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Feb
20
comment Character table does not determine group Vs Tannaka duality
The Lambda ring structure is enough to show that R(D_4) is different from R(Q) via Adams operations built from the Lambda ring structure.
Feb
18
comment Math Annotate Platform?
There is no server at publish.mathsource.org. Could you post a correction? Thanks!
Feb
6
comment Ring with three binary operations
They might be interested in Hopf algebras (e.g., group objects in the category of coalgebras) and also Hopf rings (e.g., ring objects in the category of coalgebras).
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Nov
25
revised What are the best known results for the stable homotopy groups of spheres?
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Nov
25
answered What are the best known results for the stable homotopy groups of spheres?
Jul
31
answered What are your favorite instructional counterexamples?
Jun
14
answered What is convolution intuitively?