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Two US high school girls rewrite 2,000 years of mathematics with a new Pythagorean proof once thought untouchable

For centuries, the Pythagorean Theorem has occupied a unique position in mathematics: both elementary and profound. Its ...

Which Branch of Mathematics Is Most Widely Used in Engineering?

Find out why the most popular mathematical subjects in engineering in 2026 are calculus and linear algebra. Discover how ...
IEEE

External Constraint Handling for Solving Optimal Control Problems With Simultaneous Approaches and Interior Point Methods

Abstract: Inactive constraints do not contribute to the solution of an optimal control problem, but increase the problem size and burden the numerical computations. We present a novel strategy for ...
IEEE

An Effective Method for Estimating State of Charge of Lithium-Ion Batteries Based on an Electrochemical Model and Nernst Equation

Abstract: Lithium-ion batteries are generally regarded as a leading candidate for energy storage systems. The safe and reliable operation of lithium-ion batteries depends largely on accurate ...