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Oct
19
answered Representations of the two dimensional non-abelian Lie algebra
Oct
18
reviewed Approve suggested edit on derived-category tag wiki excerpt
Oct
17
reviewed Approve suggested edit on Estimating the number of clusters
Oct
14
awarded  Nice Answer
Oct
14
comment What did Rolle prove when he proved Rolle's theorem?
[Rolle 1691] is online here: gallica.bnf.fr/ark:/12148/bpt6k58202643
Oct
6
comment The construction of the 257gon
See Richelot (1832) 1 2 3 4 and Hermes !
Oct
3
reviewed Approve suggested edit on Growth in families of trees
Oct
3
reviewed Approve suggested edit on Simple functions on a product measure space
Oct
3
comment Why a nilpotent Lie group must be a matrix group?
Yes, a variation due to Garrett Birkhoff, Lie groups simply isomorphic with no linear group (1936).
Oct
3
comment Why a nilpotent Lie group must be a matrix group?
Simply connected nilpotent Lie groups are linear; $\begin{pmatrix}1&\mathbf R&\mathbf R\\0&1&\mathbf R\\0&0&1\end{pmatrix}/\begin{pmatrix}1&0&\mathbf Z\\0&1&0\\0&0&1\end{pmatrix}$ isn't. See Ado's theorem.
Oct
2
reviewed Approve suggested edit on How many maximal triangulations of a rectangle?
Sep
30
awarded  Explainer
Sep
28
comment Maximal subgroups of indefinite special orthogonal group SO(p,q)
I'm afraid Mušic's paper hasn't been translated. OTOH, you should be able to find translations of Dynkin's, in "Selected papers of E. B. Dynkin with commentary".
Sep
26
reviewed Approve suggested edit on lattices tag wiki
Sep
26
reviewed Approve suggested edit on lattices tag wiki excerpt
Sep
22
awarded  Good Answer
Sep
22
revised Did Leibniz really get the Leibniz rule wrong?
added 518 characters in body
Sep
21
awarded  Enlightened
Sep
21
awarded  Nice Answer
Sep
21
revised Did Leibniz really get the Leibniz rule wrong?
deleted 2 characters in body