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  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Tame Representations of Local Weil Groups and of Chain Groups of Local Principal Orders

Tame Representations of Local Weil Groups and of Chain Groups of Local Principal Orders

Fröhlich, Albrecht

Paperback

General GardeningGeneral Mathematics

ISBN10: 3540173404
ISBN13: 9783540173403
Publisher: Springer
Published: Mar 13 1987
Pages: 100
Weight: 0.39
Height: 0.22 Width: 6.69 Depth: 9.61
Language: English
We begin by making clear the meaning of the term tame. The higher ramifi- cation groups, on the one hand, and the one-units of chain groups, on the other, are to lie in the kernels of the respective representations considered. We shall establish a very natural and very well behaved relationship between representa- tions of the two groups mentioned in the title, with all the right properties, and in particular functorial under base change and essentially preserving root numbers. All this will be done in full generality for all principal orders. The formal setup for this also throws new light on the nature of Gauss sums and in particular leads to a canonical closed formula for tame Galois Gauss sums. In many ways the tame and the wild theory have distinct features and distinct points of interest. The wild theory is much harder and - as far as it goes at present - technically rather complicated. On the tame side, once we have developed a number of new ideas, we get a complete comprehensive theory, from which technical difficulties have disappeared, and which has a naturality, and perhaps elegance, which seems rather rare in this gen, eral area. Among the principal new concepts we are introducing are those of similarity of represen- tations in both contexts and that of the Galois algebra of a principalorder., One might expect that this Galois algebra will, also be of importance in the wild situation.

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