THE LEGENDRE TYPE OPERATOR IN A LEFT DEFINITE HILBERT SPACE

Abstract

The techniques for discussing linear differential operators in left definite spaces, developed earlier for regular fourth order and singular second order operators, are applied the Legendre type operator. It is shown that the operator, with its domain merely restricted to the new space, remains self-adjoint and has the same spectrum, inverse and spectral resolution (an eigenfunction expansion) as the original L ² operator.

1980 Mathematics Subject Classification (1985 Revision):

• 34B25