The main problems I like to "work/play/learn" with are Iteration of recursive definitions, hyperoperations, set theory and infinite cardinals, partial order theory, category theory, quandles and conjugation.
Empty set (Italy)
Member for 8 years, 1 month
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Last seen Feb 18 at 13:09
Top network posts
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- 8 What are $\Sigma _n^i$, $\Pi _n^i$ and $\Delta _n^i$?
- 7 Why infinite cardinalities are not "dense"?
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