Reference health
Means of positive linear operators
7/7 checkable references clean · checked 2026-08-11
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.
5 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
The 7 checked references that resolve
resolves10.1016/0022-247X(76)90090-1
Characterizations of operations derived from network connections
resolves10.1016/0034-4877(75)90061-0
Functional calculus for sesquilinear forms and the purification map
The 5 references without a DOI — listed, not checked
no DOI — not checkedAnderson, W.N., Jr., Schreiber, M.: The infimum of two projections. Acta Sci. Math.33, 165?168 (1972)
no DOI — not checkedAndo, T.: Topics on operator inequalities, Lecture Note, Sapporo, 1978
no DOI — not checkedDunford, N., Schwartz, J.T.: Linear operators I. New York, London: Wiley 1963
no DOI — not checkedFujii, J.I.: Arithmetico-geometric mean of operators. Math. Japon.6, 667?669 (1979)
no DOI — not checkedFujii, J.I.: On geometric and harmonic means of operators. Math. Japon. (to appear)
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or importance of the work itself, and nothing about references deposited without a DOI.
checked 2026-08-11 — re-checked daily as this page is visited; titles and statuses come from Crossref and DataCite and are not part of the signed record
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