Image (category theory)

Given a category C and a morphism in C, the image of f is a monomorphism satisfying the following universal property:

There exists a morphism such that .

For any object Z with a morphism and a monomorphism such that , there exists a unique morphism such that .

Remarks:

The image of f is often denoted by im f or Im(f).

One can show that a morphism f is epic if and only if f = im f.

Examples

In the category of sets the image of a morphism is the inclusion from the ordinary image to . In many concrete categories such as groups, abelian groups and (left- or right) modules, the image of a morphism is the image of the correspondent morphism in the category of sets.

In any normal category with a zero object and kernels and cokernels for every morphism, the image of a morphism can be expressed as follows:

Image (board game)

Image is a board game developed by 3M released in 1971. The object of the game is to put together cards that represent an image, a description of a famous person.

External links

Image 1983–1998

Image: 1983-1998 is a compilation of electronic music by Japanese artist Susumu Yokota. It was released in 1998 on Skintone in Japan, and on September 13, 1999 by The Leaf Label in the United Kingdom.

The album includes tracks created between 1983 and 1998 and originally on Yokota's own Skintone label. The album runs semi-chronologically, the first five tracks being from the years 1983 and 1984, whilst the remainder consists of tracks made in 1997 and 1998. The CD version also includes a fold-out of visual art created by Yokota in 1987 and 1988.

In the United Kingdom, the album was released both on CD and on vinyl. Tracks one through seven are included on side A, while the latter six tracks are on side B.

"Nisemono no Uta" samples "Salad Days" by Young Marble Giants.

Track listing

All songs written and composed by Susumu Yokota. 

Windows DreamScene

Windows DreamScene is a utility that allows videos and .gif and other optimized animations to be used as desktop wallpapers. It is one of the Windows Ultimate Extras. Prior to its official announcement, DreamScene was rumored to be in creation under the names Motion Desktop and Borealis. After several months of testing, the final version was released on September 25, 2007.

Rendered content included with DreamScene (such as an animated realization of the Windows Aurora background) was produced by Stardock, while photographic content was provided by the Discovery Channel. Third-party video content in MPEG or WMV format may also be used. In addition, AVI files can be played by altering the file extension.

One of the purported advantages of DreamScene over previous methods of desktop animation is that it makes use of the GPU for display instead of the CPU, leaving the latter free to perform user tasks. To what extent this is achieved is not specified. When a full-screen program is run, such as a game or any window that is maximized, the video will automatically stop since the video will not be seen; this means it uses less GPU and CPU. The video can also be stopped manually. Content encoders need to strive for a balance between compression and file size; decompression requires the CPU, but larger files take up more memory and may cause the disk to be accessed more frequently.

Dream (TV series)

Dream (Hangul: 드림) is a 2009 South Korean television series that follows the lives of a sports agent and K-1 fighters. Starring Joo Jin-mo, Kim Bum and Son Dam-bi (in her acting debut), it aired on SBS from July 27 to September 29, 2009 on Mondays and Tuesdays at 21:55 for 20 episodes.

Plot

Nam Jae-il is a successful sports agent with some famous clients, but when one of his baseball stars gets involved in a drug case, he loses everything. But when the miserable Nam befriends former pickpocket and aspiring K-1 fighter Lee Jang-seok, and tomboyish taebo instructor Park So-yeon, he decides to regain his glory by making Lee a star.

Cast

Dream pop

Dream pop is a subgenre of alternative rock that developed in the 1980s. The style is typified by a preoccupation with atmosphere and texture as much as melody, often resulting in an ethereal or dream-like sound. The term was coined in the late 1980s by Alex Ayuli to describe the music of his band A.R. Kane and later adopted by music critic Simon Reynolds to describe the nascent shoegazing scene in the UK. In the 1990s, dream pop and shoegazing were regionally dependent and interchangeable terms.

Definition

The AllMusic Guide to Electronica defines dream pop as "an atmospheric subgenre of alternative rock that relies on sonic textures as much as melody". Common characteristics are breathy vocals and use of guitar effects, often producing a "wall of noise". The term is often used, particularly in the United States, to describe bands who were part of the shoegazing scene, and shoegazing is seen as a part of dream pop. The term is thought to relate to the "immersion" in the music experienced by the listener. In the view of Reynolds, dream pop "celebrates rapturous and transcendent experiences, often using druggy and mystical imagery". Dream pop tends to focus on textures and moods rather than propulsive rock riffs. Vocals are generally breathy or sung in a near-whisper, and lyrics are often introspective or existential in nature. Reynolds is generally credited as being the first critic to use the term "dream pop" to describe a genre of music, describing the sound as neo-psychedelic and noting the influence of ethereal bands such as Cocteau Twins.PopMatters also noted the evolutionary line from gothic rock to dream pop.