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 Jan17 asked Determining where a function is complex differentiable Dec19 comment Why probability measures in ergodic theory? The second question is addressed in this thread: mathoverflow.net/questions/31603/… Dec15 awarded Supporter Dec15 awarded Scholar Dec15 accepted Composition series of the ring R of 3x3 real matrices as an R-module and as a Real-Module Dec15 comment Composition series of the ring R of 3x3 real matrices as an R-module and as a Real-Module Yes. Where I went wrong was considering subrings at all, right? Because ideals in $R$ are $R$-modules and it makes sense to consider their factors. This is all we need. Dec15 revised Composition series of the ring R of 3x3 real matrices as an R-module and as a Real-Module added 435 characters in body Dec15 revised Composition series of the ring R of 3x3 real matrices as an R-module and as a Real-Module deleted 46 characters in body Dec15 awarded Editor Dec15 revised Composition series of the ring R of 3x3 real matrices as an R-module and as a Real-Module added 380 characters in body Dec15 asked Composition series of the ring R of 3x3 real matrices as an R-module and as a Real-Module Dec14 comment An example of an infinite non-abelian solvable group Thank you all. I'll look into these suggestions. Dec14 asked An example of an infinite non-abelian solvable group Dec9 asked The free group on 3 generators is isomorphic to a subgroup of the free group on 2 generators. Nov12 answered What probabilty density do I use with poisson processes? Oct26 awarded Student Oct26 comment If G is a group of order n=35, then it is cyclic I can't see what's wrong with it, but I have a hard time believing that so many people would overlook this proof it it were correct. Oct26 asked If G is a group of order n=35, then it is cyclic