摘要

Let F be a real number field with r(1) real embeddings. In this paper, we prove that the sequence
K-2i(F){2}-> circle plus(p noncomplex) (H) over cap (0)(F-p;Q(2)/Z(2)(i))-> H-0(F;Q(2)/Z(2)(i)) -> 0
is a complex, where (H) over cap (0)(F-p;Q(2)/Z(2)(i)) are the Tate cohomology groups. Moreover if i equivalent to 0, 1, or 2 (mod 4), then it is exact; if i equivalent to 3 (mod 4), then the homology group at the second term of this complex is isomorphic to circle plus(r1)Z/2Z.

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