<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE root>
<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Contemporary Mathematics. Fundamental Directions</journal-id><journal-title-group><journal-title xml:lang="en">Contemporary Mathematics. Fundamental Directions</journal-title><trans-title-group xml:lang="ru"><trans-title>Современная математика. Фундаментальные направления</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2413-3639</issn><issn publication-format="electronic">2949-0618</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">22282</article-id><article-id pub-id-type="doi">10.22363/2413-3639-2018-64-4-706-722</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>New Results</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Новые результаты</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">On Complexiﬁcation of Real Spaces and Its Manifestations in the Theory of Bochner and Pettis Integrals</article-title><trans-title-group xml:lang="ru"><trans-title>О комплексификации вещественных пространств и ее проявлениях в теории интегралов Бохнера и Петтиса</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Luna-Elizarrara´s</surname><given-names>M E</given-names></name><name xml:lang="ru"><surname>Луна-Элизаррарас</surname><given-names>М Е</given-names></name></name-alternatives><email>lunae@hit.ac.il</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ram´ırez-Reyes</surname><given-names>F</given-names></name><name xml:lang="ru"><surname>Рамирез-Рейес</surname><given-names>Ф</given-names></name></name-alternatives><email>framirez@esfm.ipn.mx</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shapiro</surname><given-names>M</given-names></name><name xml:lang="ru"><surname>Шапиро</surname><given-names>М</given-names></name></name-alternatives><email>shapiro1945@outlook.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff id="aff1"><institution>Holon Institute of Technology</institution></aff><pub-date date-type="pub" iso-8601-date="2018-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2018</year></pub-date><volume>64</volume><issue>4</issue><issue-title xml:lang="en">Contemporary Problems in Mathematics and Physics</issue-title><issue-title xml:lang="ru">Современные проблемы математики и физики</issue-title><fpage>706</fpage><lpage>722</lpage><history><date date-type="received" iso-8601-date="2019-11-29"><day>29</day><month>11</month><year>2019</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Contemporary Mathematics. Fundamental Directions</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Современная математика. Фундаментальные направления</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Contemporary Mathematics. Fundamental Directions</copyright-holder><copyright-holder xml:lang="ru">Современная математика. Фундаментальные направления</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://journals.rudn.ru/CMFD/article/view/22282">https://journals.rudn.ru/CMFD/article/view/22282</self-uri><abstract xml:lang="en">This work is a continuation of our work [12] where we considered linear spaces in the following two situations: a real space admits a multiplication by complex scalars without changing the set itself; a real space is embedded into a wider set with a multiplication by complex scalars. We studied there also how they manifest themselves when the initial space possesses additional structures: topology, norm, inner product, as well as what happens with linear operators acting between such spaces. Changing the linearities of the linear spaces unmasks some very subtle properties which are not so obvious when the set of scalars is not changed. In the present work, we follow the same idea considering now Bochner and Pettis integrals for functions ranged in real and complex Banach and Hilbert spaces. Finally, this leads to the study of strong and weak random elements with values in real and complex Banach and Hilbert spaces, in particular, some properties of their expectations.</abstract><trans-abstract xml:lang="ru">Данная работа является продолжением нашей работы [12], в которой рассматривались линейные пространства в следующих двух случаях: вещественное пространство допускает умножение на комплексные скаляры без изменения самого множества; вещественное пространство вложено в более широкое множество с умножением на комплексные скаляры. Мы также изучили, как они проявляются в случае, когда исходное пространство обладает дополнительными структурами: топологией, нормой, скалярным произведением, равно как и то, что происходит с линейными операторами, действующими в таких пространствах. Изменение линейности линейных пространств выявляет несколько довольно тонких свойств, не столь очевидных в случае, когда множество скаляров остается неизменным. В настоящей работе мы следуем той же идее, теперь уже при рассмотрении интегралов Бохнера и Петтиса для функций, принимающих значения в вещественных или комплексных банаховых и гильбертовых пространствах. В итоге это приводит нас к изучению сильных и слабых случайных величин со значениями в вещественных и комплексных банаховых и гильбертовых пространствах, в частности, к некоторым свойствам их математических ожиданий.</trans-abstract></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Вербицкий И. Э. О некоторых соотношениях между нормами оператора и его комплексного расширения// Мат. иссл. - 1976. - 42. - C. 3-12.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Вербицкий И. Э., Середа П. П. О норме комплексного расширения оператора// Мат. иссл. - 1995. - 37. - C. 201-206.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Abramovich Y. A., Aliprantis C. D., Sirotkin G., Troitsky G. Some open problems and conjectures associated with the invariant subspace problem// Positivity. - 2005. - 9, № 3. - C. 273-286.</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Alpay D., Luna-Elizarrara´ s M. E., Shapiro M. Normes des extensions quaternionique d’operateurs re´els// C.R. Math. Acad. Sci. Paris. - 2005. - 340, № 9. - C. 639-643.</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Defant A. Best constants for the norm of the complexiﬁcation of operators between Lp-spaces// Lect. Notes Pure Appl. Math. - 1994. - 150. - C. 173-180.</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>Engelking R. General topology. - Berlin: Heldermann Verlag, 1989.</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>Figiel T., Iwaniec T., Pelczyn´ ski A. Computing norms and critical exponents of some operators in Lpspaces// Stud. Math. - 1984. - 79, № 3. - C. 227-274.</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>Fre´chet M. Les e´le´ments ale´atoires de nature quelconque dans un espace distancie´// Ann. Inst. Henri Poincare´. - 1948. - 10, № 4. - C. 215-310.</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Glazman I. M., Ljubicˇ J. I. Finite-dimensional linear analysis: a systematic presentation in problem form. - London: The MIT Press, 1974.</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Krivine J. I. Sur la complexiﬁcation des ope´rateurs de L∞ dans L1// C.R. Math. Acad. Sci. Paris. - 1977. - 284. - C. 377-379.</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>Krivine J. I. Constantes de Grothendieck et fonctions de type positif sur les sphe´res// Adv. Math. - 1979. - 31. - C. 16-30.</mixed-citation></ref><ref id="B12"><label>12.</label><mixed-citation>Luna-Elizarrara´ s M. E., Rami´rez-Reyes F., Shapiro M. Complexiﬁcations of real spaces: general aspects// Georgian Math. J. - 2012. - 19. - C. 259-282.</mixed-citation></ref><ref id="B13"><label>13.</label><mixed-citation>Luna-Elizarrara´ s M. E., Shapiro M. On some properties of quaternionic inner product spaces// В сб.: «25th Int. Coll. Group theoretical methods in physics, Cocoyoc, Me´xico, 2-6 August 2004». - Bristol- Philadelphia: Inst. of Phys. Publ., 2005. - С. 371-376.</mixed-citation></ref><ref id="B14"><label>14.</label><mixed-citation>Luna-Elizarrara´ s M. E., Shapiro M. Preservation of the norms of linear operator acting on some quaternionic function spaces// Oper. Theory Adv. Appl. - 2005. - 157. - C. 205-220.</mixed-citation></ref><ref id="B15"><label>15.</label><mixed-citation>Luna-Elizarrara´ s M. E., Shapiro M. On modules over bicomplex and hyperbolic numbers// В сб.: «Applied complex and quaternionic approximation». - Rome: Edizioni Nuova Cultura, 2009. - С. 76-92.</mixed-citation></ref><ref id="B16"><label>16.</label><mixed-citation>Luna-Elizarrara´ s M. E., Shapiro M. On some relations between real, complex and quaternionic linear spaces// В сб.: «More progresses in analysis». - Singapore: World Scientiﬁc, 2009. - С. 999-1008.</mixed-citation></ref><ref id="B17"><label>17.</label><mixed-citation>Mourier E. E´ le´ments ale´atoires dans un espace de Banach// Ann. Inst. Henri Poincare´. - 1953. - 13, № 3. - C. 161-244.</mixed-citation></ref><ref id="B18"><label>18.</label><mixed-citation>Riesz M. Sur les maxima des formes biline´aires et sur les fonctionelles line´aires// Acta Math. - 1926. - 49. - C. 465-497.</mixed-citation></ref><ref id="B19"><label>19.</label><mixed-citation>Schwabik S., Gouju Y. Topics in Banach space integration. - Hackensack: World Scientiﬁc, 2005.</mixed-citation></ref><ref id="B20"><label>20.</label><mixed-citation>Soukhomlinoﬀ G. A. U¨ ber fortsetzung von linearen funktionalen in linearen komplexen ra¨umen und linearen quaternionra¨umen// Mat. Sb. (N.S.). - 1938. - 3. - C. 353-358.</mixed-citation></ref><ref id="B21"><label>21.</label><mixed-citation>Taylor R. L. Some weak laws for random elements in normed linear spaces// Ann. Math. Stat. - 1972. - 43. - C. 1267-1274.</mixed-citation></ref><ref id="B22"><label>22.</label><mixed-citation>Taylor R. L., Wei D. Laws of large numbers for tight random elements in normed linear spaces// Ann. Probab. - 1979. - 7, № 1. - C. 150-155.</mixed-citation></ref><ref id="B23"><label>23.</label><mixed-citation>Thorin G. O. Convexity theorems generalizing those of M. Riesz and Hadamard with some applications// Comm. Sem. Math. Univ. Lund Medd. Lunds Univ. Sem. - 1948. - 9.- C. 1-58.</mixed-citation></ref><ref id="B24"><label>24.</label><mixed-citation>Vakhania N. N. Random vectors with values in quaternion Hilbert spaces// Theory Probab. Appl. - 1999. - 43, № 1. - C. 99-115.</mixed-citation></ref><ref id="B25"><label>25.</label><mixed-citation>Vakhania N. N., Chobanyan S. A., Tarieladze V. I. Probability distributions on Banach spaces. - Dordrecht: D. Reidel Publ., 1987.</mixed-citation></ref><ref id="B26"><label>26.</label><mixed-citation>Vakhania N. N., Kandelaki N. P. Random vectors with values in complex Hilbert spaces// Theory Probab. Appl. - 1997. - 41, № 1. - C. 116-131.</mixed-citation></ref><ref id="B27"><label>27.</label><mixed-citation>Zygmund A. Trigonometric series. Vol. I. - Cambridge: Cambridge Univ. Press, 1968.</mixed-citation></ref></ref-list></back></article>
