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  2. List of open-source software for mathematics - Wikipedia

    en.wikipedia.org/wiki/List_of_open-source...

    The primary difference between a computer algebra system and a traditional calculator is the ability to deal with equations symbolically rather than numerically. The precise uses and capabilities of these systems differ greatly from one system to another, yet their purpose remains the same: manipulation of symbolic equations.

  3. Marching squares - Wikipedia

    en.wikipedia.org/wiki/Marching_squares

    Calculate a cell index using comparisons of the contour level(s) with the data values at the cell corners. Use a pre-built lookup table, keyed on the cell index, to describe the output geometry for the cell. Apply linear interpolation along the boundaries of the cell to calculate the exact contour position.

  4. GNU Octave - Wikipedia

    en.wikipedia.org/wiki/GNU_Octave

    GNU Octave is a scientific programming language for scientific computing and numerical computation.Octave helps in solving linear and nonlinear problems numerically, and for performing other numerical experiments using a language that is mostly compatible with MATLAB.

  5. Orders of magnitude (area) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(area)

    List of orders of magnitude for areas 10 0 to 10 7 square metres. Factor (m 2) Multiple Value Item 10 0: 1 square metre: 1 m 2: International A0 paper (841 × 1189 mm) 1.73 m 2: A number commonly used as the average body surface area of a human [27] 1–4 m 2: Area of the top of an office desk 10 1 10–20 m 2: A parking space 70 m 2

  6. Small Latin squares and quasigroups - Wikipedia

    en.wikipedia.org/wiki/Small_Latin_squares_and...

    Finding a given Latin square's isomorphism class can be a difficult computational problem for squares of large order. To reduce the problem somewhat, a Latin square can always be put into a standard form known as a reduced square. A reduced square has its top row elements written in some natural order for the symbol set (for example, integers ...

  7. Euclidean distance matrix - Wikipedia

    en.wikipedia.org/wiki/Euclidean_distance_matrix

    In mathematics, a Euclidean distance matrix is an n×n matrix representing the spacing of a set of n points in Euclidean space.For points ,, …, in k-dimensional space ℝ k, the elements of their Euclidean distance matrix A are given by squares of distances between them.

  8. Simulink - Wikipedia

    en.wikipedia.org/wiki/Simulink

    Simulink is a MATLAB-based graphical programming environment for modeling, simulating and analyzing multidomain dynamical systems.Its primary interface is a graphical block diagramming tool and a customizable set of block libraries.

  9. Geographic coordinate conversion - Wikipedia

    en.wikipedia.org/wiki/Geographic_coordinate...

    = is the square of the first numerical eccentricity of the ellipsoid. f = 1 − b a {\displaystyle f=1-{\frac {b}{a}}} is the flattening of the ellipsoid. The prime vertical radius of curvature N ( ϕ ) {\displaystyle \,N(\phi )} is the distance from the surface to the Z-axis along the ellipsoid normal.