{"type":"rich","description":"\u5b9f\u30df\u30f3\u30b3\u30d5\u30b9\u30ad\u30fc\u7a7a\u9593\u306f\u3001\u5b9f\u6570\u306e\u9806\u5e8f\u56db\u3064\u7d44 (x0, x1, x2, x3) \u5168\u4f53\u304b\u3089\u306a\u308b\u56db\u6b21\u5143\u5ea7\u6a19\u7a7a\u9593 R4\u306b\u4e8c\u6b21\u5f62\u5f0f \u3092\u3042\u308f\u305b\u3066\u8003\u3048\u305f\u3082\u306e\u3067\u3042\u308b\u3002\u7279\u6b8a\u76f8\u5bfe\u8ad6\u306e\u7528\u8a9e\u3092\u501f\u308a\u308c\u3070\u3001Q > 0 \u3068\u306a\u308b\u70b9\u306f\u6642\u9593\u7684(timelike) \u3067\u3042\u308b\u3068\u8003\u3048\u3089\u308c\u3001\u3055\u3089\u306b x0 > 0 \u3068\u306a\u308b\u70b9\u306f\u672a\u6765\u65b9\u5411 (future-pointing) \u3067\u3042\u308b\u3068\u3044\u3046\u3002\u307e\u305f\u3001Q < 0 \u3068\u306a\u308b\u70b9\u306f\u7a7a\u9593\u7684 (spacelike)\u3067\u3042\u308b\u3068\u3044\u3046\u3002\u96f6\u9310 (null cone) S \u306f Q = 0 \u306a\u308b\u70b9\u5168\u4f53\u306e\u6210\u3059\u96c6\u5408\u3092\u3044\u3044\u3001\u672a\u6765\u65b9\u5411\u96f6\u9310 (future null cone) N+ \u306f\u96f6\u9310\u306e\u4e2d\u3067\u3082 x0 > 0 \u306a\u308b\u70b9\u5168\u4f53\u304b\u3089\u6210\u308b\u3002\u3057\u305f\u304c\u2026","version":"1.0","title":"\u96f6\u9310 (null cone) S \u306f Q = 0 \u306a\u308b\u70b9\u5168\u4f53\u306e\u6210\u3059\u96c6\u5408\u3092\u3044\u3044\u3001\u672a\u6765\u65b9\u5411\u96f6\u9310 (future null cone) N+ \u306f\u96f6\u9310\u306e\u4e2d\u3067\u3082 x0 > 0 \u306a\u308b\u70b9\u5168\u4f53\u304b\u3089\u6210\u308b\u3002","author_url":"https://blog.hatena.ne.jp/any119some1119/","categories":[],"width":"100%","provider_url":"https://hatena.blog","url":"https://any119some1119.hatenablog.com/entry/2018/08/11/131116","height":"190","published":"2018-08-11 13:11:16","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fany119some1119.hatenablog.com%2Fentry%2F2018%2F08%2F11%2F131116\" title=\"\u96f6\u9310 (null cone) S \u306f Q = 0 \u306a\u308b\u70b9\u5168\u4f53\u306e\u6210\u3059\u96c6\u5408\u3092\u3044\u3044\u3001\u672a\u6765\u65b9\u5411\u96f6\u9310 (future null cone) N+ \u306f\u96f6\u9310\u306e\u4e2d\u3067\u3082 x0 &gt; 0 \u306a\u308b\u70b9\u5168\u4f53\u304b\u3089\u6210\u308b\u3002 - \u4e80\u5c71\u5c1a\u8f1d\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"any119some1119","provider_name":"Hatena Blog","image_url":null,"blog_url":"https://any119some1119.hatenablog.com/","blog_title":"\u4e80\u5c71\u5c1a\u8f1d\u306e\u65e5\u8a18"}