無限 | 数学の星 https://math-jp.net 数とはなにか、無限とはなにか Thu, 16 Feb 2023 11:41:04 +0000 ja hourly 1 https://wordpress.org/?v=6.9 https://math-jp.net/wp-content/uploads/2016/12/cropped-2015-06-06-18.34.04-1-2-32x32.jpg 無限 | 数学の星 https://math-jp.net 32 32 素数が無限にあることの新証明 https://math-jp.net/2017/02/25/new-proof-prime-infinite/ Sat, 25 Feb 2017 13:53:54 +0000 http://www.math-jp.net/?p=1392 ゼロでないけどゼロ https://math-jp.net/2017/01/28/not-zero-but-zero/ https://math-jp.net/2017/01/28/not-zero-but-zero/#respond Sat, 28 Jan 2017 00:22:26 +0000 http://www.math-jp.net/?p=178 https://math-jp.net/2017/01/28/not-zero-but-zero/feed/ 0 点を集めたら線になるか、線上で隣の点は存在するか https://math-jp.net/2017/01/08/gather-points-line-next-point/ https://math-jp.net/2017/01/08/gather-points-line-next-point/#comments Sun, 08 Jan 2017 02:02:46 +0000 http://www.math-jp.net/?p=327 https://math-jp.net/2017/01/08/gather-points-line-next-point/feed/ 1 チリが積もっても山にならない https://math-jp.net/2016/12/30/mountain-dust/ https://math-jp.net/2016/12/30/mountain-dust/#respond Fri, 30 Dec 2016 13:09:43 +0000 http://www.math-jp.net/?p=268 https://math-jp.net/2016/12/30/mountain-dust/feed/ 0 ゼロで割る、１/0=∞？ https://math-jp.net/2016/12/28/divide-by-zero/ https://math-jp.net/2016/12/28/divide-by-zero/#comments Tue, 27 Dec 2016 16:54:48 +0000 http://www.math-jp.net/?p=194 https://math-jp.net/2016/12/28/divide-by-zero/feed/ 2 0.999…=1について https://math-jp.net/2016/12/25/0point999eq1/ https://math-jp.net/2016/12/25/0point999eq1/#respond Sun, 25 Dec 2016 03:21:03 +0000 http://www.math-jp.net/?p=156 https://math-jp.net/2016/12/25/0point999eq1/feed/ 0 可能無限、実無限 https://math-jp.net/2016/12/22/possible-real-infinity/ https://math-jp.net/2016/12/22/possible-real-infinity/#respond Thu, 22 Dec 2016 00:21:03 +0000 http://www.math-jp.net/?p=89 https://math-jp.net/2016/12/22/possible-real-infinity/feed/ 0 x→0とx→∞における極限の意味の違い https://math-jp.net/2016/12/21/limit-value-convergence/ https://math-jp.net/2016/12/21/limit-value-convergence/#respond Wed, 21 Dec 2016 00:15:32 +0000 http://www.math-jp.net/?p=87 https://math-jp.net/2016/12/21/limit-value-convergence/feed/ 0 記号∞（無限大） https://math-jp.net/2016/12/20/symbol-infinity/ https://math-jp.net/2016/12/20/symbol-infinity/#respond Tue, 20 Dec 2016 00:15:02 +0000 http://www.math-jp.net/?p=85 https://math-jp.net/2016/12/20/symbol-infinity/feed/ 0 アキレスと亀 https://math-jp.net/2016/12/16/achilles-and-tortoise/ https://math-jp.net/2016/12/16/achilles-and-tortoise/#comments Thu, 15 Dec 2016 15:28:23 +0000 http://www.math-jp.net/?p=72 https://math-jp.net/2016/12/16/achilles-and-tortoise/feed/ 1