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The McCumber Cube is a model for establishing and evaluating information security (information assurance) programs. This security model, created in 1991 by John McCumber, is depicted as a three-dimensional Rubik's Cube -like grid.
The following other wikis use this file: Usage on ar.wikipedia.org جذر تكعيبي; Usage on bs.wikipedia.org Kubni korijen; Usage on en.wiktionary.org
In geometry, a tesseract or 4-cube is a four-dimensional hypercube, analogous to a two-dimensional square and a three-dimensional cube. [1] Just as the perimeter of the square consists of four edges and the surface of the cube consists of six square faces , the hypersurface of the tesseract consists of eight cubical cells , meeting at right ...
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Square roots of negative numbers are called imaginary because in early-modern mathematics, only what are now called real numbers, obtainable by physical measurements or basic arithmetic, were considered to be numbers at all – even negative numbers were treated with skepticism – so the square root of a negative number was previously considered undefined or nonsensical.
Isometric projection and net of naive (1) and optimal (2) solutions of the spider and the fly problem. The spider and the fly problem is a recreational mathematics problem with an unintuitive solution, asking for a shortest path or geodesic between two points on the surface of a cuboid.
A "flippy chain" type fidget toy A fidget spinner. A fidget toy or fidget is typically a small object used for pleasant but purposeless activity with the hands (manual fidgeting or stimming).