LEADER 01294nam a2200349 i 4500
001 991000807479707536
005 20020507173835.0
008 970312s1977    de            ||| | eng  
020   $a3540085238
035   $ab10759979-39ule_inst
035   $aLE01302627$9ExL
040   $aDip.to Matematica$beng
082 0 $a515.352
084   $aAMS 34B20
100 1 $aKauffman, Robert M.$0438332
245 14$aThe deficiency index problem for powers of ordinary differential expressions /$cRobert Kauffman, Thomas T. Read, Anton Zettl
260   $aBerlin :$bSpringer-Verlag,$c1977
300   $avi, 112 p. ;$c25 cm.
490 0 $aLecture notes in mathematics,$x0075-8434 ;$v621
500   $aBibliography: p. [98]-110.
500   $aIncludes index
650  0$aBoundary value problems
650  0$aDifferential operators
650  0$aWeyl theory
700 1 $aRead, Thomas Thornton
700 1 $aZettl, Anton
907   $a.b10759979$b23-02-17$c28-06-02
912   $a991000807479707536
945   $aLE013 34B KAU11 (1977)$g1$i2013000079004$lle013$o-$pE0.00$q-$rl$s-  $t0$u0$v0$w0$x0$y.i10855099$z28-06-02
996   $aDeficiency index problem for powers of ordinary differential expressions$9262838
997   $aUNISALENTO
998   $ale013$b01-01-97$cm$da  $e-$feng$gde $h4$i1