Geodesic
On the number of independent sets in trees of fixed diameter
Diskretnyj analiz i issledovanie operacij, Tome 16 (2009) no. 2, pp. 61-73

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We obtain lower bounds for the number of independent sets in trees of diameter 6, 7, 8, and 9. We also provide some restrictions on the structure of extremal trees of fixed diameter in the general case. Tabl. 2, bibl. 3.
Keywords: tree, diameter, independent set, lower bounds. 
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     author = {A. B. Dainiak},
     title = {On the number of independent sets in trees of fixed diameter},
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A. B. Dainiak. On the number of independent sets in trees of fixed diameter. Diskretnyj analiz i issledovanie operacij, Tome 16 (2009) no. 2, pp. 61-73. http://geodesic.mathdoc.fr/item/DA_2009_16_2_a4/