Acta et Commentationes Exact and Natural Sciences

Current Issue

Vol 10 No 2 (2020)
Published January 12, 2021
Acta et Commentationes Exact and Natural Sciences

The Acta et Commentationes scientific journal, the Exact and Natural Sciences series is a periodical publication, whose purpose is to reflect and develop the modern scientific phenomenon in the field of Exact and Natural Sciences (Mathematics, Physics, Computer Science, Chemistry, Biology, Geography); dissemination of the results of the scientific performance researches (fundamental and applicative) in the fields of profile; publicizing new technologies in order to implement them; addressing and elucidating the scientific investigative problems specific to the journal profiles.

Mitrofan Cioban
8-16
Professor Ion Valuță – teacher of many generations of students
https://doi.org/10.36120/2587-3644.v10i2.8-16
pdf
Viorel BOSTAN, Ion BOSTAN, Maxim VACULENCO
17-27
Mathematical modeling of the multipair convex-concave teeth contact in precessional gearing
https://doi.org/10.36120/2587-3644.v10i2.17-27
pdf (Русский)
A. V. Arhangel’skii
28-31
A note on some open problems in topological algebra
https://doi.org/10.36120/2587-3644.v10i2.28-31
pdf (Русский)
Mitrofan Choban, Ekaterina Mihaylova
32-46
Submetrizable spaces and open mappings
https://doi.org/10.36120/2587-3644.v10i2.32-46
pdf (Русский)
Mitrofan Choban, Ion Valuţă
47-53
On the monoid of endomorphisms of a topological universal algebra
https://doi.org/10.36120/2587-3644.v10i2.47-53
pdf (Русский)
Dumitru Cozma, Angela Matei
54-67
On integrability of homogeneous rational equations
https://doi.org/10.36120/2587-3644.v10i2.54-67
pdf (Русский)
Ion Jardan
68-74
The behaviour of the inverse operations in the class of preradicals in special cases
https://doi.org/10.36120/2587-3644.v10i2.68-74
pdf (Русский)
Vasile Neagu
75-88
On the essential norm of singular operators with applications
https://doi.org/10.36120/2587-3644.v10i2.75-88
pdf (Русский)
Vadim Repeşco
89-96
Qualitative study of the cuartic system with maximal multiplicity of the line at the infinity
https://doi.org/10.36120/2587-3644.v10i2.89-96
pdf (Русский)
Inga Ţiţchiev, Constantin Gaindric
97-107
Perspective research at the Vladimir Andrunachievici Institute of Mathematics and Computer Science
https://doi.org/10.36120/2587-3644.v10i2.97-107
pdf (Русский)
Galina Vornicescu
108-116
Regularization of some perturbed integral operators
https://doi.org/10.36120/2587-3644.v10i2.108-116
pdf (Русский)
Mitrofan Cioban, Dumitru Cozma, Leonid Dohotaru
117–124
International Symposium "Actual Problems of Mathematics and Informatics" dedicated to the 90th birthday of professor Ion Valutse
https://doi.org/10.36120/2587-3644.v10i2.117–124
pdf (Русский)
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