Second Leray spectral sequence of relative hypercohomology.
A second Leray spectral sequence of relative hypercohomology is constructed. (This is skew in generality to an earlier one constructed by S. Lubkin [(1968) Ann. Math. 87, 105-255].) The Mayer-Vietoris sequence of relative hypercohomology [Lubkin, S. (1968) Ann. Math. 87, 105-255] is also generalized.
Lubkin
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Department of Mathematics, The University of Rochester, Rochester, New York 14627.
Kato
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