In algebra, a flat cover of a module M over a ring is a surjective homomorphism from a flat module F to M that is in some sense minimal. Any module over a ring has a flat cover that is unique up to (non-unique) isomorphism. Flat covers are in some sense dual to injective hulls, and are related to projective covers and torsion-free covers.
In algebra, a flatcover of a module M over a ring is a surjective homomorphism from a flat module F to M that is in some sense minimal. Any module over...
itself is flat. In some areas of module theory, a flat resolution must satisfy the additional requirement that each map is a flat pre-cover of the kernel...
Flat Earth is an archaic and scientifically disproven conception of the Earth's shape as a plane or disk. Many ancient cultures subscribed to a flat-Earth...
open without a special tool. Lockable covers do not have to be made as heavy to resist being dislodged. A round flat metal casting will typically warp in...
release on that label. The cover artwork is a reproduction of Duane Michals' 1949 photograph, Homage to Puvis de Chavannes. In the Flat Field is considered one...
a dry lake is covered by deposits of alkaline compounds, it is known as an alkali flat. If covered with salt, it is known as a salt flat. If its basin...
any faithfully flat and quasi-compact morphism is a cover. These topologies are closely related to descent. The "pure" faithfully flat topology without...
Flat Stanley is an American children's book series written by author Jeff Brown (January 1, 1926 – December 3, 2003). The idea for the book began as a...
The World Is Flat: A Brief History of the Twenty-first Century is a book by Thomas L. Friedman that analyzes globalization, primarily in the early 21st...
The myth of the flat Earth, or the flat-Earth error, is a modern historical misconception that European scholars and educated people during the Middle...
with opening roof", the loading area of a flat is entirely open and accessible once the cover is removed. Flats form a large proportion of goods wagons;...
Valley across US Route 95 at the town of Amargosa Valley, Nevada. The "flat" covers an area of approximately 120 square miles (310 km2) and ranges in elevation...
Pseudoscientific beliefs in a flat Earth are promoted by a number of organizations and individuals. The claims of modern flat Earth proponents are not based...
A flat cap is a rounded cap with a small stiff brim in front, originating in Northern England. The hat is also known in Ireland as a paddy cap; in Scotland...
such as electricians, plumbers, and mechanics, also often charge flat rates to cover their labour for their services. In a survey in 2014 in Australia...
perfect rings. Any R-module M has a flatcover, which is equal to the projective cover if M has a projective cover. Projective resolution Proof: Let N...
universal cover of a complete flat manifold is Euclidean space. This can be used to prove the theorem of Bieberbach (1911, 1912) that all compact flat manifolds...
Salt flats, Salt flat, Salt Flats, or Salt Flat may refer to: Salt pan (geology), a flat expanse of ground covered with salt and other minerals Dry lake...
Tortilla Flat (1935) is an early John Steinbeck novel set in Monterey, California. The novel was the author's first clear critical and commercial success...
to have the 14 bolt rocker cover (6 for the cover and 8 for the bolt-in plug holders). Later engines use the full flatcover with six bolts to secure it...
Flat as a Pancake is the debut studio album by American rock band Head East. The album was originally released independently by Pyramid Records. However...
legislation against flatcovers. It was briefly replaced by "Son of Brumbrella", but today the groundstaff rely on manpower to manoeuvre the covers onto the Edgbaston...
smaller glass cover slips. The main function of the cover slip is to keep solid specimens pressed flat, and liquid samples shaped into a flat layer of even...
The Cover 6 is also good for calling a corner blitz from the weak side, and having the backer coverflats instead. Cover 6 blends the best of Cover 2 and...
paperboard covered with buckram or other cloth, heavy paper, or occasionally leather). It has a flexible, sewn spine which allows the book to lie flat on a...
FlatWorld is a publisher of college-level textbooks and educational supplements for a worldwide audience founded in 2007 as Flat World Knowledge by Eric...
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