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The ridging hoe, also known as the Warren hoe [10] and the drill hoe, is a triangular (point-down) or heart-shaped draw hoe that is particularly useful for digging narrow furrows ("drills") and shallow trenches for the planting of seeds or bulbs. [11] [12] The Paxton hoe is similar to the Italian hoe, but with a more rounded rectangular blade.
Two variables are perfectly collinear if there is an exact linear relationship between the two, so the correlation between them is equal to 1 or −1. That is, X 1 and X 2 are perfectly collinear if there exist parameters λ 0 {\displaystyle \lambda _{0}} and λ 1 {\displaystyle \lambda _{1}} such that, for all observations i , we have
Simply, a collineation is a one-to-one map from one projective space to another, or from a projective space to itself, such that the images of collinear points are themselves collinear. One may formalize this using various ways of presenting a projective space. Also, the case of the projective line is special, and hence generally treated ...
In the study of collineations, the case of projective lines is special due to the small dimension. When the line is viewed as a projective space in isolation, any permutation of the points of a projective line is a collineation, [4] since every set of points are collinear. However, if the projective line is embedded in a higher-dimensional ...
The Nagel point is the isotomic conjugate of the Gergonne point.The Nagel point, the centroid, and the incenter are collinear on a line called the Nagel line.The incenter is the Nagel point of the medial triangle; [2] [3] equivalently, the Nagel point is the incenter of the anticomplementary triangle.
For the sake of simplicity, the description below assumes that the points are in general position, i.e., no three points are collinear.The algorithm may be easily modified to deal with collinearity, including the choice whether it should report only extreme points (vertices of the convex hull) or all points that lie on the convex hull [citation needed].
To make a rough estimate of the probability that any given subset of k points is approximately collinear in the way defined above, consider the line between the "leftmost" and "rightmost" two points in that subset (for some arbitrary left/right axis: the top and bottom can be chosen for the exceptional vertical case). A straight line can ...
Hoe or HOE may refer to: Hoe (food), a Korean dish of raw fish; Hoe (letter), a Georgian letter; Hoe (tool), a hand tool used in gardening and farming Hoe-farming, a term for primitive forms of agriculture; Backhoe, a piece of excavating equipment; HOE, pharmaceutical compound number prefix for Hoechst AG