水土
发表于 2025-3-23 13:35:17
http://reply.papertrans.cn/23/2272/227135/227135_11.png
入伍仪式
发表于 2025-3-23 17:28:42
http://reply.papertrans.cn/23/2272/227135/227135_12.png
flimsy
发表于 2025-3-23 18:54:28
Catherine Meadows,Carl Landwehrert manifold is a manifold (i.e. an orbifold with empty singular set) that fibers over a 2-orbifold whose singular points form a discrete set (and have cyclic isotropy groups). The manifolds of tessellations are the spherical bundles of such 2-orbifolds.
sparse
发表于 2025-3-24 00:15:31
Tom Johnsten,Vijay Raghavan,Kevin HillX), are obtained from ST(X) by identifying the vectors (x, v) and (x, −v), for every (x, v) E ST(X). The S.-bundle PT(X), which is also called ., is a canonically oriented, closed 3-manifold and the natural map ST(X)→PT(X) is a 2-fold covering.
ACTIN
发表于 2025-3-24 04:06:12
http://reply.papertrans.cn/23/2272/227135/227135_15.png
minimal
发表于 2025-3-24 08:30:16
http://reply.papertrans.cn/23/2272/227135/227135_16.png
暂时休息
发表于 2025-3-24 11:21:15
http://reply.papertrans.cn/23/2272/227135/227135_17.png
Regurgitation
发表于 2025-3-24 15:44:57
http://reply.papertrans.cn/23/2272/227135/227135_18.png
ellagic-acid
发表于 2025-3-24 20:24:15
http://reply.papertrans.cn/23/2272/227135/227135_19.png
冥想后
发表于 2025-3-25 03:07:41
http://reply.papertrans.cn/23/2272/227135/227135_20.png