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| Titel: |
Witt vectors which are rational functions |
| Auteur: |
Bryden, J. Varadarajan, I. |
| Verschenen in: |
Communications in algebra |
| Paginering: | Jaargang 21 (1993) nr. 11 pagina's 4263-4270 |
| Jaar: |
1993 |
| Inhoud: |
One of the basic results proved by G. Almkvist asserts that K0 EndP(A) ≈K0(A) × A for any commutative ring A, where P(A) is the category of finitely generated projective modules over A and A0 is the subring of the ring 1 + tA[[t]] = W(A) of Witt Vectors over A constituted by those elements of 1 + tA [[t ]] which represent rational functions. In [3] Almkvist tries to give a more concrete discription of A0 in two specific cases, namely when A is any algebraically closed field or when A is the field [image omitted] of real numbers However the description [image omitted] given in [3] is erroneous. In the present note we will not only correct the error committed by Almkvist in (31 but also obtain a concrete description ofk0 for my field k. We will also study the special case when k is any real closed field. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 31 van 31 gevonden artikelen
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