Signature (disambiguation)

A signature is a hand-written, possibly stylized, version of someone's name, which may be used to confirm the person's identity. The writer of a signature is a signatory or signer.

Signature or signatory may also refer to:

• distinctive, characteristic indicative of identity

In art:

• Seal (East Asia) with sometimes a short inscription

In computing:

• Signature block, text automatically appended at the bottom of an e-mail message, Usenet article, or forum post
• Method signature, in computer programming, especially object-oriented programming, how a method is commonly identified
• Type signature, which defines the inputs and outputs for a function or method

In cryptography:

• Blind signature, digital signature in which the content of a message is disguised
• Digital signature (or public-key digital signature), a method for authenticating information
• Digital Signature Algorithm, a United States Federal Government standard
• Electronic signature, a signature imputed to a text via one or more of several electronic means, or cryptographic means to add non-repudiation and message integrity features to a document
• ElGamal signature scheme, based on the difficulty of computing discrete logarithms
• Key signature (cryptography), the result of applying a hash function on a key
• XML Signature, a W3C recommendation that defines an XML syntax

In mathematics:

• Signature (logic), in mathematical logic
• Signature (permutation), in mathematics
• Signature of a real symmetric bilinear form
  • Metric signature of the metric tensor on a pseudo-Riemannian manifold
  • Signature (topology) of a 4k-dimensional compact oriented manifold
• Signature of a knot, in knot theory
• Prime signature, the multiset of exponents in the prime factorisation of a number

In music:

• Key signature, a series of sharp or flat symbols placed on the staff, designating notes that are to be played one semitone higher or lower
• Signature (Moya Brennan album), a 2006 album by Irish musician Moya Brennan
• Signature (Joe album)
• Signature (Patrice Rushen album)
• Signature Records, a mid-20th century United States-based record label
• Signature song, the one song that a popular and well-established artist is identified with
• Time signature, a notational device used to specify how many beats are in each bar and which note value constitutes one beat

In science:

• Acoustic signature, a combination of acoustic emissions
• Doctrine of signatures, the notion that the appearance of plants is a function of their celestial influences
• Isotopic signature, a characteristic set of ratios of stable or unstable isotopes
• Metric signature, in physics, refers to the form of a metric tensor: the sign of the diagonal components constitutes its "signature"
  • Signature change, in relativity
• Radar cross-section
• Spectral signature, the specific combination of reflected and absorbed electromagnetic (EM) radiation at varying wavelengths which can uniquely identify an object

In other uses:

• Signature bridge, a large bridge that serves as an entrance to a city, or crosses over a main harbor entrance
• Signatory Vintage Scotch Whisky Company, a Scottish company that owns the Edradour distillery
• Signature (whisky), a brand of Indian whisky
• Signature crime, a crime which exhibits characteristics unique to an offender's psychology.
• An alternative word for Section (bookbinding)
• Signature mark, a mark at the bottom of a gathering to assist the bookbinder in collation
• Signature, a brand of the clothing company Levi Strauss & Co.
• Signature (charity)/CACDP, Signature is a trading name of the Council for the Advancement of Communication for Deaf People in the UK.
• Signature Digital Menus, a company specializing in the provision of digital menu boards
• Signature (dance group), a British Bhangra act in the 2008 series of the popular British television show Britain's Got Talent
• Signature Books, a publisher of Mormon works
• Signature Place, a residential skyscraper located in St. Petersburg, Florida.
• Signatures Restaurant, a restaurant formerly owned by Washington lobbyist Jack Abramoff
• Signature School, a charter school in Evansville, Indiana spanning grades 9–12
• Signature Theatres, a movie theatre chain in California, Hawaii, and Montana operated by Regal Entertainment Group
• Signature Team, a French motor racing team.
• Signature Flight Support, a British fixed-base operator
• Diabolical signature, in demonology, the signature of a devil, demon or similar spirit, whose purpose is usually to sign away one's soul
• Doctrine of signatures, in Christian European metaphysics