{"image_url":null,"title":" A square is warped into a quarter-slice of a disk","author_name":"hanecci","blog_url":"https://hanecci.hatenadiary.org/","width":"100%","published":"2015-02-25 00:00:12","url":"https://hanecci.hatenadiary.org/entry/20150225/p13","type":"rich","categories":["MATH"],"blog_title":"OLD hanecci\u2019s blog : \u65e7 \u306f\u306d\u3063\u3061\u30d6\u30ed\u30b0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhanecci.hatenadiary.org%2Fentry%2F20150225%2Fp13\" title=\" A square is warped into a quarter-slice of a disk - OLD hanecci\u2019s blog : \u65e7 \u306f\u306d\u3063\u3061\u30d6\u30ed\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/hanecci/","description":"http://blog.matthen.com/post/111352099306/a-square-is-warped-into-a-quarter-slice-of-a-disk","provider_url":"https://hatena.blog","version":"1.0","height":"190"}