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in mathematics, the letter alpha is used to denote the area underneath a normal curve instatistics to denote significance level when proving null and alternative hypotheses.The letter alpha represents various concepts in physics and chemistry, including alpha radiationangular accelerationalpha particlesalpha carbon and strength ofelectromagnetic interaction (as Fine-structure constant). Alpha also stands for thermal expansion coefficient of a compound in physical chemistry. It is also commonly used inmathematics in algebraic solutions representing quantities such as angles.
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