Search results for "Matematica"
showing 10 items of 1637 documents
La storia della matematica in classe: percorso di storia e teoria della crittografia
2018
L'articolo mostra come la storia della matematica può diventare strumento didattico.
L’aula in classi multiculturali: approcci di Trasposizione Culturale tra pratica quotidiana e prospettive future sulla formazione matematica
2023
Il fenomeno didattico della multiculturalità è un tema in molti casi discusso, vissuto però sovente in ambito scolastico come problema, non come risorsa. Parecchi sono infatti gli insegnanti che, sperimentando quotidianamente la realtà multiculturale nelle loro classi, manifestano un disagio, spesso associato ad una successiva richiesta di formazione; in molti casi disattesa o non adeguata ai loro bisogni. La ricerca nazionale in campo educativo, rivolta allo studio di questi fenomeni, è infatti a uno stadio quasi embrionale: non molte sono le riflessioni pedagogico-didattiche dirette ad insegnanti e formatori che operano in contesti complessi come quelli qui presi in esame, ancor meno le i…
La figura umana e scientifica di Placido Tardy
2011
Descrizione, attraverso documenti e carteggi, della figura di Placido Tardy, sia dal punto di vista biografico che delle opere scientifiche
An Henstock-Kurzweil type integral on a meausure metric space
2014
We consider an Henstock-Kurzweil type integral defined on a complete measure metric space $X=(X, d)$ endowed with a Radon measure $\mu$ and with a family $\F$ of ``intervals" that satisfies, besides usual conditions, the Vitali covering theorem. In particular, for such integral, we obtain extensions of the descriptive characterization of the classical Henstock-Kurzweil integral on the real line, in terms of $ACG_*$ functions and in terms of variational measures. Moreover we show that, besides the usual Henstock-Kurzweil integral on the real line, such integral includes also the dyadic Henstock-Kurzweil integral, the $GP$-integral and the $s$-HK integral. For this last integral we prove a be…
Fixed point results for $G^m$-Meir-Keeler contractive and $G$-$(\alpha,\psi)$-Meir-Keeler contractive mappings
2013
In this paper, first we introduce the notion of a $G^m$-Meir-Keeler contractive mapping and establish some fixed point theorems for the $G^m$-Meir-Keeler contractive mapping in the setting of $G$-metric spaces. Further, we introduce the notion of a $G_c^m$-Meir-Keeler contractive mapping in the setting of $G$-cone metric spaces and obtain a fixed point result. Later, we introduce the notion of a $G$-$(\alpha,\psi)$-Meir-Keeler contractive mapping and prove some fixed point theorems for this class of mappings in the setting of $G$-metric spaces.
On Problems Driven by the (p(·) , q(·)) -Laplace Operator
2020
The aim of this paper is to prove the existence of at least one nontrivial weak solution for equations involving the (p(· ) , q(· ) ) -Laplace operator. The approach is variational and based on the critical point theory.
A fixed point theorem for (varphi,L)-weak contraction mappings on a partial metric space
2014
In this paper, we explore (varphi,L)-weak contractions of Berinde by obtaining Suzuki-type fixed point results. Thus, we obtain generalized fixed point results for Kannan's, Chatterjea's and Zamfirescu's mappings on a 0-complete partial metric space. In this way we obtain very general fixed point theorems that extend and generalize several related results from the literature.
Zbl 1286.46057 Dowerk, Philip A.; Savchuk, Yurii Induced *-representations and C∗-envelopes of some quantum *-algebras. J. Lie Theory 23, No. 1, 229-…
2013
C*-seminorms and representation on partial *-algebras
2008
In this paper we investigate the *-representations of a partial *-algebra A. In particular, it is proved that, if A is semiassociative and if the set of right multipliers is dense with respect to a seminorm p on A, there exists a bounded and regular *-represenation on A.
Classes of regular Sobolev mappings
2008
We prove that a slight modification of the notion of α-absolute continuity introduced in [D. Bongiorno, Absolutely continuous functions in Rn, J. Math. Anal. Appl. 303 (2005) 119–134] is equivalent to the notion of n, λ-absolute continuity given by S. Hencl in [S. Hencl, On the notions of absolute continuity for functions of several variables, Fund. Math. 173 (2002) 175–189].