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  2. Scalpel - Wikipedia

    en.wikipedia.org/wiki/Scalpel

    A scalpel, lancet, or bistoury is a small and extremely sharp bladed instrument used for surgery, anatomical dissection, podiatry and various handicrafts. A lancet is a double-edged scalpel. Scalpel blades are usually made of hardened and tempered steel, stainless steel, or high carbon steel; in addition, titanium, ceramic, diamond and even ...

  3. Curse of dimensionality - Wikipedia

    en.wikipedia.org/wiki/Curse_of_dimensionality

    There is an exponential increase in volume associated with adding extra dimensions to a mathematical space.For example, 10 2 = 100 evenly spaced sample points suffice to sample a unit interval (try to visualize a "1-dimensional" cube) with no more than 10 −2 = 0.01 distance between points; an equivalent sampling of a 10-dimensional unit hypercube with a lattice that has a spacing of 10 −2 ...

  4. ∆ - Wikipedia

    en.wikipedia.org/wiki/%E2%88%86

    Look up ∆ in Wiktionary, the free dictionary. ∆ may refer to: Triangle (∆), one of the basic shapes in geometry. Many different mathematical equations include the use of the triangle. Delta (letter) (Δ), a Greek letter also used in mathematics and computer science. Delta baryon (Δ), one of several Baryons consisting of up and down quarks.