中国纪念碑
发表于 2025-4-1 02:06:29
Pure braid groups are not residually free,We show that the Artin pure braid group .. is not residually free for . ≥ 4. Our results also show that the corank of .. is equal to 2 for . ≥ 3.
confide
发表于 2025-4-1 06:37:49
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obnoxious
发表于 2025-4-1 13:26:46
Cohomology of the complement to an elliptic arrangement,We consider the complement to an arrangement of hyperplanes in a cartesian power of an elliptic curve and describe its cohomology with coefficients in a nontrivial rank one local system.