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Cycle isomorphism: различия между версиями
Материал из WEGA
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Glk (обсуждение | вклад) (Новая страница: «'''Cycle isomorphism''' --- циклический изоморфизм. A bijection <math>f</math> between the vertex sets <math>V_{1}</math> and <math>V_{2}</mat…») |
Glk (обсуждение | вклад) Нет описания правки |
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A bijection <math>f</math> between the vertex sets <math>V_{1}</math> and <math>V_{2}</math> of two | A bijection <math>f</math> between the vertex sets <math>V_{1}</math> and <math>V_{2}</math> of two | ||
''sigraphs'' <math>S_{1}</math> and <math>S_{2}</math>, respectively, is called f '''cycle isomorphism''' (or '''weak isomorphism''') between <math>S_{1}</math> and | ''sigraphs'' <math>S_{1}</math> and <math>S_{2}</math>, respectively, is called f '''cycle isomorphism''' (or '''weak isomorphism''') between <math>S_{1}</math> and | ||
<math>S_{2}</math> if <math>f</math> preserves both vertex | <math>S_{2}</math> if <math>f</math> preserves both vertex adjacencies and cycle signs of | ||
<math>S_{1}</math> and <math>S_{2}</math>. | <math>S_{1}</math> and <math>S_{2}</math>. | ||
