Abstract: Complex matrix derivatives play an important role in matrix optimization, since they form a theoretical basis for the Karush-Kuhn-Tucker (KKT) conditions associated with matrix variables. We ...

Abstract: In this study, we present the Multi-Staged Matrix Transformations Playfair Cipher (MSMT-PF), a novel approach designed to advance the traditional Playfair cipher's encryption security. While ...

Australian actor Martin Grelis, who appeared in the 1999 first installment of The Matrix film series, has died at the age of 57. “Martin was a bright spark who lit up every room he was in—a talented ...

Martin Grelis has died at the age of 57. The Matrix actor's passing was confirmed on Tuesday (16.12.25) by his talent agency Sophie Jermyn Management, but no details of the cause of his death have ...

The Iberian Peninsula — that massive piece of Europe holding Spain and Portugal — is not the static landmass we imagine. It’s rotating clockwise at a pace too small for humans to feel, yet large ...

The fact the Iberian Peninsula and North Africa are coming together has been happening for hundreds of thousands of years. But how this is taking place — the way the upper part of the Earth’s crust is ...

The Iberian Peninsula in southwestern Europe, occupied by Spain and Portugal, is rotating clockwise, a recent study based on an analysis of interactions between the Eurasian and African tectonic ...

Discover the mind-blowing science behind a screw that works both clockwise and counterclockwise. Learn how its unique design makes direction irrelevant and explore the fascinating physics behind it!