If you have a blood ketone meter, this is what the readings mean: 1  Light Ketosis: 0.5 mmol/L â 0.8 mmol/L. 2  Medium Ketosis: 0.9 mmol/L â 1.4 mmol/L. 3  Deep Ketosis (best for weight loss): 1.5 mmol/L â 3.0 mmol/ L.
(3) Symmetry, in the general sense, means the invariance of the structure of a mathematical or physical object with respect to transformations of the object. For example, the symmetry of the laws of the theory of relativity is determined by their invariance with respect to the Lorentz transformations.1) A symmetry, in the narrow sense, is a reflection with respect to a plane Î± in space or with respect to a line a in the plane. Such a symmetry is a transformation of space or the plane that takes every point M into a point Mâ such that the line segment MMâ is perpendicular to Î± or a and is divided in half by Î± or a.
Symmetry is a property of certain geometrical objects that appears the same when mirrored or reflected along an axis. This axis has to cross the shape through the middle of that object dividing into equal halves. The precise notions of symmetry have various measures and operational definitions.