AbstractA boundary condition at ∞ is constructed which characterizes all selfadjoint extensions of the minimal closed operator associated with a Jacobi matrix of limit-circle type
International audienceWe consider symmetric second-order differential operators with real coefficien...
The self-adjoint and m-sectorial extensions of coercive Sturm–Liouville operators are characterised,...
AbstractIn this paper, self-adjoint extensions for second-order symmetric linear difference equation...
AbstractA boundary condition at ∞ is constructed which characterizes all selfadjoint extensions of t...
This paper investigates the minimal symmetric operator bounded from below and generated by the real...
summary:A space of boundary values is constructed for the minimal symmetric operator generated by an...
AbstractIt is shown that, when α < −1, the Laguerre operator ly = xy′' + (1 + α − x)y′ requires more...
AbstractUnder the assumption that the product l2 of the formally symmetric differential expression l...
AbstractWe show that for a positive linear operator acting in ℓ2 and defined fromanxn+1+bnxn+an-1xn-...
International audienceWe consider symmetric Jacobi operators with recurrence coefficients such that ...
A space of boundary values is constructed for minimal symmetric regular and singular q-Sturm– Liouv...
AbstractFor singular Hamiltonian systems in the limit point case, this paper characterizes the numbe...
AbstractThere are three basic types of self-adjoint regular and singular boundary conditions: separa...
AbstractEveritt and Markus characterized the domains of self-adjoint operator realizations of very g...
summary:In this paper we consider a linear operator on an unbounded interval associated with a matri...
International audienceWe consider symmetric second-order differential operators with real coefficien...
The self-adjoint and m-sectorial extensions of coercive Sturm–Liouville operators are characterised,...
AbstractIn this paper, self-adjoint extensions for second-order symmetric linear difference equation...
AbstractA boundary condition at ∞ is constructed which characterizes all selfadjoint extensions of t...
This paper investigates the minimal symmetric operator bounded from below and generated by the real...
summary:A space of boundary values is constructed for the minimal symmetric operator generated by an...
AbstractIt is shown that, when α < −1, the Laguerre operator ly = xy′' + (1 + α − x)y′ requires more...
AbstractUnder the assumption that the product l2 of the formally symmetric differential expression l...
AbstractWe show that for a positive linear operator acting in ℓ2 and defined fromanxn+1+bnxn+an-1xn-...
International audienceWe consider symmetric Jacobi operators with recurrence coefficients such that ...
A space of boundary values is constructed for minimal symmetric regular and singular q-Sturm– Liouv...
AbstractFor singular Hamiltonian systems in the limit point case, this paper characterizes the numbe...
AbstractThere are three basic types of self-adjoint regular and singular boundary conditions: separa...
AbstractEveritt and Markus characterized the domains of self-adjoint operator realizations of very g...
summary:In this paper we consider a linear operator on an unbounded interval associated with a matri...
International audienceWe consider symmetric second-order differential operators with real coefficien...
The self-adjoint and m-sectorial extensions of coercive Sturm–Liouville operators are characterised,...
AbstractIn this paper, self-adjoint extensions for second-order symmetric linear difference equation...
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