He graduated from Ferdinand I High School in 1944, completed his studies at the University of Bucharest's Faculty of Science, Department of Mathematics, in 1949, and obtained his PhD in Mathematics in 1956, with a thesis on the Monotonic functions of two variables, written under the direction of Miron Nicolescu
. He was appointed Lecturer in 1955, Associate Professor in 1964, and Professor in 1966 (Emeritus in 1991).
The second aspect of the didactical activity of professor Nicolae Dinculeanu which we mention pertains to the (also famous) university textbook "Mathematical Analysis" written jointly with professors Miron Nicolescu and Solomon Marcus (also subject to many successive reprintings).
During 1951-1976, Nicolae Dinculeanu was a scientific researcher of the Mathematics Institute of the Romanian Academy (during 1965-1976 he was deputy director, Miron Nicolescu being director).
Together with professors Miron Nicolescu
and Solomon Marcus, he wrote in 1962 a treatise of Mathematical Analysis in two volumes, for the use of the students of the Faculty of Mathematics.
The University of Bucharest counted among its Professors some distinguished mathematicians, like Octav Onicescu (Probability Theory), Miron Nicolescu
(Mathematical Analysis), Gheorghe Vranceanu (Geometry), Nicolae Theodorescu (Differential Equations), Simion Stoilow (Complex Variables), all of them former students of great mathematicians from France or Italy.
Of course, due to mathematicians like David Emmanuel, Traian Lalescu, Simion Stoilow, Alexandru Myller, Gheorghe Titeica, Dimitrie Pompeiu, Gheorghe Vranceanu, Miron Nicolescu, Grigore C.
Those four I just mentioned had a role in this process, along with Miron Nicolescu and Alexandru Ghika: they are the ones who promoted the epsilon-delta analysis in the teaching of Mathematical Analysis in the fifth decade of the last century.
One of those open problems in Marcus' list attracted my attention and this lead to my first mathematical publication, an eight page paper published in 1956 in the Scientific Bulletin, Mathematical and Physics Section, article presented by Miron Nicolescu.
In the sophomore year, analysis was taught by Miron Nicolescu and again the seminar was led by S.
I also recall with feelings of gratitude my other professors, Miron Nicolescu
(1903 - 1975), Solomon Marcus, Gr.