Francesco Severi was an Italian mathematician. He was the chair of the committee on Fields Medal on 1936, at the first delivery.
In mathematics, precisely in the theory of functions of several complex variables, a pluriharmonic function is a real valued function which is locally the real part of a holomorphic function of several complex variables. Sometimes such a function is referred to as n-harmonic function, where n ≥ 2 is the dimension of the complex domain where the function is defined. However, in modern expositions of the theory of functions of several complex variables it is preferred to give an equivalent formulation of the concept, by defining pluriharmonic function a complex valued function whose restriction to every complex line is a harmonic function with respect to the real and imaginary part of the complex line parameter.
Luigi Fantappiè was an Italian mathematician, known for work in mathematical analysis and for creating the theory of analytic functionals: he was a student and follower of Vito Volterra. Later in life, he proposed scientific theories of sweeping scope.
In the theory of functions of several complex variables, Hartogs's extension theorem is a statement about the singularities of holomorphic functions of several variables. Informally, it states that the support of the singularities of such functions cannot be compact, therefore the singular set of a function of several complex variables must 'go off to infinity' in some direction. More precisely, it shows that an isolated singularity is always a removable singularity for any analytic function of n > 1 complex variables. A first version of this theorem was proved by Friedrich Hartogs, and as such it is known also as Hartogs's lemma and Hartogs's principle: in earlier Soviet literature, it is also called the Osgood–Brown theorem, acknowledging later work by Arthur Barton Brown and William Fogg Osgood. This property of holomorphic functions of several variables is also called Hartogs's phenomenon: however, the locution "Hartogs's phenomenon" is also used to identify the property of solutions of systems of partial differential or convolution equations satisfying Hartogs-type theorems.
Gaetano Fichera was an Italian mathematician, working in mathematical analysis, linear elasticity, partial differential equations and several complex variables. He was born in Acireale, and died in Rome.
Guido Zappa was an Italian mathematician and a noted group theorist: his other main research interests were geometry and also the history of mathematics. Zappa was particularly known for some examples of algebraic curves that strongly influenced the ideas of Francesco Severi.
The Rendiconti del Seminario Matematico Università e Politecnico di Torino is a quarterly peer-reviewed mathematical journal published by the University of Turin and the Polytechnic University of Turin. It is the official journal of the Seminario Matematico dell'Università e Politecnico di Torino. It publishes research papers, invited lectures, and conference proceedings. Noticeable among invited lectures are the Lezioni Lagrangiane, a series of lectures which explore recent scientific progress and future developments in different fields of mathematics and are targeted to a wide public. The journal was established as the Conferenze di Fisica e di Matematica in 1929, obtaining its current name in 1947. The editor in chief is Emilio Musso.
Enzo Martinelli was an Italian mathematician, working in the theory of functions of several complex variables: he is best known for his work on the theory of integral representations for holomorphic functions of several variables, notably for discovering the Bochner–Martinelli formula in 1938, and for his work in the theory of multi-dimensional residues.
Rendiconti del Seminario Matematico della Università di Padova is a peer-reviewed mathematics journal published by Seminario Matematico of the University of Padua, established in 1930.
Giovanni Battista Rizza, officially known as Giambattista Rizza, was an Italian mathematician, working in the fields of complex analysis of several variables and in differential geometry: he is known for his contribution to hypercomplex analysis, notably for extending Cauchy's integral theorem and Cauchy's integral formula to complex functions of a hypercomplex variable, the theory of pluriharmonic functions and for the introduction of the now called Rizza manifolds.
The Istituto Nazionale di Alta Matematica Francesco Severi, abbreviated as INdAM, is a government created non-profit research institution whose main purpose is to promote research in the field of mathematics and its applications and the diffusion of higher mathematical education in Italy.
Federico Cafiero was an Italian mathematician known for his contributions in real analysis, measure and integration theory, and in the theory of ordinary differential equations. In particular, generalizing the Vitali convergence theorem, the Fichera convergence theorem and previous results of Vladimir Mikhailovich Dubrovskii, he proved a necessary and sufficient condition for the passage to the limit under the sign of integral: this result is, in some sense, definitive. In the field of ordinary differential equations, he studied existence and uniqueness problems under very general hypotheses for the left member of the given first-order equation, developing an important approximation method and proving a fundamental uniqueness theorem.
Dionigi Galletto was an Italian mathematician and academician.
Luigi Amerio, was an Italian electrical engineer and mathematician. He is known for his work on almost periodic functions, on Laplace transforms in one and several dimensions, and on the theory of elliptic partial differential equations.
Pia Maria Nalli was an Italian mathematician known for her work on the summability of Fourier series, on Morera's theorem for analytic functions of several variables and for finding the solution to the Fredholm integral equation of the third kind for the first time. Her research interests ranged from algebraic geometry to functional analysis and tensor analysis; she was a speaker at the 1928 International Congress of Mathematicians.
Carlo Miranda was an Italian mathematician, working on mathematical analysis, theory of elliptic partial differential equations and complex analysis: he is known for giving the first proof of the Poincaré–Miranda theorem, for Miranda's theorem in complex analysis, and for writing an influential monograph in the theory of elliptic partial differential equations.
Gianfranco Cimmino was an Italian mathematician, working mathematical analysis, numerical analysis, and theory of elliptic partial differential equations: he is known for being the first mathematician generalizing in a weak sense the notion of boundary value in a boundary value problem, and for doing an influential work in numerical analysis.
Roberto Conti was an Italian mathematician, who contributed to the theory of ordinary differential equations and the development of the comparison method.
The Rivista di Matematica della Università di Parma is a peer-reviewed mathematics journal published by the Department of Mathematics and Computer Science of the University of Parma, established in 1950. It is devoted to publication of original research and survey papers in all areas of pure and applied mathematics: it also publishes workshops and conferences proceedings, following the tradition behind its foundation.
The Istituto per le Applicazioni del Calcolo Mauro Picone, abbreviated IAC, is an applied mathematics institute, part of the Consiglio Nazionale delle Ricerche. It was founded in 1927 as a private research institute by Mauro Picone, and as such it is considered the first applied and computational mathematics institute of such kind ever founded.
