+**Functional Analysis** is a branch of [Mathematics](/wiki/mathematics) that studies infinite-dimensional [Vector Spaces](/wiki/vector_spaces) and the [Linear Operators](/wiki/linear_operators) acting between them. It provides a powerful framework for understanding complex problems in areas like differential equations and quantum mechanics, extending the foundational concepts of calculus and linear algebra.
+## See also
+- [Topology](/wiki/topology)
+- [Analysis](/wiki/analysis)
+- [Linear Algebra](/wiki/linear_algebra)
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