The Hopfian property for groups
asked Oct 31 '11 at 15:23
restriction of scalars, reference or suggestion for proof
asked Mar 14 '11 at 14:56
What made you choose your research field?
Give an example of a noncyclic Abelian group all of whose proper subgroups are cyclic.
Does $G\cong G/H$ imply that $H$ is trivial?
Is it good practice to let students consult their text materials during exams?
If $x^3 =x$ then $6x=0$ in a ring
Do you find your students are less competent in basic algebra and arithmetic, and, if so, do you believe that this is due to overuse of calculators at an early level?
If $b_n$ is a bounded sequence and $\lim a_n = 0$, show that $\lim(a_nb_n) = 0$
Rings in which every non-unit is a zero divisor
Why do people use “it is easy to prove”?
Problem books in higher mathematics