PRINCIPLES | 1 |

1.1. Essence of structure | 1 |

1.2. Semiotic model of structure |
3 |

1.3. Adjustment and simplification of the model |
6 |

2. PROPERTIES OF STRUCTURE |
10 |

2.1. Diversity of structural regularity |
10 |

2.2. Attributes of symmetry - positions |
13 |

2.3. Relationships between regularity and symmetry properties |
18 |

3. STRUCTURE MODEL AND ISOMORPHISM PROBLEM |
24 |

3.1. Structure model as canonical presentation of a graph |
24 |

3.2. Structural equivalence and graph isomorphism |
27 |

3.3. Isomorphism recognition of strongly symmetric graphs |
30 |

3.4. Outputs of two isomorphism algorithms |
31 |

4. STRUCTURAL TRANSFORMATIONS |
34 |

4.1. Structural transformations and reconstructions |
34 |

4.2. Systems of structural transformations |
36 |

4.3. Successions of structural transformations |
39 |

4.4. Structural successions as dynamical or evolutional phenomena |
42 |

Conclusion |
44 |

References |
48 |

SUPPLEMENT: System of structures with six elements |