الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
this theist incudes a study multipoint bound problems for or canard differential One of the mostimportan1 : Lass of today revalued problems in vale it’s fie ds of sat emcee and techy are problems Lunch Lode nq the secants:=uer differential equation of he form Subject lit: erlirichcet, Ip.u:nann, pen.odic, sturmliouville crantlriuujc bondary conditio s (see should be continuous on a subset; la, blx RnxRn, is the ndirnens ional, ’.lIclidean space, The knd or bo~ndary conditions associated h the d.:.rfercntial equation (l) mentioned above are respcccively for aoir;e con st.ant, wher e 13arC! functions bounded on each courpac t subs exof In 1978, Granas, Jp.I11:he:- and t.ee pr c s ene.eca qe ne r a l ization o r the !nsteir. t.neorem using the ’topological transvl!J’sfl1ity t heo r m of Granashown t.ha t Bernstcin’s r e s a Lt.s of aqua t Ior; conbe cxt er.dcd to ct ne r ccunda rv cond i t Lor.s stated above. tor exalT,ple,: shown in theorems 4.1l ana (6.U in that if holds a nd in if there is a con starrt such that the equation has at loa s one sot uc Lon ncodiT.iono stated abcve The uniqueness o[ Lons , was a:so treated Junee toral conditions.