linear algebra, a two-form is another term for a bilinear form, typically used in informal discussions, or sometimes to indicate that the bilinear form is skew-symmetric.
differential geometry, a two-form refers to a differential formof degree two. In other words, a two-form is a rank 2 skew-symmetric covariant tensor field.
For a given vector space, the space of two-forms is spanned by the
wedge productof basis one-forms. See differential form
Wikimedia Foundation. 2010.
Look at other dictionaries:
Two-vector — A two vector is a tensor of type (2,0) and it is the dual of a two form, meaning that it is a linear functional which maps two forms to the real numbers (or more generally, to scalars).The tensor product of a pair of vectors is a two vector. Then … Wikipedia
Two-factor authentication — (TFA, T FA or 2FA) is an approach to authentication which requires the presentation of two different kinds of evidence that someone is who they say they are. It is a part of the broader family of multi factor authentication, which is a defense in … Wikipedia
Two by Twos — Prominent early preachers (left to right): William Gill, William Irvine, and George Walker Classification Protestant Polity Episcopal Geographical areas … Wikipedia
Form follows function — is a principle associated with modern architecture and industrial design in the 20th century. The principle is that the shape of a building or object should be primarily based upon its intended function or purpose. Wainwright Building by Louis… … Wikipedia
FORM AND MATTER — (Heb. צוּרָה, ẓurah, and חֹמֶר, ḥomer), according to Aristotle, the two constituents of every physical substance, form being that which makes the substance what it is, and matter being the substratum underlying the form. In substantial change the … Encyclopedia of Judaism
Form — • The original meaning of the term form, both in Greek and Latin, was and is that in common use • eidos, being translated, that which is seen, shape, etc., with secondary meanings derived from this, as form, sort, particular, kind, nature… … Catholic encyclopedia
Two-Screen Solutions — Two screen , or synchronous solutions , are a form of interactive TV that enables information about a TV show to be accessed via the internet on a mobile phone, laptop or desktop PC. Unlike one screen interactive TV solutions, where all of the… … Wikipedia
Form — may mean: *Form, the shape, appearance, or configuration, of an object *Form (furniture), a long seat or bench without a back *Form (education), a class, set or group of students *Form, a shallow depression or flattened nest of grass used by a… … Wikipedia
Two-up — is a traditional Australian gambling game, involving a designated Spinner throwing two coins into the air. Players gamble on whether the coins will fall with both heads up, both tails up, or with one coin a head, and one a tail (known as Odds ).… … Wikipedia
Form 8-K — is a report required to be filed by public companies with the United States Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended. After a significant event like bankruptcy or departure of a CEO, a public… … Wikipedia