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・ Hermus
・ Hermite constant
・ Hermite distribution
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・ Hermite number
・ Hermite polynomials
・ Hermite reciprocity
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・ Hermite spline
・ Hermite's cotangent identity
・ Hermite's identity
・ Hermite's problem
・ Hermite–Hadamard inequality
Hermite–Minkowski theorem
・ Hermitian adjoint
・ Hermitian connection
・ Hermitian function
・ Hermitian hat wavelet
・ Hermitian manifold
・ Hermitian matrix
・ Hermitian symmetric space
・ Hermitian variety
・ Hermitian wavelet
・ Hermits of Saint William
・ Hermits of St. John the Baptist
・ Hermits of the Most Blessed Virgin Mary of Mount Carmel
・ Hermitude
・ Hermival-les-Vaux


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Hermite–Minkowski theorem : ウィキペディア英語版
Hermite–Minkowski theorem
In mathematics, especially in algebraic number theory, the Hermite–Minkowski theorem states that for any integer ''N'' there are only finitely many number fields, i.e., finite field extensions ''K'' of the rational numbers Q, such that the discriminant of ''K''/Q is at most ''N''. The theorem is named after Charles Hermite and Hermann Minkowski.
This theorem is a consequence of the estimate for the discriminant
: \sqrt \geq \frac\left(\frac\pi4\right)^
where ''n'' is the degree of the field extension, together with Stirling's formula for ''n''!. This inequality also shows that the discriminant of any number field strictly bigger than Q is not ±1, which in turn implies that Q has no unramified extensions.
==References==
Section III.2

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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