What is algebra? I want some pictures of constellation girls, with colors! ! There are also some pictures of cute cats! !

Algebra is a branch of mathematics that studies the theory and method of algebraic operation of numbers and words, more precisely, it is a branch of mathematics that studies the theory and method of algebraic operation of real numbers and complex numbers and polynomials and their coefficients. Elementary algebra is the extension and development of old arithmetic. Algebra is a branch of mathematics that studies numbers, quantities, relationships and structures. Elementary algebra is generally taught in middle schools, introducing the basic ideas of algebra: studying what happens when we add or multiply numbers, understanding the concept of variables and how to establish polynomials and find their roots. The research object of algebra is not only numbers, but various abstract structures. For example, an integer set is an algebraic structure as a set with addition, multiplication and order relations. Among them, we only care about various relationships and their nature, but we don't care about the question "what is the number itself". The common types of algebraic structures are groups, rings, fields, modules, linear spaces and so on.

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