Zobrazeno 1 - 10
of 40
pro vyhledávání: '"S. N. Il'in"'
Autor:
S. N. Il’in
Publikováno v:
Journal of Mathematical Sciences. 256:125-142
In this paper, we present results on the homological classification of semirings for the last ten years and certain new results.
Autor:
S. B. Sugarova, Speech, Saint Petersburg, Russia, V. E. Kuzovkov, E. A. Levina, V. V. Dvoryanchikov, S. V. Levin, A. S. Lilenko, S. N. Il’in, S. Kh. Tsutsieva, O. V. Nozdrevatykh
Publikováno v:
Russian Otorhinolaryngology. 20:8-14
Most patients with CI need to undergo radiation diagnostics during their lifetime, including magnetic resonance imaging (MRI) and computed tomography (CT). Modern cochlear implants are currently compatible with MRI up to 1.5 T. However, clinics condu
Autor:
O. I. Goncharov, M. V. Komarov, I. A. Anikin, S. N. Il’in, S. V. Astashchenko, Speech, Saint Petersburg, Russia
Publikováno v:
Russian Otorhinolaryngology. 19:16-22
Isolated anomalies of the middle ear are one of the most difficult areas of practical otorhinolaryngology. Its relevance is due to the rare occurrence, high technical complexity of performing surgical treatment, and the high frequency of unsatisfacto
Publikováno v:
Journal of Algebra. 476:238-266
In this paper, we introduce homological structure theory of semirings and CP-semirings---semirings all of whose cyclic semimodules are projective. We completely describe semisimple, Gelfand, subtractive, and anti-bounded, CP-semirings. We give comple
Autor:
S. N. Il’in
Publikováno v:
Siberian Mathematical Journal. 58:215-226
We study the semirings whose simple semimodules are all projective. In particular, we establish that for every semiring S this condition implies the injectivity of all simple S-semimodules and show that, in contrast to the case of rings, the projecti
Autor:
Yu. A. Al’pin, S. N. Il’in
Publikováno v:
Lobachevskii Journal of Mathematics. 37:749-752
The criterion for coincidence of spectral radiuses of a complex matrix A and of the matrix |A| obtained by replacing entries of A by their absolute values was given by Wielandt. In this paper we give the new criterion for the above coincidence.
Autor:
S. N. Il'in
Publikováno v:
Journal of Algebra and Its Applications. 20:2150130
It was shown in [Y. Katsov, Tensor products and injective envelopes of semimodules over additively regular semirings, Algebra Colloq. 4 (1997) 121–131.] that each semimodule over an additively regular semiring has an injective envelope. We show the
Publikováno v:
Atmospheric and Oceanic Optics. 28:265-272
The local features of long-term variations in cloud cover over the territory of Siberia are statistically analyzed using a 45-year (1969–2013) time series of meteorological observations at 60 stations and data of climatic zoning of this region acco
Publikováno v:
Atmospheric and Oceanic Optics. 28:175-179
We discussed the results of statistical analysis of regional features of long-term changes in cloud cover on the territory of Siberia according to data of climatic zoning of this region with respect to the total and low-level cloud regimes, using 45-
Publikováno v:
Russian Otorhinolaryngology. 16
The authors analyzed surgical treatment of 438 patients with chronic suppurative otitis media with cholesteatoma; of them 401 patients have undergone various types of sanitation interventions with sound conducting apparatus reconstruction: 180 person