In this work we explore the phase diagram of binary Nb-S system from ambient pressures up to 250 GPa using $ab$ $initio$ evolutionary crystal structure prediction. We find several new stable compositions and phases, especially in high-pressure regime, investigate their electronic, vibrational, superconducting properties. Our calculations show that all materials, besides low-pressure phases pure...

a definition of two jointly asymptotically nonexpansive mappings s and t on uniformly convex banach space e is studied to approximate common fixed points of two such mappings through weak and strong convergence of an ishikawa type iteration scheme generated by s and t on a bounded closed and convex subset of e. as a consequence of the notion of two jointly asymptotically nonexpansive maps, we c...

Two signi cant recent advances in cryptanalysis namely the di erential at tack put forward by Biham and Shamir BS and the linear attack by Matsui Mat a Mat b have had devastating impact on data encryption algorithms An eminent prob lem that researchers are facing is to design S boxes or substitution boxes so that an encryption algorithm that employs the S boxes is immune to the attacks In this ...