## DUALITY, MATHEMATICS

### BibTeX

@MISC{_duality,mathematics,

author = {},

title = {DUALITY, MATHEMATICS},

year = {}

}

### OpenURL

### Abstract

The term duality used in our daily life means the sort of harmony of two opposite or complementary parts by which they integrate into a whole. Inner beauty in natural phenomena is bound up with duality, which has always been a rich source of inspiration in human knowledge through the centuries. The theory of duality is a vast subject, significant in art and natural languages, a common mathematical structure can be found in 3 many physical theories. This structure is independent of the physical contents of the system and exists in wider classes of problems in engineering and sciences (see Ref. 1). According to Tonti (2), for every physical theory we can identify (a) some configuration variables that describe the state of the system and (b) some source variables that describe