국민대 조형대학 공예미술_금속조형

1998/04/27(18:33) from gumnuri.kookmin.ac.kr
작성자 : 금누리 (gumnuri@chollian.net)	조회수 : 908 , 줄수 : 5

회신: 병.클라인.병...과제...03

내려받기 : k1-cutaway.gif (15 Kbytes)

Illustration of cutaway and above-below crossing markings for the twist-spun trefoil, a surface embedded 4D that, surprisingly, is actually not knotted. (Frames from the video animation ``knot4,'' Indiana University.) ZLzlapTured DT