The geometrical separation between the geoid and the reference ellipsoid is called the geoidal undulation. Terrestrial lateral undulation is the most common mode of terrestrial locomotion for most snake species. It achieves a kind of pulsation or undulation, rather than separating the notes. Geostatistical approach has been defined as the most improved technique in prediction of geoid undulation. Most tadpoles have a flattened tail with which they swim by lateral undulation. Their body movement depends highly on undulation originating near the anterior axial end. For example, sidewinding and lateral undulation are both gaits. A smooth undulation fuses the motion together. However, in algebraic geometry, both inflection points and undulation points are usually called "inflection points". Calculating the undulation is mathematically challenging. The name of the duo refers to the special undulation on the African coast. The course for the next four or five hundred feet had but little undulation. Some of the "Undulation" LPs were relabled "Edison's Last Playoff" (1993).