An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

Same as → bijection.

→ bijective; → mapping.

A continuous mapping u = f(x) of a domain D in an n-dimensional Euclidean space (n≥ 2) into the n-dimensional Euclidean space is called conformal at a point x₀∈ D if it has the properties of constancy of dilation and preservation of angles at this point.

→ conformal; → mapping.

A method for imaging the continuum light distributions of the → accretion disks of → cataclysmic variable stars. It relies on geometrical information contained in eclipse light curves. An alternative method is → Doppler tomography.

→ eclipse; → mapping.

1) The process of producing a map.
2) Math.: The operation of establishing → relations between two → sets in which one element of the second set is assigned to each element of the first set, as the expression y = x². Same as → function.

Verbal noun from → map + → -ing.

1) Naqšé bardâri;, → map.
2) Hamtâyeš, verbal noun of hamtâyidan literally "folding together, relating units together," from ham- "together," → com-, + tâ "fold, plait, ply; piece, part; single, a single unit of a pair," also a multiplicative suffix; Mid.Pers. tâg "piece, part," + infinitive suffix -idan.

Same as → surjection.

→ surjective; → mapping.