Mathematics
- Stack (descent theory), general category-theoretical concept to formalise "pull-back" operations in geometry and algebra
- Algebraic stack, a generalisation of scheme and algebraic space in algebraic geometry; a specific type of the above
- An old term for a sheaf (mathematics)
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Famous quotes containing the word mathematics:
“It is a monstrous thing to force a child to learn Latin or Greek or mathematics on the ground that they are an indispensable gymnastic for the mental powers. It would be monstrous even if it were true.”
—George Bernard Shaw (1856–1950)