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  2. Fractional calculus - Wikipedia

    en.wikipedia.org/wiki/Fractional_calculus

    Its first appearance is in a letter written to Guillaume de l'Hôpital by Gottfried Wilhelm Leibniz in 1695. [2] Around the same time, Leibniz wrote to one of the Bernoulli brothers describing the similarity between the binomial theorem and the Leibniz rule for the fractional derivative of a product of two functions. [citation needed]

  3. Le Livre de la mutation de fortune - Wikipedia

    en.wikipedia.org/wiki/Le_Livre_de_la_mutation_de...

    Le Livre de la mutation de fortune is a 1403 poem by Christine de Pizan. [1] [2] It is a universal history that tells the story of how Fortune has affected events. [3]The frame narrative describes the process of the narrator's "transformation into a man" following the death of their husband, a metaphor used by the author expressing her adoption of the traditionally male social role of a court ...

  4. Medal of Merit for Blood Donation - Wikipedia

    en.wikipedia.org/wiki/Medal_of_Merit_for_Blood...

    On plaque on reverse is profile of Grand Duchess Joséphine Charlotte, facing left, surrounded by an inscription S.A.R Joséphine Charlotte Grande-Duchesse de Luxembourg (H.R.H. Joséphine Charlotte Grand Duchess of Luxembourg). Plaques, edges of cross and crown are, according to grade, gilded, silver or bronze.

  5. Organ donation - Wikipedia

    en.wikipedia.org/wiki/Organ_donation

    The National Donor Monument, Naarden, the Netherlands Organ donation is the process when a person authorizes an organ of their own to be removed and transplanted to another person, legally, either by consent while the donor is alive, through a legal authorization for deceased donation made prior to death, or for deceased donations through the authorization by the legal next of kin.

  6. Continued fraction - Wikipedia

    en.wikipedia.org/wiki/Continued_fraction

    Continued fractions can also be applied to problems in number theory, and are especially useful in the study of Diophantine equations. In the late eighteenth century Lagrange used continued fractions to construct the general solution of Pell's equation, thus answering a question that had fascinated mathematicians for more than a thousand years. [9]

  7. Conversion of units - Wikipedia

    en.wikipedia.org/wiki/Conversion_of_units

    Conversion of units is the conversion of the unit of measurement in which a quantity is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity. This is also often loosely taken to include replacement of a quantity with a corresponding quantity that describes the same physical property.

  8. Mutation–selection balance - Wikipedia

    en.wikipedia.org/wiki/Mutation–selection_balance

    Nevertheless, the concept is still widely used in evolutionary genetics, e.g. to explain the persistence of deleterious alleles as in the case of spinal muscular atrophy, [5] [4] or, in theoretical models, mutation-selection balance can appear in a variety of ways and has even been applied to beneficial mutations (i.e. balance between selective ...

  9. Mass fraction (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Mass_fraction_(chemistry)

    Because the individual masses of the ingredients of a mixture sum to , their mass fractions sum to unity: ∑ i = 1 n w i = 1. {\displaystyle \sum _{i=1}^{n}w_{i}=1.} Mass fraction can also be expressed, with a denominator of 100, as percentage by mass (in commercial contexts often called percentage by weight , abbreviated wt.% or % w/w ; see ...