<HTML> <HEAD> <TITLE>Visnyk of V.N.Karazin Kharkiv National University. Ser. Mathematics, Applied Mathematics and Mechanics - vol 83 (2016) (UKR)</TITLE> <meta http-equiv="Content-Type" content="text/html; charset=windows-1251" /> </HEAD> <body background="vest1.jpg"> <center> <!-- <hr /> <h3><font color= "#FF0000"> / : ><5@0 AB>@i=>: B0 ?>A;i4>2=iABL AB0B59 <>65 1CB8 7<i=5=0 !</font></h3> <hr /> --> <h3><a href="index.htm">VA=8: %0@:V2AL:>3> =0FV>=0;L=>3> C=V25@A8B5BC V<5=V . . 0@07V=0</a></h3> <h3>!5@VO MaBe<aB8:a, ?@8:;a4=a <aBe<aB8:a i <5E0=i:0</h3> <font color= "#FF0000"><b>V;L=89 4>ABC? 4> ?>2=8E B5:ABV2 2AVE AB0B59 </b></font> &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; <b>ISSN</b> 2523-4641 (Online), <b>ISSN</b> 2221-5646 (Print) <h2><a href="currentv.htm"><VAB V 0=>B0FVW</a></h2> <h2>">< 83, 2016 <!-- <font color="#FF0000">- In PRESS !</font> --> </h2> <H3>&O AB>@V=:0 <A HREF="vol83-2016.htm">=3;V9A:>N</A> / This page <A HREF="vol83-2016.htm"> in English</A></H3><p> </center> <UL> <li><b>5AL B><</b> &nbsp; <a href= "Vestnik-KhNU-83-2016_merged.pdf" target="_blank">[ (PDF) ]</a> </li> <LI> "8BC; &nbsp; <A HREF="Vestnik-KhNU-83-2016-title.pdf"> [ (PDF) ] </A> <LI> 540:FV9=0 :>;53VO, <I> !. 2.</I> &nbsp; <A HREF="Vestnik-KhNU-83-2016-p2-editorial.pdf"> [ (PDF) ] </A> <LI> <VAB, <I> !. 3.</I> &nbsp; <A HREF="Vestnik-KhNU-83-2016-cont.pdf"> [ (PDF) ] </A> <P> <LI> <b> 045FL .., 020@7V=0 ..,</b> ;0AB8G=VABL >48=8G=>W :C;V ?@>AB>@C $\ell_1$, <I> C. 4-9. </I> <A HREF="#kadets-83-2016"> [ A=>B0FVO ] </A> &nbsp; <A HREF="Vestnik-KhNU-83-2016-kadets.pdf"> [ >2=89 B5:AB (PDF) ] </A> </LI> <P> <LI> <b>'C9:> !..,</b> @> @53C;O@870FVN ;V=V9=8E <0B@8G=8E @V2=O=L, <I> C. 10-20. </I> <A HREF="#chuj-83-2016"> [ A=>B0FVO ] </A> &nbsp; <A HREF="Vestnik-KhNU-83-2016-chuj.pdf"> [ >2=89 B5:AB (PDF) ] </A> </LI> <P> <LI> <b>3=0B>28G !. ..,</b> /2=89 @>72'O7>: 7040GV H284:>4VW 4;O >4=>W =5;V=V9=>W B@828<V@=>W A8AB5<8,<I> C. 21-46. </I> <A HREF="#ign-83-2016"> [ A=>B0FVO ] </A> &nbsp; <A HREF="Vestnik-KhNU-83-2016-ign.pdf"> [ >2=89 B5:AB (PDF) ] </A> </LI> <P> <LI> <b>0:0@>2 ..,</b> 5@>20=VABL 52>;NFV9=>3> 48D5@5=FV0;L=>3> @V2=O==O 2 G0AB8==8E ?>EV4=8E, <I> C. 47-56. </I> <A HREF="#mak-83-2016"> [ A=>B0FVO ] </A> &nbsp; <A HREF="Vestnik-KhNU-83-2016-mak.pdf"> [ >2=89 B5:AB (PDF) ] </A> </LI> <P> <LI> <b>'CTH>2 3>@ <8B@>28G (=5:@>;>3).</b> <I> C. 57-59. </I> &nbsp; <A HREF="Vestnik-KhNU-83-2016-chueshov.pdf"> [ >2=89 B5:AB (PDF) ] </A> </LI> <P> <LI> <b>C1>289 >;>48<8@ 8@8;;>28G.</b> > AV<45AOB8@VGGO 7 4=O =0@>465==O. <I> C. 60-61. </I> &nbsp; <A HREF="Vestnik-KhNU-83-2016-dub.pdf"> [ >2=89 B5:AB (PDF) ] </A> </LI> <P> <P> </UL> <BR> <HR> <A NAME="kadets-83-2016"> <b> 045FL .., 020@7V=0 ..,</b> ;0AB8G=VABL >48=8G=>W :C;V ?@>AB>@C $\ell_1$, <I> C. 4-9. </I> <A><P> # =5I>402=V9 AB0BBV 0A:0;5A0, 045FO, @VC5;8 B0 V=3;5@0 ?>:070=>, I> C 1C4L-O:><C AB@>3> >?C:;><C 10=0E>2><C ?@>AB>@V $X$ :>6=0 =5@>7BO3CNG0 1VT:FVO $F: B_X \to B_X$ T V7><5B@VTN. 8 @>7?>2AN46CT<> >B@8<0=89 @57C;LB0B =0 ?@>ABV@ $\ell_1$, O:89 =5 T AB@>3> >?C:;8<. <P> <I>;NG>2V A;>20:</I> =5@>7BO3CNG5 2V4>1@065==O; >48=8G=0 :C;O; ?;0AB8G=89 ?@>ABV@. <P> 2000 Mathematics Subject Classification: 46B20. &nbsp; <A HREF="Vestnik-KhNU-83-2016-kadets.pdf"> [ >2=89 B5:AB (PDF) ] </A> &nbsp; <A HREF="vol83-2016ukr.htm"> 3>@C</A>. <P> <HR> <A NAME="chuj-83-2016"><b>'C9:> !..,</b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athematics Subject Classification: 15A24, 3415, 34C25. &nbsp; <A HREF="Vestnik-KhNU-83-2016-chuj.pdf"> [ >2=89 B5:AB (PDF) ] </A> &nbsp; <A HREF="vol83-2016ukr.htm"> 3>@C</A>. <P> <HR> <A NAME="ign-83-2016"><b>3=0B>28G !. ..,</b> /2=89 @>72'O7>: 7040GV H284:>4VW 4;O >4=>W =5;V=V9=>W B@828<V@=>W A8AB5<8,<I> C. 21-46. </I> <A><P> >73;O40TBLAO 7040G0 H284:>4VW 4;O A8AB5<8 $\dot x_1=u$, $\dot x_2=x_1$, $\dot x_3=x_1^3$. 0NBLAO O2=V D>@<C;8 4;O 7=0E>465==O >?B8<0;L=8E :5@C20=L. B@8<0=> O2=89 @>72'O7>: 7040GV >?B8<0;L=>3> A8=B57C. <P> <I>;NG>2V A;>20:</I> =5;V=V9=V :5@>20=V A8AB5<8, H284:>4VO, O2=89 @>72'O7>:. <P> 2000 Mathematics Subject Classification: 93C10, 49K30. &nbsp; <A HREF="Vestnik-KhNU-83-2016-ign.pdf"> [ >2=89 B5:AB (PDF) ] </A> &nbsp; <A HREF="vol83-2016ukr.htm"> 3>@C</A>. <P> <HR> <A NAME="mak-83-2016"> <b>0:0@>2 ..,</b> 5@>20=VABL 52>;NFV9=>3> 48D5@5=FV0;L=>3> @V2=O==O 2 G0AB8==8E ?>EV4=8E <I> C. 47-56. </I> <A><P> >2545=0 $0$-:5@>20=VABL 1C4L-O:>3> 52>;NFV9=>3> 48D5@5=FV0;L=>3> @V2=O==O 2 G0AB8==8E ?>EV4=8E 7V AB0;8<8 :>5DVFVT=B0<8 2 ?@>AB>@V =5A:V=G5==> 48D5@5=FV9>2=8E H284:> A?040NG8E DC=:FV9. 02545=> C<>28, 70 O:8<8 :5@C20==O =5 70;568BL 2V4 G0AC. >73;O=CB> B0:>6 @5;59=V :5@C20==O 4;O :;0A8G=8E @V2=O=L <0B5<0B8G=>W DV78:8. <P> <I>;NG>2V A;>20:</I> 0-:5@>20=VABL, :@09>20 7040G0, ?5@5B2>@5==O $C@'T, @5;59=5 :5@C20==O. <P> 2000 Mathematics Subject Classification: 35S10. &nbsp; <A HREF="Vestnik-KhNU-83-2016-mak.pdf"> [ >2=89 B5:AB (PDF) ] </A> &nbsp; <A HREF="vol83-2016ukr.htm"> 3>@C</A>. <P> <HR> <A NAME="chueshov-83-2016"> <b>'CTH>2 3>@ <8B@>28G (=5:@>;>3).</b> <I> C. 57-59. </I> <A><P> &nbsp; &nbsp; &nbsp; &nbsp; <A HREF="Vestnik-KhNU-83-2016-chueshov.pdf"> [ >2=89 B5:AB (PDF) ] </A> &nbsp; <A HREF="vol83-2016ukr.htm"> 3>@C</A>. <P> <HR> <A NAME="dub-83-2016"> <b>C1>289 >;>48<8@ 8@8;;>28G.</b> > AV<45AOB8@VGGO 7 4=O =0@>465==O. <I> C. 60-61. </I> <A><P> &nbsp; <A HREF="Vestnik-KhNU-83-2016-dub.pdf"> [ >2=89 B5:AB (PDF) ] </A> &nbsp; <A HREF="vol83-2016ukr.htm"> 3>@C</A>. <P> <P> </UL> <BR> <HR> <!--LiveInternet counter--><script type="text/javascript"><!-- document.write("<a href='http://www.liveinternet.ru/click' "+ "target=_blank><img src='//counter.yadro.ru/hit?t53.6;r"+ escape(document.referrer)+((typeof(screen)=="undefined")?"": ";s"+screen.width+"*"+screen.height+"*"+(screen.colorDepth? screen.colorDepth:screen.pixelDepth))+";u"+escape(document.URL)+ ";"+Math.random()+ "' alt='' title='LiveInternet: ?>:070=> G8A;> ?@>A<>B@>2 8"+ " ?>A5B8B5;59 70 24 G0A0' "+ "border='0' width='88' height='31'><\/a>") //--></script><!--/LiveInternet--> ; &nbsp; Different visitors (<b>IP</b>s) since May 2, 2015: <a href="http://info.flagcounter.com/xD6u"><img src="http://s06.flagcounter.com/count/xD6u/bg_FBFF87/txt_2F239E/border_CCCCCC/columns_8/maxflags_16/viewers_Visitors+IPs/labels_0/pageviews_0/flags_0/" alt="Free counters!" border="0"></a> </BODY> </html>