Limit-point / limit-circle classification of second-order differential operators arising in PT
quantum mechanics
Keyword(s):
1971 ◽
Vol s2-4
(2)
◽
pp. 245-256
◽
1973 ◽
Vol 24
(1)
◽
pp. 423-425
◽
1973 ◽
Vol 24
(1)
◽
pp. 531-535
◽
Keyword(s):
1966 ◽
Vol s1-41
(1)
◽
pp. 531-534
◽
Keyword(s):
1975 ◽
Vol 72
(3)
◽
pp. 219-224
◽
Keyword(s):
1974 ◽
Vol s3-29
(1)
◽
pp. 142-158
◽
Keyword(s):
1972 ◽
Vol 23
(2)
◽
pp. 193-196
◽