this study presents a new method for interpolation by use of copula for groundwater quality zoning. in this regard, the data of the concentration of bicarbonate in 87 piezometric wells on the plains of kerman and ravar in september 2013 were examined. for this purpose, four archimedean copula including clayton, frank, gumbel and joe have been used. then, the obtained results were compared to th...

Abstract Global Krylov subspace methods are effective iterative solvers for large linear matrix equations. Several Lanczos-type product (LTPMs) solving standard systems of equations have been extended to their global versions. However, the GPBiCGstab( L ) method, which unifies two well-known LTPMs (i.e., BiCGstab( and GPBiCG methods), has developed recently, it shown that this novel method supe...