This study is the first quantitative report on petroleum biomarkers from the coral reefs
systems of the Persian Gulf. 120 reef surface sediment samples from ten fragile coral reef …

Environmental pollution, particularly oil pollution, has been a long-standing problem in
marine areas. With the aim to assess the pollution status in the Persian Gulf, Iran, herein …

We investigate the summability of the coefficients of m-homogeneous polynomials and m-
linear map**s defined on p spaces. In our research we obtain results on the summability …

Unifying several directions of the development of the study of summing multilinear operators
between Banach spaces, we construct a general framework that studies, under one single …

The best known upper estimates for the constants of the Hardy–Littlewood inequality for m-
linear forms on ℓ p spaces are of the form (2) m− 1. We present better estimates which …

We discuss the multiple summability of a multilinear map T: X 1×⋯× X m→ Y when we have
information on the summability of the maps it induces on each coordinate. Our methods …

The investigation of regularity/summability properties of the coefficients of bilinear forms in
sequence spaces was initiated by Littlewood in 1930. Nowadays, this topic has important …

This book was completed after the passing of the first named author. The rest of authors
would like to dedicate the book to the loving memory of their friend and colleague Jesús …

Duality theory for generalized summing linear operators | Collectanea Mathematica Skip to
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The existence of unimodular forms with small norms on sequence spaces is crucial in a
variety of problems in modern analysis. We prove that the infimum of ‖ A ‖‖ A‖ over all …