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Các bài báo tiêu biểu
The multiplicative Zagreb indices of graph operations
- 2013
Abstract Recently, Todeschini et al. (Novel Molecular Structure Descriptors -
Theory and Applications I, pp. 73-100, 2010), Todeschini and Consonni (MATCH
Commun. Math. Comput. Chem. 64:359-372, 2010) have proposed the multiplicative
variants of ordinary Zagreb indices, which are defined as follows: ∏ 1 = ∏ 1 ( G
) = ∏ v ∈ V ( G ) d G ( v ) 2 , ∏ 2 = ∏ 2 ( G ) = ∏ u v ∈ E ( G ) d G ( u ) d G
( v )...
α-admissible mappings and related fixed point theorems
- 2013
AbstractIn this paper, we prove the existence and uniqueness of a fixed point
for certainα-admissible contraction mappings. Our results generalize and extend
some well-known results on the topic in the literature. We consider some
examples to illustrate the usability of our results.MSC:46N40, 47H10, 54H25,
46T99.