**In Mathematics**

- Node (autonomous system), behaviour for an ordinary differential equation near a critical point
- Node (graph theory), a vertex in a mathematical graph
- A type of singular point of a curve.

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### Famous quotes containing the word mathematics:

“... though *mathematics* may teach a man how to build a bridge, it is what the Scotch Universities call the humanities, that teach him to be civil and sweet-tempered.”

—Amelia E. Barr (1831–1919)

“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)

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