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Necessary and insufficient conditions for well-posed Cauchy problems

✍ Scribed by Gilbert Strang


Publisher
Elsevier Science
Year
1966
Tongue
English
Weight
322 KB
Volume
2
Category
Article
ISSN
0022-0396

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Powerful Necessary Conditions for Class
✍ StΓ©phane Louboutin πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 610 KB

## Abstract We give a necessary condition for the ideal class group of a CM‐field to be of exponent at most two. This condition enables us to drastically reduce the amount of relative class number computation for determination of the CM ‐ fields of some types (e. g. the imaginary cyclic non ‐quadra