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Article #14009

Re: [Q];a problem of limit

#14009
From: Inoue-Koichi
Date: Sat, 13 Jan 1996 00:00
25 lines
1649 bytes
ใ„ใฎใ†ใˆใงใ™ใ€‚

In article <PC00137.96Jan12214224@srv.cc.hit-u.ac.jp> pc00137@srv.cc.hit-u.ac.jp (Inoue-Koichi) writes:
      ใŸใ ใ“ใฎๆ‰‹ใŒ้€š็”จใ™ใ‚‹ใฎใฏใ€ในใใซๅ‡บใฆใใ‚‹ๆ•ฐใŒใ™ในใฆ a ใจใ„ใ†ๅฎšๆ•ฐใ ใ‹ใ‚‰ใงใ€
	      a^(1/2)^(1/3)^...^(1/n)^...
      ใฎใ‚ˆใ†ใซ้€ๆฌกๅค‰ใ‚ใฃใฆใ„ใใจใ€ใ‚‚ใ†ใƒ€ใƒกใงใ™ใ€‚
      ใ“ใ‚ŒใฏๆผธๅŒ–ๅผใจใ—ใฆใ‚‚ๆ›ธใ‘ใชใ„ใ€ใคใพใ‚Š็ฌฌ n ้ …ใพใงใฎ่จˆ็ฎ—ใ‚’ใใ‚Œใžใ‚Œ
      ็‹ฌ็ซ‹ใซ่กŒใ†ใ‚ˆใ‚Šใชใ„ใจๆ€ใ†ใฎใงใ™ใŒใ€ไฝ•ใ‹ใ‚ˆใ„ๆ–น็ญ–ใŒใ‚ใ‚Šใพใ—ใŸใ‚‰
      ใŠๆ•™ใˆใใ ใ•ใ„๏ผˆๅฟตใฎใŸใ‚๏ผšๅˆฅใซใ“ใ‚Œใฎๆฅต้™ๅ€คใŒใปใ—ใ„ใ‚ใ‘ใงใฏใ‚ใ‚Šใพใ›ใ‚“๏ผ‰ใ€‚

   ใ†ใพใ„ๆ–นๆณ•ๆ€ใ„ใคใใพใ›ใ‚“ใ€‚ใ”ใ‚Šใ”ใ‚Š่ฉ•ไพกใ™ใ‚‹ใฎใ‹๏ผŸ

ใกใ‚‡ใฃใจ่€ƒใˆใŸใ‚“ใงใ™ใŒใ€
a(m,n)=(1/m)^(1/(m+1))^...^(1/(m+n))
ใจใ—ใฆใฟใ‚‹ใจใ€ๅคงๅฐ้–ขไฟ‚ใฏใ“ใ†ใชใฃใฆใพใ™ใ€‚
0<a(m,0)<a(m,2)<a(m,4)<...<a(m,5)<a(m,3)<a(m,1)<1
ใ ใ‹ใ‚‰ไธŠๆฅต้™ไธ‹ๆฅต้™ใ€ใคใพใ‚Šใ€
ฮฑ(m)=lim a(m,2k)
ฮฒ(m)=lim a(m,2k+1)
ใจใ™ใ‚‹ใจใ€ๅ•้กŒใฏใ“ใ‚Œใ‚‰ใฎๅ€คใŒใฉใ†ใชใ‚‹ใ‹ใจใ€ไธ€่‡ดใ™ใ‚‹ใ‹ใฉใ†ใ‹ใจใ„ใ†ใ“ใจใซ
ใชใ‚‹ใฎใงใ™ใญใ€‚
ฮฑ(m)=(1/m)^ฮฒ(m+1)
ฮฒ(m)=(1/m)^ฮฑ(m+1)
ใ‚‚ไฝฟใˆใ‚‹ใ ใ‚ใ†ใ‹ใ€ใ€ใ€ไบˆๆƒณใจใ—ใฆใฏใ€Œไธ€่‡ดใ™ใ‚‹ใ€ใจๆ€ใ„ใพใ™ใŒใ€ๅ€คใพใงใฏใกใ‚‡ใฃ
ใจใ€ใ€ใ€
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Message-ID: <PC00137.96Jan13134858@srv.cc.hit-u.ac.jp>
Path: arc1-ca.pugleaf.net!unknown!not-for-mail
References: <4b8ih2$obf@ayame.ipc.chiba-u.ac.jp>

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X-Google-Language: Japanese,JIS
X-Google-Thread: f4956,e29653388192c851
X-Google-Attributes: gidf4956,public
From: pc00137@srv.cc.hit-u.ac.jp (Inoue-Koichi)
Subject: Re: [Q];a problem of limit
Date: 1996/01/13
Message-ID: <PC00137.96Jan13134858@srv.cc.hit-u.ac.jp>
X-Deja-AN: 135044765
distribution: fj
references: <4b8ih2$obf@ayame.ipc.chiba-u.ac.jp>
content-type: text/plain; charset=ISO-2022-JP
organization: Hitotsubashi University, Tokyo, Japan
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newsgroups: fj.sci.math