On the problem of boundedness of a signed measure on projections of a von Neumann algebra mapping ηMn → C a signed measure on M if η is totally orthoadditive, that is, η(∑
i ε{lunate} IPi) = ε{lunate}
i On the problem of boundedness of a signed measure on projections of a von Neumann algebra mapping ηMn → C a signed measure on M if η is totally orthoadditive, that is, η(∑
i ε{lunate} IPi) = ε{lunate}
i