The term "Mandelbrot" often refers to the Mandelbrot set, a complex mathematical structure discovered by mathematician Benoit Mandelbrot in the late 20th century. This set is defined in the complex number plane and is famous for its intricate and infinitely detailed boundary, which exhibits self-similarity at various scales. The Mandelbrot set is visually represented by colorful fractals, making it a popular subject in both mathematics and art. It serves as a key example in the field of fractal geometry, illustrating how simple mathematical rules can create complex and beautiful patterns.