Received: from tsbgw.wide.toshiba.co.jp (tsbgw.wide.toshiba.co.jp [202.249.10.123]) by shuttle.wide.toshiba.co.jp (8.9.1+3.1W/8.9.1) with ESMTP id UAA17554 for ; Sun, 16 Jul 2000 20:31:04 +0900 (JST) Received: from maltese.wide.toshiba.co.jp (maltese.wide.toshiba.co.jp [202.249.10.99]) by tsbgw.wide.toshiba.co.jp (8.9.3/8.9.1) with ESMTP id UAA27777 for ; Sun, 16 Jul 2000 20:46:04 +0900 (JST) Received: from isl.rdc.toshiba.co.jp (spiffy.isl.rdc.toshiba.co.jp [133.196.10.10]) by maltese.wide.toshiba.co.jp (8.9.1/8.9.1) with ESMTP id UAA23725 for ; Sun, 16 Jul 2000 20:46:03 +0900 (JST) Received: from maltese.wide.toshiba.co.jp ([202.249.10.99]) by isl.rdc.toshiba.co.jp (8.9.3/8.9.3/8.4) with ESMTP id UAA19058 for ; Sun, 16 Jul 2000 20:46:03 +0900 (JST) Received: from tsbgw.wide.toshiba.co.jp (tsbgw.wide.toshiba.co.jp [202.249.10.123]) by maltese.wide.toshiba.co.jp (8.9.1/8.9.1) with ESMTP id UAA23721 for ; Sun, 16 Jul 2000 20:46:03 +0900 (JST) Received: from orange.kame.net (orange.kame.net [203.178.141.194]) by tsbgw.wide.toshiba.co.jp (8.9.3/8.9.1) with ESMTP id UAA27772 for ; Sun, 16 Jul 2000 20:46:02 +0900 (JST) Received: from shuttle.wide.toshiba.co.jp (shuttle.wide.toshiba.co.jp [202.249.10.124]) by orange.kame.net (8.9.3+3.2W/3.7W/smtpfeed 1.06) with ESMTP id UAA68545 for ; Sun, 16 Jul 2000 20:46:00 +0900 (JST) Received: from localhost (shuttle.sixyards.wide.toshiba.co.jp [3ffe:501:100f:0:200:f8ff:fe01:61cf]) by shuttle.wide.toshiba.co.jp (8.9.1+3.1W/8.9.1) with ESMTP id UAA17550 for ; Sun, 16 Jul 2000 20:31:00 +0900 (JST) Date: Sun, 16 Jul 2000 20:41:56 +0900 Message-ID: From: JINMEI Tatuya / 神明達哉 To: core@kame.net Subject: [KQC] User-Agent: Wanderlust/2.3.0 (Roam) Emacs/20.6 Mule/4.0 (HANANOEN) Organization: Research & Development Center, Toshiba Corp., Kawasaki, Japan. MIME-Version: 1.0 (generated by SEMI 1.13.7 - "Awazu") Content-Type: text/plain; charset=ISO-2022-JP X-Dispatcher: imput version 980905(IM100) Lines: 11 X-UIDL: :ab!!OY#"!a-V!!jld"! オリジナルじゃなくてごめんなさいですが、昔聞いてその巧妙さに感動した問 題: 無理数の無理数乗で有理数になるものがあることを証明しなさい。 つまり、無理数x, yでx^yが有理数になるようなものがあることを示せ、と いうことです。 出展がなんだったか忘れてしまいましたが、その辺で大量に出版されてる本で はなかったはずなので、そんなにメジャーな問題ではないと思います。 神明 達哉