Search Results - Feshchenko, Ivan

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  1. 1
    On the closedness of the sum of ranges of operators A k with almost compact products A i ⁎ A j

    On the closedness of the sum of ranges of operators A k with almost compact products A i ⁎ A j by Feshchenko, Ivan S.

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  2. 2
    On the closedness of the sum of ranges of operators Ak with almost compact products Ai⁎Aj

    On the closedness of the sum of ranges of operators Ak with almost compact products Ai⁎Aj by Feshchenko, Ivan S.

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  3. 3
    When is the sum of closed subspaces of a Hilbert space closed?

    When is the sum of closed subspaces of a Hilbert space closed? by Feshchenko, Ivan

    Published in arXiv.org
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  4. 4
    On the inverse best approximation property of systems of subspaces of a Hilbert space

    On the inverse best approximation property of systems of subspaces of a Hilbert space by Feshchenko, Ivan

    Published in arXiv.org
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  5. 5
    On the optimal error bound for the first step in the method of cyclic alternating projections

    On the optimal error bound for the first step in the method of cyclic alternating projections by Feshchenko, Ivan

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  6. 6
    Dissecting a brick into bars

    Dissecting a brick into bars by Feshchenko, Ivan, Radchenko, Danylo, Radzivilovsky, Lev, Tantsiura, Maksym

    Published in Geometriae dedicata
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  7. 7
    When is the sum of complemented subspaces complemented?

    When is the sum of complemented subspaces complemented? by Feshchenko, Ivan

    Published in arXiv.org
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  8. 8
    On the divergence of series of p-th powers of operator norms

    On the divergence of series of p-th powers of operator norms by Feshchenko, Ivan

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  9. 9
    On the divergence of series of the form \sum_{k=1}^\infty\|A_k x\|^p

    On the divergence of series of the form \sum_{k=1}^\infty\|A_k x\|^p by Feshchenko, Ivan

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  10. 10
    On the closedness of the sum of n subspaces of a Hilbert space

    On the closedness of the sum of n subspaces of a Hilbert space by Feshchenko, Ivan

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  11. 11
    On representing and absolutely representing systems of subspaces in Banach spaces

    On representing and absolutely representing systems of subspaces in Banach spaces by Feshchenko, Ivan

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  12. 12
    On the closedness of the sum of ranges of operators \(A_k\) with almost compact products \(A_i^ A_j\)

    On the closedness of the sum of ranges of operators \(A_k\) with almost compact products \(A_i^ A_j\) by Feshchenko, Ivan S

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  13. 13
    On the essential spectrum of the sum of self-adjoint operators and the closedness of the sum of operator ranges

    On the essential spectrum of the sum of self-adjoint operators and the closedness of the sum of operator ranges by Feshchenko, Ivan S

    Published in arXiv.org
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  14. 14
    On absolutely representing families of subspaces in Banach spaces

    On absolutely representing families of subspaces in Banach spaces by Feshchenko, Ivan S

    Published in arXiv.org
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  15. 15
    On systems of subspaces of a Hilbert space such that every pair of subspaces satisfies one of the angle or commutativity condition

    On systems of subspaces of a Hilbert space such that every pair of subspaces satisfies one of the angle or commutativity condition by Feshchenko, Ivan, Strelets, Alexander

    Published in arXiv.org
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  16. 16
    Dissecting brick into bars

    Dissecting brick into bars by Feshchenko, Ivan, Radchenko, Danylo, Radzivilovsky, Lev, Tantsiura, Maksym

    Published in arXiv.org
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  17. 17
    Development of Ukrainian and Global Online Education

    Development of Ukrainian and Global Online Education by Kvitka, Sergiy, S. Yehorova, Valentyna, O. Chepulchenko, Tetiana, M. Taranenko, Mykola, S. Bakhov, Ivan, L. Feshchenko, Elena

    Published in TEM Journal
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  18. 18
    Global forest management data for 2015 at a 100 m resolution

    Global forest management data for 2015 at a 100 m resolution by Lesiv, Myroslava, Schepaschenko, Dmitry, Buchhorn, Marcel, See, Linda, Dürauer, Martina, Georgieva, Ivelina, Jung, Martin, Hofhansl, Florian, Schulze, Katharina, Bilous, Andrii, Blyshchyk, Volodymyr, Mukhortova, Liudmila, Brenes, Carlos Luis Muñoz, Krivobokov, Leonid, Ntie, Stephan, Tsogt, Khongor, Pietsch, Stephan Alexander, Tikhonova, Elena, Kim, Moonil, Di Fulvio, Fulvio, Su, Yuan-Fong, Zadorozhniuk, Roma, Sirbu, Flavius Sorin, Panging, Kripal, Bilous, Svitlana, Kovalevskii, Sergii B., Kraxner, Florian, Rabia, Ahmed Harb, Vasylyshyn, Roman, Ahmed, Rekib, Diachuk, Petro, Kovalevskyi, Serhii S., Bungnamei, Khangsembou, Bordoloi, Kusumbor, Churilov, Andrii, Vasylyshyn, Olesia, Sahariah, Dhrubajyoti, Tertyshnyi, Anatolii P., Saikia, Anup, Malek, Žiga, Singha, Kuleswar, Feshchenko, Roman, Prestele, Reinhard, Akhtar, Ibrar ul Hassan, Sharma, Kiran, Domashovets, Galyna, Spawn-Lee, Seth A., Blyshchyk, Oleksii, Slyva, Oleksandr, Ilkiv, Mariia, Melnyk, Oleksandr, Sliusarchuk, Vitalii, Karpuk, Anatolii, Terentiev, Andrii, Bilous, Valentin, Blyshchyk, Kateryna, Bilous, Maxim, Bogovyk, Nataliia, Blyshchyk, Ivan, Bartalev, Sergey, Yatskov, Mikhail, Smets, Bruno, Visconti, Piero, Mccallum, Ian, Obersteiner, Michael, Fritz, Steffen

    Published in Scientific data
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  19. 19
    Etiology and efficacy of anti-microbial treatment for community-acquired pneumonia in adults requiring hospital admission in Ukraine

    Etiology and efficacy of anti-microbial treatment for community-acquired pneumonia in adults requiring hospital admission in Ukraine by Kaidashev, Igor, Lavrenko, Anna, Baranovskaya, Tatiana, Blazhko, Victor, Digtiar, Nataliia, Dziublyk, Oleksandr, Gerasimenko, Nataliia, Iashyna, Liudmyla, Kryvetskyi, Volodymyr, Kuryk, Lesya, Rodionova, Victoria, Stets, Roman, Vyshnyvetskyy, Ivan, Feshchenko, Yurii

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  20. 20
    E-learning in the Evaluation of Students and Teachers: LMS or Social Networks?

    E-learning in the Evaluation of Students and Teachers: LMS or Social Networks? by Mozhaeva, Galina, Feshchenko, Artem, Kulikov, Ivan

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