The Pythagorean theorem stands as one of mathematics' most enduring and practical principles. Named after the ancient Greek mathematician Pythagoras, this fundamental concept has guided engineers, ...

Abstract: Complex-variable matrix optimization problems are fundamental in signal processing and related engineering applications, yet existing methods often become computationally inefficient when ...

Abstract: This article is concerned with the problem of functional observer-controller (FOC) design when a complex unmeasurable premise variable (UPV) exists in the Takagi–Sugeno (T–S) fuzzy systems.

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