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|Type:||Artigo de periódico|
|Title:||ON THE COHOMOLOGICAL CHARACTERIZATION OF REAL FREE PRO-2-GROUPS|
|Abstract:||The aim of this note is to give a cohomological characterization of the real free pro-2-groups. The real free pro-2-groups are the free pro-2-product of copies of Z/2Z with a free pro-2-group. They are characterized as the pro-2-groups G for which there exists a character chi(0), whose kernel is a free pro-2-g roup, such that chi(0) boolean OR chi = chi boolean OR chi, for every chi is an element of H-1(G). We discuss the naturalness of these conditions and we state some relations between them and field arithmetic properties.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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