In mathematics, a pullback is either of two different, but related processes: precomposition and fibre-product. Its `dual` is pushforward. ==Precomposition== It is such a fundamental process, that it is often passed over without mention, for instance in elementary calculus: this is sometimes called omitting pullbacks, and pervades areas as diver.....

Found on http://en.wikipedia.org/wiki/Pullback

• (n.) That which holds back, or causes to recede; a drawback; a hindrance. • (n.) The iron hook fixed to a casement to pull it shut, or to hold it party open at a fixed point.

Found on http://thinkexist.com/dictionary/meaning/pullback/

tieback *noun* a device (as a decorative loop of cord or fabric) for holding or drawing something back; `the draperies were drawn to the sides by pullbacks`

Found on https://www.encyclo.co.uk/local/20974

*[category theory]* In category theory, a branch of mathematics, a pullback (also called a fiber product, fibre product, fibered product or Cartesian square) is the limit of a diagram consisting of two morphisms {math|f : X → Z} and {math|g : Y → Z} with a common codomain; it is the limit of the cospan {math|X→ Z ← Y}. The pullback is...

Found on http://en.wikipedia.org/wiki/Pullback_(category_theory)

*[differential geometry]* Suppose that φ:M→ N is a smooth map between smooth manifolds M and N; then there is an associated linear map from the space of 1-forms on N (the linear space of sections of the cotangent bundle) to the space of 1-forms on M. This linear map is known as the pullback (by φ), and is frequently denoted by φ*. More g...

Found on http://en.wikipedia.org/wiki/Pullback_(differential_geometry)

**Pull'back`** * noun* ** 1.** That which holds back, or causes to recede; a drawback; a hindrance.

** 2.** * (Arch)* The iron hook fixed to a casement to pull it shut, or to hold it party open at a fixed point.

Found on http://www.encyclo.co.uk/webster/P/192

The downward reversal of a prolonged upward price trend.

Found on http://www.duke.edu/~charvey/Classes/wpg/bfglosp.htm

The downward reversal of a prolonged upward price trend.

Found on http://www.encyclo.co.uk/local/22402

**No exact match found**