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Summary: We show that a non-negative Hamiltonian operator whose domain contains a maximal uniformly positive subspace is bounded.
Linear symmetric and selfadjoint operators (unbounded), Linear operators on spaces with an indefinite metric, Spaces with indefinite inner product (Kreĭn spaces, Pontryagin spaces, etc.), maximal uniform positive subspace, non-negative Hamiltonian operator, Linear accretive operators, dissipative operators, etc.
Linear symmetric and selfadjoint operators (unbounded), Linear operators on spaces with an indefinite metric, Spaces with indefinite inner product (Kreĭn spaces, Pontryagin spaces, etc.), maximal uniform positive subspace, non-negative Hamiltonian operator, Linear accretive operators, dissipative operators, etc.
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 16 | |
popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |