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Jan
30
awarded  Favorite Question
Nov
5
awarded  Popular Question
Oct
28
reviewed Looks OK Show $A_n$ has no subgroups of index 2
Oct
22
revised Weighting dataset by one of its fields
rolled back to a previous revision
Oct
20
awarded  Nice Answer
Oct
9
awarded  Popular Question
Aug
21
reviewed Looks OK What is the difference between 1) given any , 2 ) for every 3) for all in definitions?
Aug
21
reviewed Looks OK How does probabilities cope with determinist systems?
Aug
17
comment Convert $(-1.0, 1.0)$ to degrees
N.B. In programming, most languages are equipped with a function called atan2, which avoids the divide-by-zero error you might identify above. (Oh, I see now another answer has covered that.)
Aug
17
reviewed Close Group homomorphism between the integers and the reals.
Aug
17
reviewed Looks OK Does the sum of reciprocals of primes congruent to $1 \mod{4}$ diverge?
Aug
1
awarded  Enlightened
Aug
1
awarded  Nice Answer
Jul
22
awarded  Enlightened
Jul
22
awarded  Nice Answer
Jul
2
reviewed No Action Needed All right angles are equal to each other
Jul
2
comment How to scale a 2D vector and keep direction
You may always comment on your own questions, regardless of reputation.
Jun
30
comment Why the Householder matrix is orthogonal?
N.B. -- It's "Householder matrix", named after Alston Scott Householder
Jun
29
awarded  Good Answer
Jun
24
reviewed Leave Closed How do you avoid getting rusty at applied math after univeristy