# Image vs Superadditive - What's the difference?

image | superadditive |

## As adjectives the difference between image and superadditive

is that image is figurative (of sense of term or discourse) while superadditive is (mathematics|of a function) such that the image of a sum is at least the sum of the images of the summands.

is .

# image

## English

(wikipedia image)

### Noun

(en noun)
• An optical or other representation of a real object; a graphic; a picture.
• The Bible forbids the worship of graven images .
• * {{quote-magazine, date=2012-03
• , author=, title=Pixels or Perish , volume=100, issue=2, page=106, magazine=(American Scientist) citation , passage=Drawings and pictures are more than mere ornaments in scientific discourse. Blackboard sketches, geological maps, diagrams of molecular structure, astronomical photographs, MRI images , the many varieties of statistical charts and graphs: These pictorial devices are indispensable tools for presenting evidence, for explaining a theory, for telling a story.}}
• A mental picture of something not real or not present.
• * {{quote-magazine, date=2013-08-03, volume=408, issue=8847, magazine=(The Economist)
• , title= Revenge of the nerds , passage=Think of banking today and the image is of grey-suited men in towering skyscrapers. Its future, however, is being shaped in converted warehouses and funky offices in San Francisco, New York and London, where bright young things in jeans and T-shirts huddle around laptops, sipping lattes or munching on free food.}}
• (computing) A file that contains all information needed to produce a live working copy. (see disk image, executable image and image copy)
• Most game console emulators do not come with any ROM images for copyright reasons.
• A characteristic of a person, group or company etc., style, manner of dress, how one is, or wishes to be, perceived by others.
• (mathematics) Something mapped to by a function.
• The number 6 is the image of 3 under ''f'' that is defined as f(x) = 2*x.
• (mathematics) The subset of a codomain comprising those elements that are images of something.
• The image of this step function is the set of integers.
• (obsolete) Show; appearance; cast.
• * Dryden
• The face of things a frightful image bears.

#### Synonyms

* (representation) picture * (mental picture) idea * (something mapped to) value * (subset of the codomain) range

#### Derived terms

* imagery * image magic * inverse image * macroimage * mental image * microimage * mirror image * preimage * real image * reimage * spitting image * virtual image

#### Descendants

* German: (l)

### Verb

(imag)
• To represent symbolically.
• To reflect, .
• * 1843 , (Thomas Carlyle), '', book 2, chapter 2, ''St. Edmundsbury :
• we look into a pair of eyes deep as our own, imaging our own, but all unconscious of us; to whom we for the time are become as spirits and invisible!.
• To create an image of.
• * {{quote-magazine, year=2013, month=July-August, author= Fenella Saunders
• , title= Tiny Lenses See the Big Picture, magazine=(American Scientist) , passage=The single-imaging optic of the mammalian eye offers some distinct visual advantages. Such lenses can take in photons from a wide range of angles, increasing light sensitivity. They also have high spatial resolution, resolving incoming images in minute detail.}}
• (computing) To create a complete backup copy of a file system or other entity.
• # superadditive

## English

### Adjective

(-)
• (mathematics, of a function) Such that the image of a sum is at least the sum of the images of the summands.
• Knot genus is superadditive under band sum because $g\left(K_1\sharp_bK_2\right)\ge g\left(K_1\right)+g\left(K_2\right)$.

#### Antonyms

* subadditive