Abstract: In this note, we propose lower and upper matrix bounds for the positive semidefinite solution of the unified coupled algebraic Riccati equation (UCARE). Using the results of this note, ...

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Abstract: As quantum computer becomes more practical in real world, classical cryptoststems might be broken in the near future. NIST has announced Post Quantum Cryptography (PQC) project to ...

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A mathematical brain teaser challenges people to solve the matchstick equation in just two moves. The puzzle uses matchsticks to create an equation that shows 3 + 3 = 8 and instructs viewers to make ...

Brainteasers are more than just puzzles as they're mental workouts designed to challenge your mind. Brain teasers come in various forms and difficulty levels and offers different levels of difficulty.