Iterated function systemIn mathematics, iterated function systems (IFSs) are a method of constructing fractals; the resulting fractals are often self-similar. IFS fractals are more related to set theory than fractal geometry. They were introduced in 1981. IFS fractals, as they are normally called, can be of any number of dimensions, but are commonly computed and drawn in 2D. The fractal is made up of the union of several copies of itself, each copy being transformed by a function (hence "function system").
Iterative methodIn computational mathematics, an iterative method is a mathematical procedure that uses an initial value to generate a sequence of improving approximate solutions for a class of problems, in which the n-th approximation is derived from the previous ones. A specific implementation with termination criteria for a given iterative method like gradient descent, hill climbing, Newton's method, or quasi-Newton methods like BFGS, is an algorithm of the iterative method.
Errors-in-variables modelsIn statistics, errors-in-variables models or measurement error models are regression models that account for measurement errors in the independent variables. In contrast, standard regression models assume that those regressors have been measured exactly, or observed without error; as such, those models account only for errors in the dependent variables, or responses. In the case when some regressors have been measured with errors, estimation based on the standard assumption leads to inconsistent estimates, meaning that the parameter estimates do not tend to the true values even in very large samples.
Continuous or discrete variableIn mathematics and statistics, a quantitative variable may be continuous or discrete if they are typically obtained by measuring or counting, respectively. If it can take on two particular real values such that it can also take on all real values between them (even values that are arbitrarily close together), the variable is continuous in that interval. If it can take on a value such that there is a non-infinitesimal gap on each side of it containing no values that the variable can take on, then it is discrete around that value.
Francesco Sforza PallavicinoFrancesco Maria Sforza Pallavicino or Pallavicini (28 November 1607 – 4 June 1667), was an Italian cardinal, philosopher, theologian, literary theorist, and church historian. A professor of philosophy and theology at the Roman College and a fixture of important academies such as the Accademia dei Lincei and the Academy of Prince Maurice of Savoy, Pallavicino was the author of several highly influential philosophical and theological treatises (praised among others by Gottfried Wilhelm Leibniz, Benedetto Croce and Eugenio Garin) and of a well-known history of the Council of Trent that remained authoritative until the late 19th century.
Calogerà familyThe Calogerà family (Greek: Καλογερά (Kalogera or Kaloghera, from Kalogeros), Croatian: Kalogjera and Kalođera) are an ancient Byzantine-, and later Greco-Venetian, noble gens that has produced many important individuals in the history of Europe and Brazil. With origins in Cyprus and Byzantium, the family achieved levels of wealth, prominence, and aristocracy over the centuries in branches found across modern Greece, Italy, Croatia, Serbia, Albania, Romania, France, and Brazil.
