left-handed coordinate system

left-handed coordinate system

[′left ¦hand·əd kō′ȯrd·ən·ət ‚sis·təm]
(mathematics)
A three-dimensional rectangular coordinate system such that when the thumb of the left hand extends in the positive direction of the first (or x) axis, the fingers fold in the direction in which the second (or y) axis could be rotated about the first axis to coincide with the third (or z) axis.
A coordinate system of a Riemannian space which has negative scalar density function.