Alternating series
a series, usually infinite, in which successive terms have opposite signs, as 1 − ½ + ¼ − ⅛ +. ….
historical examples
they use a piece of quartz or gl-ss, making horizontal and vertical incisions in alternating series.
oriental women edward bagby pollard
the area is thus an alternating series of three wooded slopes and two gr-ss-covered, relatively level areas.
home range and movements of the eastern cottontail in kansas donald w. janes
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