Acta et Commentationes Exact and Natural Sciences

Current Issue

Vol 20 No 2 (2025)
Published January 19, 2026
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:

1. 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

2. the Directory of Open Access Journals (DOAJ) and can be accessed at https://doaj.org/toc/2587-3644

 

The e-mail address of the journal is aec@upsc.md

Full Issue
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Dumitru Cozma, Mihail Popa
7-11
PROFESSOR VASILE NEAGU ON HIS 80TH BIRTHDAY
https://doi.org/10.36120/2587-3644.v20i2.7-11
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Diana Bîclea, Petru Moloșnic
12-24
On some applications of the essential norms of singular integral operators
https://doi.org/10.36120/2587-3644.v20i2.12-24
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Elena Cuznețov
25-39
On a quasigroup prolongation and its recursive differentiability
https://doi.org/10.36120/2587-3644.v20i2.25-39
pdf
Vasile Neagu
40-61
On some Noetherian criteria for singular integral operators with bounded coefficients
https://doi.org/10.36120/2587-3644.v20i2.40-61
pdf
Lidia Mușinschi
62-82
Lie algebra admitted by the differential system s³(3) and functional basis of invariants polynomials
https://doi.org/10.36120/2587-3644.v20i2.62-82
pdf
Nadezhda Malyutina, Victor Shcherbacov
83-96
An encryption algorithm using a generalization of the Markovski algorithm and T-quasigroups
https://doi.org/10.36120/2587-3644.v20i2.83-96
pdf
Natalia Neagu
97-115
The Lie algebra admitted by the ternary differential system with nonlinearities of degree six
https://doi.org/10.36120/2587-3644.v20i2.97-115
pdf
Inga Titchiev, Olesea Caftanatov, Crinu Dimitriu
116-127
Semantic non-compositional exploration of Bessarabian idioms by LLMs
https://doi.org/10.36120/2587-3644.v20i2.116-127
pdf
Liubomir Chiriac, Natalia Josu, Natalia Lupashco
128-139
On methods of constructing AD-quasigroups
https://doi.org/10.36120/2587-3644.v20i2.128-139
pdf
Vadim Repeșco
140-147
Maximal multiplicity of the line at infinity in a sextic polynomial differential system
https://doi.org/10.36120/2587-3644.v20i2.140-147
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Dumitru Botnaru, Alina Turcanu
148-155
About some commutative operations with classes of subcategories
https://doi.org/10.36120/2587-3644.v20i2.148-155
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