Skew

Look up skew in Wiktionary, the free dictionary.

Skew may refer to:

In mathematics

• Skew lines, lines that are neither parallel nor intersecting.
• Skew normal distribution, a continuous probability distribution that generalises the normal distribution to allow for non-zero skewness
• Skew field or division ring, a (non-commutative) ring in which division is possible
• Skew-Hermitian matrix, a complex square matrix whose conjugate transpose is also its negative
• Skew lattice, a non-commutative generalization of a lattice
• Skew polygon, a polygon whose vertices do not lie on a plane
• Infinite skew polyhedron, an extension of the concept of polyhedra
• Skew-symmetric graph, a directed graph that is isomorphic to its own transpose graph
• Skew-symmetric matrix, a square matrix whose transpose is also its negative
• Skew tableau, a generalization of Young tableau
• Skewness, a measure of the asymmetry of a probability distribution
• Shear mapping, a particular type of linear transformation

In science and technology

• Skew (also synclinal or gauche; see alkane stereochemistry), a torsion angle between 30° to 90° and –30° to –90°
• Skew ray (optics), an optical path through a rotationally symmetric optical system that is not in a plane of symmetry
• Skew arch, a method of construction that enables an arch bridge to span an obstacle at some angle other than a right angle

In computing

• Clock skew, a phenomenon in which the clock signal arrives at different components at different times.
• Track-to-track skew in disk drives, angle between the start of data on a given track and the start of data on the next track
• Transitive data skew, an issue of data synchronization

In telecommunications

• Skew (fax), the angular deviation of the received frame from rectangularity
• In parallel communication, the difference in arrival time of simultaneously transmitted bits
• For data recorded on multichannel magnetic tape, the difference between reading times of bits recorded in a single transverse line
• Skew (antenna) a method to improve the horizontal radiation pattern

In construction

• Skew, in roofing
• Skew nail or skew screw, a technique whereby a nail or screw is driven at the angle required to create a sound join between two or more pieces of material (generally timber)

Other uses

• Volatility skew, in finance, a downward-sloping volatility smile
• Skew flip turnover, an aircraft maneuver
• SKEW, a published stock market index of implied risk of outlier events
• SKEW, a strategy in fantasy baseball that focuses on high impact middle relievers that register a lot of strikeouts

See also

• SKU or stock-keeping unit, a unique identifier for each distinct product and service that can be purchased in business