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Abstract The mesosoma is the power core of ant, containing critical structural and muscular elements for movement head, legs, metasoma. It has been hypothesized that adaptation to ground locomotion loss flight led substantial rearrangements in worker ants it likely ant undergone functional modifications as diversified into different ecological behavioral niches. Despite this importance, studies...

in this study, the shape and size differences between 30 samples of garra rufa and garra variabilis species captured in tigris river were investigated by using geometric morphometric methods. according to the results of this study, there is no difference between these two species in terms of size (cs); however, they are quite different from each other in terms of shape and this difference is si...

g-frames in hilbert spaces are a redundant set of operators which yield a repre-sentation for each vector in the space. in this paper we investigate the connection betweeng-frames, g-orthonormal bases and g-riesz bases. we show that a family of bounded opera-tors is a g-bessel sequences if and only if the gram matrix associated to its denes a boundedoperator.