On existence of tame Harrison map

Year, pages: 2007, 407 - 414

We present here two new criteria for existence of a tame Harrison map of two formally real algebraic function fields over a fixed real closed field of constants. The first criterion (c.f. Theorem \ref{tw_com->tame}) %2.5 shows that a square class group isomorphism is a tame Harrison map if it induces an isomorphism of the coproduct rings of residue Witt rings. The other result (c.f. Proposition \ref{uw_integral->tame}) %3.5 associates a tame Harrison map to an integral \QSEq{}.

Koprowski, P. 2007. On existence of tame Harrison map. In Mathematica Slovaca, vol. 57, no.5, pp. 407-414. 0139-9918.

Koprowski, P. (2007). On existence of tame Harrison map. Mathematica Slovaca, 57(5), 407-414. 0139-9918.