Timeline for automorphisms of local rings vs local change of coordinates
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Jan 12, 2015 at 6:48 | comment | added | Dmitry Kerner | Thank you! Still, I do not know any place where a "non-geometric" automorphism of $C^\infty$ is constructed. (i.e. an automorphism which is identity on all the polynomials but not identity on the flat functions). Could you suggest smth? | |
Jan 9, 2015 at 8:54 | history | answered | Peter Michor | CC BY-SA 3.0 |