(mathematics, topology) A decomposition of a 3-manifold into a link and a fibration over the circle by surfaces bounded by that link.

plural of singular value decomposition

(computer science) A technique that can reduce the runtime of an algorithm by a factor of √ (where n is the size of the input) by dividing the input into √ chunks and performing operations on whole chunks when possible.

(algebraic geometry) A T-stable cellular decomposition of a smooth T-variety.

plural of Białynicki-Birula decomposition

The property of being decompositional, or proceeding by decomposition.

In terms of, or by means of, decomposition.