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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.
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 ...
Eliot Coleman (born 1938) is an American farmer, author, agricultural researcher and educator, and proponent of organic farming.He wrote The New Organic Grower. [1] [2] [3] He served for two years as Executive Director of the International Federation of Organic Agriculture Movements (IFOAM), and was an advisor to the U.S. Department of Agriculture during its 1979–80 study, Report and ...
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
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
Man with a Hoe (French: L'homme à la houe), sometimes called The Labourer, is a painting by the French Realist painter Jean-François Millet, created 1860–1862. It is held in the J. Paul Getty Museum , in Los Angeles .
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.
Hoe-farming is a term introduced (as German: Hackbau; as opposed to Ackerbau) by Eduard Hahn in 1910 to collectively refer to primitive forms of agriculture, defined by the absence of the plough. Tillage in hoe-farming cultures is done by simple manual tools such as digging sticks or hoes .