دوره 5، شماره 2 - ( 8-1389 )                   جلد 5 شماره 2 صفحات 68-61 | برگشت به فهرست نسخه ها


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چکیده:  

We present explicit formulae for the eccentric connectivity index and Wiener index of 2-dimensional square and comb lattices with open ends. The formulae for these indices of 2-dimensional square lattices with ends closed at themselves are also derived. The index for closed ends case divided by the same index for open ends case in the limit N →&infin defines a novel quantity we call compression factor. This factor was calculated for both eccentric connectivity and Wiener index for 2- dimensional square lattice.

نوع مطالعه: پژوهشي | موضوع مقاله: عمومى

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