If my poor Flatland friend retained the vigour of mind which he enjoyed when he began to compose these Memoirs, I should not now need to represent him in this preface, in which he desires, firstly, to return his thanks to his readers and critics in Spaceland, whose appreciation has, with unexpected celerity, required a second edition of his work; secondly, to apologize forcertain errors and misprints (for which, however, he is not entirely responsible); and, thirdly, to explain one or two misconceptions. But he is not the Square he once was. Years of imprisonment, and the still heavier burden of general incredulity and mockery, have combined with the natural decay of old age to erase from his mind many of the thoughts and notions, and much also of the terminology, which he acquired during his short stay in Spaceland. He has, therefore, requested me to reply in his behalf to two special objections, one of an intellectual, the other of a moral nature.
[英] 埃德温·A·艾勃特(1838—1926)
神学家,数学家,26岁就任伦敦城市学校的校长,成为英国首相的老师。
有个低等的等腰三角形,脑袋还不到四度,不仅偶尔涂成某个商人的颜色,然后抢劫他的商店,而且把自己涂成,或者让人把他涂成(因为这个故事说法不一)十二边形的12种颜色。他来到一个集市上,佯装他人的声音勾引了一位少女。这位少女是位出身于高贵的多边形家庭的孤儿,在这之...
评分最近我读了一本非常有趣的科幻小说,是埃德温·艾勃特的《平面国》,正如书名所提示的那样,它主要描绘了一个处在二维空间中的国家,在那里一切都是平面的,甚至连人也是一样。也许我们这些处在三维空间的人会觉得他们可怜,但他们本身却是自有一番乐趣。 平面国的居民...
评分很有滋味的小说,描述细致笔触幽默。 作者对二维世界不仅有出自逻辑与数学角度的构想(比如平面国的人如何认知这个世界,如何判断男女以及不同个体,如何通过明暗变化与线条长短的配合来判断来者边数等),更延伸到了意识形态、思想文化以及宗教信仰等层面(比如边数决定等级,...
评分焦建/文 上完中学的几何课程之后,除了对数学有兴趣的人,估计不会有太多人还对于平面和纬度产生兴趣。作为一种理解更加艰深知识的工具,这些概念被当做一种学习的跳板。我们都记得的公理是——点移动成线,线移动成面,面移动成体。立体图形成为学习的核心,除此之外,其他的...
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