**Mathematics**

- Spherical zone, the surface area of a spherical segment
- Brillouin zone, the primitive cell of a lattice in reciprocal space.

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### Famous quotes containing the word mathematics:

“Why does man freeze to death trying to reach the North Pole? Why does man drive himself to suffer the steam and heat of the Amazon? Why does he stagger his mind with the *mathematics* of the sky? Once the question mark has arisen in the human brain the answer must be found, if it takes a hundred years. A thousand years.”

—Walter Reisch (1903–1963)

“The three main medieval points of view regarding universals are designated by historians as realism, conceptualism, and nominalism. Essentially these same three doctrines reappear in twentieth-century surveys of the philosophy of *mathematics* under the new names logicism, intuitionism, and formalism.”

—Willard Van Orman Quine (b. 1908)