現代数学の系譜工学物理雑談古典ガロア理論も読む46

[過去ﾛｸﾞ] 現代数学の系譜工学物理雑談古典ガロア理論も読む46 (692ﾚｽ)
上下前次 1-新
通常表示 512ﾊﾞｲﾄ分割ﾚｽ栞

このｽﾚｯﾄﾞは過去ﾛｸﾞ倉庫に格納されています｡
次ｽﾚ検索歴削→次ｽﾚ栞削→次ｽﾚ過去ﾛｸﾞﾒﾆｭｰ

398: 現代数学の系譜 雑談 古典ガロア理論も読む ◆e.a0E5TtKE  [sage] 2017/11/19(日) 20:45:33.01 ID:W1ZiI7BV

>>397 つづき
＜引用＞
http://www.unirioja.es/cu/jvarona/downloads/Differentiability-DA-Roth.pdf
DIFFERENTIABILITY OF A PATHOLOGICAL FUNCTION,
DIOPHANTINE APPROXIMATION,
AND A REFORMULATION
OF THE THUE-SIEGEL-ROTH THEOREM
JUAN LUIS VARONA
This paper has been published in Gazette of the Australian Mathematical Society, Vol-
ume 36, Number 5, November 2009, pp. 353{361.
Received 29 February 2008; accepted for publication 6 October 2009.
(抜粋)

ここに
fν(x)
＝0　if x ∈ R - Q（無理数）
＝1/q^ν  if x = p/q ∈ Q, irreducible （有理数で既約分数）
で

Theorem 1. For ν > 2, the function fν is discontinuous (and consequently not differentiable) at the rationals, and continuous at the irrationals.
With respect the differentiability, we have:
(a) For every irrational number x with bounded elements in its continued fraction expansion, fν is differentiable at x.
(b) There exist infinitely many irrational numbers x such that fν is not differentiable at x.
Moreover, the sets of numbers that fulfill (a) and (b) are both of them un-countable.
(引用終り)

http://rio2016.5ch.net/test/read.cgi/math/1510442940/398

上下前次 1-新書関写板覧索設栞歴

あと 294 ﾚｽあります
ｽﾚ情報赤ﾚｽ抽出画像ﾚｽ抽出歴の未読ｽﾚ

ぬこの手ぬこTOP 0.017s