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I am a former assistant-professor of mathematics at the Univ. of Amsterdam, with specialization in group theory and representation theory of groups. I work for IBM, though not in research.


Jul
13
comment Quaternion Group as Permutation Group
Added some text to my answer.
Jul
13
revised Quaternion Group as Permutation Group
added 71 characters in body
Jul
13
answered Quaternion Group as Permutation Group
Jul
10
awarded  Enlightened
Jul
8
answered Conjugates and normalizer
Jul
8
answered Chinese Remainder Theorem problem error
Jul
8
comment Chinese Remainder Theorem problem error
Can you explain more about this technique you are referring to? Does it come from a book?
Jul
8
revised degree of commutativity
added 29 characters in body
Jul
8
comment Chinese Remainder Theorem problem error
$12x+5y=1\Rightarrow x=-2, y=1.$ should be $12x+5y=1\Rightarrow x=-2, y=5.$
Jul
8
revised I.N. Herstein, “Topics in algebra” group theory section 2.8 example 2.8.1
added 22 characters in body
Jul
8
answered I.N. Herstein, “Topics in algebra” group theory section 2.8 example 2.8.1
Jul
8
comment What do you get when you differentiate a $e^{f(x)}$-like function
Yes, then it would be a combination of the product and chain rule!
Jul
8
answered What do you get when you differentiate a $e^{f(x)}$-like function
Jul
8
answered Among any three consecutive positive integers one is a multiple of 3
Jul
8
answered I have issue in calculating log values
Jul
7
comment Reduce the expression $\sqrt{x+\sqrt{x+\sqrt{x+\sqrt{x+\cdots}}}}$ into a Geometric series
Yes, you are right Mark, on purpose I did not elaborate, awaiting a reaction from the OP.
Jul
7
answered Reduce the expression $\sqrt{x+\sqrt{x+\sqrt{x+\sqrt{x+\cdots}}}}$ into a Geometric series
Jul
7
answered groups generated by two elements of order 3
Jul
7
answered Proof of $ x (x+1) $ is an even number by contradiction proof method
Jul
6
comment The relation between orders in a group
Some care should be taken with infinite/ finiteness.