13,023 research outputs found
L.Pacini Savoj-V.V. Ivanov
No full textViene qui pubblicata la corrispondenza di Pacini e Ivanov conservata presso il Centro Studi Vjačeslav Ivanov, Roma. Si tratta di una riedizione delle lettere già pubblicate da me nel 2011, su "Russkaja literatura", inserite qui assieme ad altri materiali epistolari nella sezione "Iz epistoljarnogo nasledija Vjač. Ivanova
Archaeotinodes regiomontana Melnitsky & Ivanov, new species
No full text<i>Archaeotinodes regiomontana</i> Melnitsky & Ivanov, new species <p>Figs. 3–4</p> <p> <b>Description</b> (Fig. 3–4). Thorax brown, abdomen and head pale brown; legs, antennae and wings yellow. DC in forewings short. Structure of sternite V similar to structure of sternite V in <i>Archaeotinodes petropolitana</i> <b>sp. nov.</b> Spur formula 3.4.4. Measurements: body length 4.6 mm; forewing length 5.2 mm.</p> <p>Male genitalia. Sternite IX massive, protruded backwards. Gonopods short, each composed of dorsal branch rounded at apex and extended spine-like process (ventral branch). Ventral lobes of lower appendages fused, this structure divided into two apically acute processes, and the ventral branch of each lower appendage curved in lateral view. Aedeagus well sclerotized. Cerci long, widening towards apex; bases of preanal appendages narrower than their apical parts. Segment X membranous, divided into two long blades entirely covered by preanal appendages. Lower appendages, sternite IX, and outer surface of preanal appendages covered with long, pale hairs.</p> <p> <b>Comparison.</b> <i>Archaeotinodes regiomontana</i> <b>sp. nov.</b> is similar to <i>Archaeotinodes pauper</i> Ulmer, 1912. It differs from the latter in the apical part of the fused ventral branches of the lower appendages. The cerci of the new species are broader than in <i>A. pauper</i> and contiguous dorsally, in contrast to the separated cerci of Ulmer's species.</p> <p> <b>Holotype male.</b> PIN, № 364/56, amber, Eocene.</p> <p> <b>Etymology.</b> From the Latin Regiomontana - Königsberg, the former name of Kaliningrad.</p> <p> <b>Note.</b> The sternal structure of abdominal segment V associated with the pheromone glands in fossil caddisflies previously have been observed in representatives of five families: Philopotamidae, Hydropsychidae, Psychomyiidae, Polycentropodidae, and Glossosomtidae (Ulmer 1912; Mey 1988; Ivanov & Melnitsky 2005, 2006; Melnitsky 2009). In <i>Archaeotinodes petropolitana</i> <b>sp. nov.</b> and <i>A. regiomontana</i> <b>sp. nov.</b>, the anterior margin of abdominal sternite V has a clearly marked, thick, cuticular plate apparently associated with the pheromone gland orifice situated near the antecostal suture. This structure is typical for the representatives of the genus <i>Ecnomus</i> in the recent fauna (Ivanov & Melnitsky 1999, 2002).</p>Published as part of <i>Melnitsky, Stanislav I. & Ivanov, Vladimir D., 2013, Three new caddisflies species of the fossil genus Archaeotinodes (Insecta: Trichoptera: Ecnomidae) from the Baltic Amber, pp. 261-268 in Zootaxa 3635 (3)</i> on pages 264-265, DOI: 10.11646/zootaxa.3635.3.5, <a href="http://zenodo.org/record/222217">http://zenodo.org/record/222217</a>
Local Blaschke-Kakutani ellipsoid characterization and Banach's isometric subspaces problem
No full textWe prove the following local version of Blaschke-Kakutani's characterization of ellipsoids: Let V be a finite-dimensional real vector space, B subset of V a convex body with 0 in its interior, and 2 <= k < dim Van integer. Suppose that the body B is contained in a cylinder based on the cross-section B boolean AND X for every k-plane X from a connected open set of linear k-planes in V. Then in the region of V swept by these k-planes B coincides with either an ellipsoid, or a cylinder over an ellipsoid, or a cylinder over a k-dimensional base. For k = 2 and k = 3 we obtain as a corollary a local solution to Banach's isometric subspaces problem: If all cross-sections of B by k-planes from a connected open set are linearly equivalent, then the same conclusion as above holds. (c) 2025 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY license (http:// creativecommons.org/licenses/by/4.0/).Funding
This work was supported by the Russian Science Foundation under Grant 21-11-00040. The second author was supported by the Engineering and Physical Sciences Research 24 S. Ivanov et al. / Journal of Functional Analysis 289 (2025) 111063 Council [EP/S021590/1], The EPSRC Centre for Doctoral Training in Geometry and Number Theory (The London School of Geometry and Number Theory), University College London.
Acknowledgments
The authors are grateful to the anonymous referee for prompting us to write Remark 1.5
Antithesis union in mythoepics of vyacheslav ivanov
Get PDFCurrent article deals with the subject of characteristic mythological intellection of Silver Age Russian poet and symbolist V. Ivanov. The role of myth and mythogenesis are being estimated in the poetic concept of V. Ivanov. The influence of R. Wagner's and F. Nietzsche's ideas on the way Ivanov sees appropriation of art, symbol, and the role of artist is being consistently proven. Mostly the poet stated his ideas in articles, still in each case he manifested them in his poems, making poetry the sui generis illustration for his musement. The poet's twofold world view is being analyzed. Major landmarks for transforming of philosophical principles, the Apollo and the Dionysus ones, into poetic legacy of V. Ivanov are being outlined. The interlacing of pagan Dionysus principle and the Christian ones is being explored. It is being proven that the symbolic realization of the principles stated above enables the author to view them as a merged whole, connected to his own personal becoming stages
Antithesis union in mythoepics of vyacheslav ivanov
No full textCurrent article deals with the subject of characteristic mythological intellection of Silver Age Russian poet and symbolist V. Ivanov. The role of myth and mythogenesis are being estimated in the poetic concept of V. Ivanov. The influence of R. Wagner's and F. Nietzsche's ideas on the way Ivanov sees appropriation of art, symbol, and the role of artist is being consistently proven. Mostly the poet stated his ideas in articles, still in each case he manifested them in his poems, making poetry the sui generis illustration for his musement. The poet's twofold world view is being analyzed. Major landmarks for transforming of philosophical principles, the Apollo and the Dionysus ones, into poetic legacy of V. Ivanov are being outlined. The interlacing of pagan Dionysus principle and the Christian ones is being explored. It is being proven that the symbolic realization of the principles stated above enables the author to view them as a merged whole, connected to his own personal becoming stages
Interview with Vyacheslav V. Ivanov about semiotics, the languages of the brain and history of ideas
Get PDFThe interview with one of the founders of the Tartu–Moscow school, semiotician Vyacheslav Vsevolodovich Ivanov (b. 1929) from August 2010, describes V. V. Ivanov’s opinions of several scholars and their work (including Evgenij Polivanov, Mikhail Bakhtin, Andrej Kolmogorov, Nikolaj Marr etc.), his relationships with his father Vsevolod Ivanov, as well as V. V. Ivanov’s views on the past and future of semiotics, with some emphasis on neurosemiotics, zoosemiotics, semiotics of culture, cybernetics, history of linguistics, study and protection of small languages. The interview also deals with V. V. Ivanov’s book Even and Odd
Semileptonic and nonleptonic decays of B(c)
No full textUsing our relativistic constituent quark model we present results on the exclusive nonleptonic and semileptonic decays of the B-c-meson. The nonleptonic decays are studied in the framework of the factorization approximation. We calculate the branching ratios for a large set of exclusive nonleptonic and semileptonic decays of the B-c meson and compare our results with the results of other models
Scientific Article in the Dissertation System Research V. Ivanov
No full textПриводятся основные термины и определения диссертационного исследования и опубликованных по теме диссертации научных статей, Установлены связи между характеризующими признаками диссертации и статьи. Показано, что качество диссертации связано с качеством статейного материала, поэтому качество диссертации можно довести до нормативного уровня использованием приведенных мер.= The main terms and definitions of the dissertation research and scientific articles published on the topic of the dissertation are given, the connections between the characterizing features of the dissertation and the article are established. It is shown that the quality of the dissertation is related to the quality of the article material; therefore, the quality of the dissertation can be brought to the normative level using the above measures
Tinodes isalo Melnitsky & Ivanov, 2016, new species
No full text<i>Tinodes isalo</i> new species <p>(Figs 2 A–E)</p> <p>Holotype: male. Length of each forewing 3.5 mm, body length 2.5 mm. Abdomen, wings and thorax light brown. Head and legs pale yellowish. Antennae, palpi, tibiae, and tarsi covered with long dark hairs. Abdominal sternite V with small lateral cuticular sclerites associated with ducts of sternal pheromone glands.</p> <p> <b>Male genitalia.</b> Ventral part of annular segment IX wide in lower part and shorter dorsally, its posterior margin well sclerotized (Fig. 2 A). Dorsal part of segment IX connected to ventral by narrow neck well developed, strongly dilated, its lateral surface somewhat convex in dorsal view (Fig. 2 B), posteroventral margin slightly concave. Long preanal appendages curved slightly downwards (Fig. 2 A) and straight in dorsal view (Fig. 2 B), with numerous long hairs. Gonocoxite (basal segment) of each gonopod (inferior appendage) about as long as broad in lateral view; with sclerotized and almost straight posterior margin (Fig. 2 A); gonostyle (apical segment) narrow, curved slightly dorsad and mesad, subequal to gonocoxite, with small sclerotized mesal tuberculi at base (Figs. 2 A, 2C). Aedeagus (Fig. 2 A, 2D, 2E) curved ventrad, with enlarged membranous apical part and long straight dorsolateral projections of phallobase ("paraproctal processes" of Johanson & Oláh 2007) provided with 3 pairs of strong lateral spines (Figs. 2 D, 2E); ventral part of phallobase sclerotized with deep incision; strong transversal spine directed to left side visible inside apical part of aedeagus (Fig. 2 D).</p> <p> This species is similar to <i>Tinodes irwini</i> Johanson & Oláh 2007 from Madagascar (Finarantsoa Province, Ranomafana National Park, about 250 km NE from Isalo National Park) and differs from it in the shape and proportions of the inferior appendages in which the gonostyles are undivided in <i>T</i>. <i>isalo</i> (each bifid with a short dorsal and a long posteroventral branch in <i>T</i>. <i>irwini</i>); in the almost straight preanal appendages of <i>T</i>. <i>isalo</i> (curved laterad basally in <i>T. irwini</i>); and the structures of aedeagus having dorsolateral projections ("paraproctal sclerites") straight and longer than the phallobase with 3 lateral spines, whereas in <i>T</i>. <i>isalo</i> these projections are shorter curved lateral projections of the phallobase possessing 2 short and 2 very long spines. The aedeagus in the new species has a shorter transversal spine, but in <i>T. irwini</i> it has larger spines along the aedeagus.</p> <p>The female sampled with this male might be conspecific with it. The female has a long and slightly curved abdominal segment IX; lack of adequate female descriptions in this genus makes impossible a comparison with other species.</p> <p> <b>Distribution.</b> Madagascar: Ihorombe region.</p> <p> <b>Material.</b> Holotype male, Madagascar, 5 km WNW Ranohira, Isalo National Park, small river, 22º32'21.06”S, 45º22'37.36”E, 802 m, 17.vii.2014; leg. V. Ivanov, S. Melnitsky.</p>Published as part of <i>Melnitsky, Stanislav I. & Ivanov, Vladimir D., 2016, A new species of Tinodes (Trichoptera: Psychomyiidae) from Madagascar, pp. 390-392 in Zootaxa 4136 (2)</i> on page 392, DOI: 10.11646/zootaxa.4136.2.10, <a href="http://zenodo.org/record/261715">http://zenodo.org/record/261715</a>
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