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What does λ mean in mathematics?
Hello, λ is the lowercase form of the Greek letter lambda in mathematics. It is widely used in mathematics, such as calculus, linear algebra, probability theory, number theory and so on. In calculus, λ often represents Lagrange multiplier, which is used to solve the maximum problem under constraint conditions. In linear algebra, λ represents the eigenvalue of matrix, which is used to diagonalize matrix and solve linear equations. In probability theory, λ represents the parameter of Poisson distribution, which is used to describe the frequency of random events. In number theory, λ stands for Carmichael function, which is used to solve the periodicity of modular exponentiation.

Besides, λ has other applications, such as representing wavelength in physics and anonymous function in computer science. In a word, λ is a very important symbol in mathematics, and its application covers many fields and is an indispensable part of mathematical research.