Authors construct obstructions to surjectivity of Johnson homomorphisms on basis-conjugating automorphism groups of free groups, determine the cokernels through degree four, and affirmatively resolve the Andreadakis problem in degree four.
Darn´ e; On the Andreadakis problem for subgroups of IA n, Int.l Math
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
fields
math.AT 1years
2024 1verdicts
UNVERDICTED 1representative citing papers
citing papers explorer
-
On the structures of the Johnson cokernels of the basis-conjugating automorphism groups of free groups
Authors construct obstructions to surjectivity of Johnson homomorphisms on basis-conjugating automorphism groups of free groups, determine the cokernels through degree four, and affirmatively resolve the Andreadakis problem in degree four.