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We study various families of Artin
-functions attached to geometric parametrizations of number fields. In each case we find the Sato–Tate measure of the family and determine the symmetry type of the distribution of the low-lying zeros.
This paper proves two results on the field of rationality
for an automorphic representation
, which is the subfield of
fixed under the subgroup of
stabilizing the isomorphism class of the finite part of
. For general linear groups and classical groups, our first main result is the finiteness of the set of discrete automorphic representations
is unramified away from a fixed finite set of places,
has a fixed infinitesimal character, and
is bounded. The second main result is that for classical groups,
grows to infinity in a family of automorphic representations in level aspect whose infinite components are discrete series in a fixed
-packet under mild conditions.
Let E/ℚ be an elliptic curve and let D<0 be a sufficiently large fundamental discriminant. If contains Heegner points of discriminant D, those points generate a subgroup of rank at least |D|δ, where δ>0 is an absolute constant. This result is compatible with the Birch and Swinnerton-Dyer conjecture.
Feasibility of 4H-SiC epitaxy on SiCOI substrates has been demonstrated, with high quality of obtained layers. Power Schottky diodes were designed and fabricated on these new structures, and exhibited very interesting electrical performance, particularly in reverse mode, with Vbr ∼ 1000 V. This technology is very promising for the realization of monolithic SiC power systems.
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