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  2. William Delbert Gann - Wikipedia

    en.wikipedia.org/wiki/William_Delbert_Gann

    William Delbert Gann (June 6, 1878 – June 18, 1955) or WD Gann, was a finance trader who developed the technical analysis methods like the Gann angles [1] [2] and the Master Charts, [3] [4] where the latter is a collective name for his various tools like the Spiral Chart (also called the Square of Nine), [5] [6] [7] the Hexagon Chart, [8] and the Circle of 360.

  3. Gann angles - Wikipedia

    en.wikipedia.org/wiki/Gann_angles

    Gann watched for important tops and bottoms to form on a daily, weekly, or monthly chart and drew his angles from these changes in trend. When the trend is up and the price stays in the space above an ascending angle without breaking below it, the market is strong; when the trend is down and the price remains below a descending angle without breaking above it, the market is weak.

  4. The Tunnel Thru the Air; Or, Looking Back from 1940 - Wikipedia

    en.wikipedia.org/wiki/The_Tunnel_Thru_the_Air;...

    The Tunnel Thru the Air, Or, Looking Back from 1940 is a science fiction novel written by market forecaster William Delbert Gann in 1927. [1] In the Foreword, Gann hinted that this book is more than just a novel because it "contains a valuable secret, clothed in veiled language.

  5. Gann - Wikipedia

    en.wikipedia.org/wiki/Gann

    Gann mac Dela (20th or 16th century BC), joint High King of Ireland; Ernest K. Gann (1910-1991), author, sailor, fisherman and airline captain; Kyle Gann (born 1955), composer and music critic; Thomas Gann (1867–1938), medical doctor and amateur archaeologist; William Delbert Gann (1878-1955), stock market analyst (see Gann angles) Lewis H ...

  6. Geometry index - Wikipedia

    en.wikipedia.org/wiki/Geometry_index

    When τ 4 is close to 0 the geometry is similar to square planar, while if τ 4 is close to 1 then the geometry is similar to tetrahedral. However, in contrast to the τ 5 parameter, this does not distinguish α and β angles, so structures of significantly different geometries can have similar τ 4 values.

  7. Archimedean spiral - Wikipedia

    en.wikipedia.org/wiki/Archimedean_spiral

    Three 360° loops of one arm of an Archimedean spiral. The Archimedean spiral (also known as Archimedes' spiral, the arithmetic spiral) is a spiral named after the 3rd-century BC Greek mathematician Archimedes.

  8. Characteristic length - Wikipedia

    en.wikipedia.org/wiki/Characteristic_length

    In physics, a characteristic length is an important dimension that defines the scale of a physical system. Often, such a length is used as an input to a formula in order to predict some characteristics of the system, and it is usually required by the construction of a dimensionless quantity, in the general framework of dimensional analysis and in particular applications such as fluid mechanics.

  9. Inverse Symbolic Calculator - Wikipedia

    en.wikipedia.org/wiki/Inverse_Symbolic_Calculator

    A user will input a number and the Calculator will use an algorithm to search for and calculate closed-form expressions or suitable functions that have roots near this number. Hence, the calculator is of great importance for those working in numerical areas of experimental mathematics. The ISC contains 54 million mathematical constants.