Acta et Commentationes Exact and Natural Sciences

Current Issue

Vol 14 No 2 (2022)
Published January 30, 2023
Vol 14 No 2 (2022): Acta et Commentationes Exact and Natural Sciences
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,  Chemistry and Biology); 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.

The journal is included in the Register of Scientific Journals of the Republic of Moldova in category B and can be accessed at https://ibn.idsi.md/ro/vizualizare_revista/418. The e-mail address of the magazine is aec@ust.md

Full Issue
AeC 2(14)
Ihor Cherevko, Andrii Dorosh, Ivan Haiuk, Andrii Pertsov
7-14
Approximation of solutions of boundary value problems for integro-differential equations of the neutral type using a spline function method
https://doi.org/10.36120/2587-3644.v14i2.7-14
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Mihail Popa
15-23
Problems of the theory of invariants and Lie algebras applied in the qualitative theory of differential systems
https://doi.org/10.36120/2587-3644.v14i2.15-23
pdf
Vasile Neagu, Diana Bîclea
24-37
Extension of linear operators with application
https://doi.org/10.36120/2587-3644.v14i2.24-37
pdf
Alexandru Șubă
38-46
Centers of cubic differential systems with the line at infinity of maximal multiplicity
https://doi.org/10.36120/2587-3644.v14i2.38-46
pdf
Victor Shcherbacov
47-52
Schroder T-quasigroups of generalized associativity
https://doi.org/10.36120/2587-3644.v14i2.47-52
pdf
Omer Gok
53-56
On regular operators on Banach lattices
https://doi.org/10.36120/2587-3644.v14i2.53-56
pdf
Natalia Neagu, Mihail Popa, Victor Orlov
57-67
Stability of unperturbed motion governed by the ternary differential system of Lyapunov-Darboux type with nonlinearities of degree four
https://doi.org/10.36120/2587-3644.v14i2.57-67
pdf
Vadim Repeșco
68-80
Phase portraits of some polynomial differential systems with maximal multiplicity of the line at the infinity
https://doi.org/10.36120/2587-3644.v14i2.68-80
pdf
Alina Turcanu
81-87
The left product, the right product and the theories of relative torsion
https://doi.org/10.36120/2587-3644.v14i2.81-87
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Dumitru Cozma
88-100
Center conditions for a cubic system with two homogeneous invariant straight lines and exponential factors
https://doi.org/10.36120/2587-3644.v14i2.88-100
pdf
Sergiu Corlat, Veaceslav Guzun, Victor Vorona
101-105
Finding N bits using O(N/logN) sums
https://doi.org/10.36120/2587-3644.v14i2.101-105
pdf
Iurie Baltag
106-116
On determination on some exact solutions of the stationary Navier-Stokes equations
https://doi.org/10.36120/2587-3644.v14i2.106-116
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Liubomir Chiriac, Aurel Danilov, Violeta Bogdanova
117-131
Encryption and decryption algorithm based on the Latin groupoid isotopes
https://doi.org/10.36120/2587-3644.v14i2.117-131
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Nicolai Aluchi
132-134
Book Review: Study Of Useful Properties Of Some Coordination Compounds Containing Oximic Ligands, by E. Coropceanu, A. Ciloci, A. Ștefîrță, I. Bulhac, ISBN 978-3-9402237-24-8, 266 p.
https://doi.org/10.36120/2587-3644.v14i2.132-134
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