ON SMOOTHNESS OF THE SOLUTION TO A NONLOCAL BOUNDARY VALUE PROBLEM OF PERIODIC TYPE FOR A FOURTH-ORDER MIXED-TYPE EQUATION OF THE SECOND KIND
 äàííîé ðàáîòå ñ èñïîëüçîâàíèåì ìîäèôèöèðîâàííîãî ìåòîäà Ãàëåðêèíà, ìå-
òîäîâ àïðèîðíûõ îöåíîê è “"-ðåãóëÿðèçàöèè” èññëåäóåòñÿ îäíîçíà÷íàÿ ðàçðå-
øèìîñòü è ãëàäêîñòü ðåãóëÿðíîãî îáîáùåííîãî ðåøåíèÿ íåëîêàëüíîé êðàåâîé
çàäà÷è ïåðèîäè÷åñêîãî òèïà äëÿ óðàâíåíèÿ ñìåøàííîãî òèïà âòîðîãî ðîäà ÷åò-
âåðòîãî ïîðÿäêà â ïðîñòðàíñòâàõ Ñîáîëåâà.
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