首页
登录
职称英语
Marjorie Rice was an unlikely candidate for the role of mathematical innovat
Marjorie Rice was an unlikely candidate for the role of mathematical innovat
游客
2024-10-07
18
管理
问题
Marjorie Rice was an unlikely candidate for the role of mathematical innovator. She had no formal education in mathematics and save a single course required for graduation from high school in 1939. Nonetheless, in 1975 she took up a problem that professional mathematicians had twice left for dead, and showed how much life was in still.
The roblem was tessellation, or a rectangle — and fitting it together with copies of itself so that a plane is covered without any gaps or overlap. A region this plane would look rather like jigsaw puzzle whose pieces are all identical. Rice worked primarily with polygons, which consist only of straight lines. More specifically, she worked with convex polygons, in which the line joining any tow points on the polygon lies entirely within the polygon itself or on one of its edges. (A five-pointed star, for example, does not qualify as a convex polygon.)
By the time Rice took up tiling, its basic properties had been established. Obviously, any square can tile the plane, as many kitchen floors have demonstrated. Equilateral triangles are also a fairly clear-cut case. There is one other regular polygon (a polygon whose angles, and sides, are equal) that can tile the plane: hexagon. This fact was established by the ancient Greeks but had long before been exploited by honeybees in building their honeycombs.
And what of irregular polygons? As it turns out, any triangle or quadrilateral, no matter how devoid of regularity, will tile the plane. On the other hand, no convex polygon with more than six sides can do so, and the three classes of convex polygon that can were uncovered by the end of the First World War. So the only real question left by the time Marjorie Rice began her work was which convex pentagons tile the plane. [br] According to the passage, Marjorie Rice’s training in mathematics was_____.
选项
A、professional
B、unnecessary
C、delayed
D、limited
答案
D
解析
细节题。从第一段的第二句:“She had no formal education in mathematics and save a single courserequired for graduation from high school in 1939.”也就是说,她的数学知识很有限。
转载请注明原文地址:https://tihaiku.com/zcyy/3791543.html
相关试题推荐
Probabilityisthemathematicalstudyofthe______ofanevent’soccurrence.A、p
MarjorieRicewasanunlikelycandidatefortheroleofmathematicalinnovat
MarjorieRicewasanunlikelycandidatefortheroleofmathematicalinnovat
Asimilarapproachcanbe______toinnovation.A、usedB、appliedC、triedD、employe
Theonlycandidate______canhopetodefeathimfinallyquits.A、whoB、whichC、th
Inorderto______theidentityofacandidate,wemayaskyoutoshowyourID.A
Debatesamongcandidatesarerareinmostcountries.Buttheyhavebecomea
Debatesamongcandidatesarerareinmostcountries.Buttheyhavebecomea
Whatisthepossibi9reasonforthecandidatesfailtogetjobsattheBBC?[br]
Whatisthepossibi9reasonforthecandidatesfailtogetjobsattheBBC?[ori
随机试题
OneofthemostinterestingparadoxesinAmericatodayisthatHarvardUniv
UntilshespokeIhadn’trealizedshewasforeign.A、她说话了我才意识到她从国外来。B、直到她说话,我也不知
使用( )命令可以释放当前主机自动获取的IP地址。A.ipconfig/all
属于疏散外风的方剂不包括A.川芎茶调散 B.玉真散 C.牵正散 D.天麻钩
以下哪项不是脐膨出的病理特点A.部分腹腔脏器通过前腹壁正中的先天性皮肤缺损突入脐
以下关于股份公司设立说法正确的有( )A.采取发起设立方式设立的股份公司,在发
个案研究中常用的研究方法主要有()。 A.跟踪法 B.追因法 C.临床法
有补体参与的变态反应性疾病是A.支气管哮喘 B.青霉素引起的休克 C.粒细胞
在资格审查中,( )属于详细审查的因素。A.申请文件的格式 B.联合体是否具
施工项目的工程担保中,保证期限因保证内容和风险不同而各异。下列保证方式中,保证期
最新回复
(
0
)