Page 1 Next

Displaying 1 – 20 of 127

Showing per page

Ramification groups and Artin conductors of radical extensions of

Filippo Viviani (2004)

Journal de Théorie des Nombres de Bordeaux

We study the ramification properties of the extensions ( ζ m , a m ) / under the hypothesis that m is odd and if p m than either p v p ( a ) or p v p ( m ) v p ( a ) ( v p ( a ) and v p ( m ) are the exponents with which p divides a and m ). In particular we determine the higher ramification groups of the completed extensions and the Artin conductors of the characters of their Galois group. As an application, we give formulas for the p -adique valuation of the discriminant of the studied global extensions with m = p r .

Ramification in quartic cyclic number fields K generated by x 4 + p x 2 + p

Julio Pérez-Hernández, Mario Pineda-Ruelas (2021)

Mathematica Bohemica

If K is the splitting field of the polynomial f ( x ) = x 4 + p x 2 + p and p is a rational prime of the form 4 + n 2 , we give appropriate generators of K to obtain the explicit factorization of the ideal q 𝒪 K , where q is a positive rational prime. For this, we calculate the index of these generators and integral basis of certain prime ideals.

Ramifications minimales

Georges Gras (2000)

Journal de théorie des nombres de Bordeaux

Nous appliquons à la notion d’extension (cyclique de degré p ) à ramification minimale, les techniques de “ réflexion ” qui permettent une caractérisation très simple de ces extensions à l’aide d’un corps gouvernant.

Currently displaying 1 – 20 of 127

Page 1 Next